Studer D-424 Service manual

Studer D424

2-Channel Magneto-Optical Disk Recorder,
SW Version 1.6

1. General

2. Operating Elements

3. Quick Start Guide

4. Operation

5. Troubleshooting

6. Circuit Description/Jumper Setting – D424

7. Circuit Description/Jumper Setting – Desktop Controller

8. Diagrams

9. Appendix

Operating and Service Instructions

Prepared and edited by Copyright by Studer Pr ofessional Audio AG
Studer Professional Audio AG Printed in Switzerland
Technical Documentation Order no. 10.27.3811 (Ed. 0202)
Althardstrasse 30
CH-8105 Regensdorf – Switzerland
http://www.studer.ch Subject to change

Studer is a regi stered trade mar k of Studer Professional Audio AG, Regensdorf

SAFETY / SECURITE / SICHERHEIT

To reduce the risk of electric shock, do not remove covers (or back). No
user-serviceable parts inside. Refer servicing to qualified service per­sonnel.

Afin de prévenir un choc électrique, ne pas enlever les couvercles (où
l’arrière) de l’appareil. Il ne se trouve à l’intérieur aucune pièce pouvant
être réparée par l’usager.

Um die Gefahr eines elektrischen Schlages zu vermeiden, entfernen Sie
weder Geräteabdeckungen noch Rückwand. Überlassen Sie Wartung
und Reparatur qualifiziertem Fachpersonal.

This symbol is intended to alert the user to presence of uninsulated
“dangerous voltage” within the apparatus that may be of sufficient
magnitude to constitute a risk of electric shock to a person.

Ce symbole indique à l'utilisateur qu'il existent à l'intérieur de l'appareil
des “tensions dangereuses”. Ces tensions élevées ont pour consé­quence un risque de choc électrique en cas de contact.

Dieses Symbol deutet dem Anwender an, dass im Geräteinnern die Ge­fahr der Berührung von “ gefährlicher Spannung” besteht. Die Höhe
der Spannung kann zu einem elektrischen Schlag führen.

CAUTION: Lithium battery. Danger of explosion by incorrect handling. Replace by

ATTENTION: Pile au lithium. Danger d'explosion en cas de manipulation incorrecte.

ACHTUNG: Explosionsgefahr bei unsachgemässem Auswechseln der Lithium-

ADVARSEL: Lithiumbatterei. Eksplosinsfare. Udskinftning ma kun foretages af en

CLASS 1

LED PRODUCT

CLASS 1

LASER PRODUCT

This symbol is intended to alert the user to the presence of important
instructions for operating and maintenance in the enclosed documenta-

tion.
Ce symbole indique à l’utilisateur que la documentation jointe contient

d'importantes instructions concernant le fonctionnement et la mainte­nance.

Dieses Symbol deutet dem Anwender an, dass die beigelegte Doku­mentation wichtige Hinweise für Betrieb und Wartung enthält.

battery of the same make and type only.

Ne remplacer que par un modèle de même type.

batterie. Nur durch den selben Typ ersetzen.

sagkyndig of som beskrevet i servicemanualen (DK).

Assemblies or sub-assemblies of this product can contain optoelectronic
devices. As long as these devices comply with Class 1 of laser or LED
product according to EN 60825-1:1994, they will not be expressly
marked on the product. If a special design should be covered by a
higher class of this standard, the device concerned will be marked di­rectly on the assembly or sub-assembly in accordance with the above
standard.

Baugruppen oder Unterbaugruppen dieses Produktes können opto­elektronische Komponenten enthalten. Solange diese der Klasse 1 für
Laser- oder LED-Produkte nach der Norm EN 60825-1:1994 entspre­chen, sind sie nicht direkt am Gerät bezeichnet. Sollte eine Sonderaus­führung in eine höhere Klasse fallen, so ist die betreffende Baugruppe
oder Unterbaugruppe gemäss dieser Norm mit entsprechender Auf­schrift versehen.

I

SAFETY / SECURITE / SICHERHEIT

FIRST AID

(in case of electric shock)

1. Separate the person as quickly as
possible from the electric power
source:

• by switching off the equipment

• or by unplugging or disconnecting
the mains cable

• pushing the person away from the
power source by using dry insu­lating material (such as wood or
plastic).

• After having sustained an electric

shock, always consult a doctor.

WARNING!

DO NOT TOUCH THE PERSON
OR HIS CLOTHING BEFORE THE
POWER IS TURNED OFF, OTHER­WISE YOU STAND THE RISK OF
SUSTAINING AN ELECTRIC
SHOCK AS WELL!

PREMIERS SECOURS

(en cas d'électrocution)

1. Si la personne est dans l'impos­sibilité de se libérer:

• Couper l'interrupteur principal

• Couper le courant

• Repousser la personne de l'appareil
à l'aide d'un objet en matière non
conductrice (matière plastique ou
bois)

• Après une électrocution, toujours

consulter un médecin.

ATTENTION!

NE JAMAIS TOUCHER UNE PER­SONNE QUI EST SOUS TENSION,
SOUS PEINE DE SUBIR EGALE­MENT UNE ELECTROCUTION.

ERSTE HILFE

(bei Stromunfällen)

1. Bei einem Stromunfall die be­troffene Person so rasch wie mög­lich vom Strom trennen:

• Ausschalten des Gerätes

• Ziehen oder Unterbrechen der
Netzzuleitung

• Betroffene Person mit isoliertem
Material (Holz, Kunststoff) von
der Gefahrenquelle wegstossen

• Nach einem Stromunfall sollte

immer ein Arzt aufgesucht werden.

ACHTUNG!

EINE UNTER SPANNUNG STE­HENDE PERSON DARF NICHT
BERÜHRT WERDEN. SIE KÖN­NEN DABEI SELBST ELEKTRI­SIERT WERDEN!

2. If the person is unconscious:

• check the pulse,

• reanimate the person if respiration
is poor,

• lay the body down, turn it to one
side, call for a doctor immediately.

2. En cas de perte de connaissance de
la personne électrocutée:

• Contrôler le pouls

• Si nécessaire, pratiquer la respi­ration artificielle

• Placer l'accidenté sur le flanc et
consulter un médecin.

2. Bei Bewusstlosigkeit des Verun­fallten:

• Puls kontrollieren,

• bei ausgesetzter Atmung künstlich
beatmen,

• Seitenlagerung des Verunfallten
vornehmen und Arzt verständigen.

II

SICHERHEIT / SAFETY

Installation

Vor der Installation des Gerätes müssen die hier aufgeführ­ten und auch die weiter in dieser Anleitung mit
bezeichneten Hinweise gelesen und während der Instal­lation und des Betriebes beachtet werden.
Untersuchen Sie das Gerät und sein Zubehör auf allfällige
Transportschäden.
Ein Gerät, das mechanische Beschädigung aufweist oder in
welches Flüssigkeit oder Gegenstände eingedrungen sind,
darf nicht ans Netz angeschlossen oder muss sofort durch
Ziehen des Netzsteckers vom Netz getrennt werden. Das
Öffnen und Instandsetzen des Gerätes darf nur von Fachper­sonal unter Einhaltung der geltenden Vorschriften durchge­führt werden.

Liegt dem Gerät kein konfektioniertes Netzkabel bei, so
muss dieses durch eine Fachperson unter Verwendung der
mitgelieferten Kabel-Gerätedose IEC320/C13 oder
IEC320/C19 und unter Berücksichtigung der einschlägigen,
im jeweiligen Lande geltenden Bestimmungen angefertigt
werden; siehe unten.
Vor Anschluss des Netzkabels an die Netzsteckdose muss
überprüft werden, ob die Stromversorgungs- und An­schlusswerte des Gerätes (Netzspannung, Netzfrequenz)
innerhalb der erlaubten Toleranzen liegen. Die im Gerät
eingesetzten Sicherungen müssen den am Gerät angebrach­ten Angaben entsprechen.
Ein Gerät mit einem dreipoligen Gerätestecker (Gerät der
Schutzklasse I) muss an eine dreipolige Netzsteckdose ange­schlossen und somit das Gerätegehäuse mit dem Schutzleiter
der Netzinstallation verbunden werden (Für Dänemark gel­ten Starkstrombestimmungen, Abschnitt 107).

Installation

Before you install the equipment, please read and adhere to
the following recommendations and all sections of these
instructions marked with .

Check the equipment for any transport damage.

A unit that is mechanically damaged or which has been
penetrated by liquids or foreign objects must not be con­nected to the AC power outlet or must be immediately dis­connected by unplugging the power cable. Repairs must only
be performed by trained personnel in accordance with the
applicable regulations.

Should the equipment be delivered without a matching mains
cable, the latter has to be prepared by a trained person using
the attached female plug (IEC320/C13 or IEC320/C19) with
respect to the applicable regulations in your country - see
diagram below.

Before connecting the equipment to the AC power outlet,
check that the local line voltage matches the equipment
rating (voltage, frequency) within the admissible tolerance.
The equipment fuses must be rated in accordance with the
specifications on the equipment.

Equipment supplied with a 3-pole appliance inlet (equipment
conforming to protection class I) must be connected to a 3­pole AC power outlet so that the equipment cabinet is con­nected to the protective earth conductor of the AC supply
(for Denmark the Heavy Current Regulations, Section 107,
are applicable).

Female plug (IEC320), view from contact side:

L live; brown National American Standard: Black
N neutral; blue White
PE protective earth; green and yellow green

Connecteur femelle (IEC320), vue de la face aux contacts:

L phase; brun Standard national américain: Noir
N neutre; bleu Blanc
PE terre protectrice; vert et jaune Vert

Ansicht auf Steckkontakte der Kabel-Gerätesteckdose (IEC320):

L Phase; braun USA-Standard: Schwarz
N Nulleiter; blau Weiss
PE Schutzleiter; gelb/grün grün

III

SICHERHEIT / SAFETY

Zugentlastung für den Netzanschluss

Zum Verankern von Steckverbindungen ohne mechanische
Verriegelung (z.B. IEC-Kaltgerätedosen) empfehlen wir die
folgende Anordnung:

Mains connector strain relief

For anchoring connectors without a mechanical lock (e.g.
IEC mains connectors), we recommend the following ar­rangement:

Vorgehen: Der mitgelieferte Kabelhalter ist selbstklebend.
Bitte beachten Sie bei der Montage die folgenden Regeln:

1. Der Untergrund muss sauber, trocken und frei von Fett,
Öl und anderen Verunreinigungen sein. Temperaturbe­reich für optimale Verklebung: 20...40° C.

2. Entfernen Sie die Schutzfolie auf der Rückseite des Ka­belhalters und bringen sie ihn mit kräftigem Druck an der
gewünschten Stelle an. Lassen sie ihn unbelastet so lange
wie möglich ruhen – die maximale Klebekraft ist erst
nach rund 24 Stunden erreicht.

3. Die Stabilität des Kabelhalters wird erhöht, wenn Sie ihn
zusätzlich verschrauben. Zu diesem Zweck liegen ihm
eine selbstschneidende Schraube sowie eine M4­Schraube mit Mutter bei.

4. Legen Sie das Kabel gemäss Figur in den Halter ein und
pressen Sie die Klemme kräftig auf, bis das Kabel fixiert
ist.

Procedure: The cable clamp shipped with your unit is auto­adhesive. If mounting, please follow the rules below:

1. The surface to be adhered to must be clean, dry, and free
from grease, oil or other contaminants. Best application
temperature range is 20...40° C.

2. Remove the plastic protective backing from the rear side
of the clamp and apply it firmly to the surface at the de­sired position. Allow as much time as possible for curing.
The bond continues to develop for as long as 24 hours.

3. For improved stability, the clamp can be fixed with a
screw. For this purpose, a self-tapping screw and an M4
bolt and nut are included.

4. Place the cable into the clamp as shown in the illustration
above and firmly press down the internal top cover until
the cable is fixed.

IV

UMGEBUNGSBEDINGUNGEN / AMBIENT CONDITIONS

Lufttemperatur und Feuchtigkeit

Allgemein

Die Betriebstauglichkeit des Gerätes oder Systems ist unter
folgenden Umgebungsbedingungen gewährleistet:

EN 60721-3-3, Set IE32, Wert 3K3.

Diese Norm besteht aus einem umfassenden Katalog von Pa­rametern; die wichtigsten davon sind: Umgebungstemperatur
+5...+40 °C; rel. Luftfeuchtigkeit 5...85% – d.h. weder Kon­densation noch Eisbildung; abs. Luftfeuchtigkeit 1...25 g/m³;
Temperatur-Änderungsrate < 0,5 °C/min. In den folgenden
Abschnitten wird darauf näher eingegangen.
Unter den genannten Bedingungen startet und arbeitet das
Gerät oder System problemlos. Ausserhalb dieser Spezifikatio­nen möglicherweise auftretende Probleme sind in den folgen­den Abschnitten beschrieben.

Umgebungstemperatur

Geräte und Systeme von Studer sind allgemein für einen Um­gebungs-Temperaturbereich (d.h. Temperatur der eintretenden
Kühlluft) von +5...+40 °C ausgelegt. Bei Installation in einem
Schrank muss der vorgesehene Luftdurchsatz und dadurch die
Konvektionskühlung gewährleistet sein. Folgende Tatsachen
sind dabei zu berücksichtigen:

1. Die zulässige Umgebungstemperatur für den Betrieb der
Halbleiter-Bauelemente beträgt 0 °C bis +70 °C (commercial
temperature range for operation).

2. Der Luftdurchsatz der Anlage muss gewährleisten, dass die
austretende Kühlluft ständig kühler ist als 70 °C.

3. Die mittlere Erwärmung der Kühlluft soll 20 K betragen,
die maximale Erwärmung an den heissen Komponenten darf
somit um weitere 10 K höher liegen.

4. Zum Abführen einer Verlustleistung von 1 kW bei dieser
zulässigen mittleren Erwärmung ist eine Luftmenge von
2,65 m³/min notwendig.
Beispiel: Für ein Rack mit einer Leistungsaufnahme P = 800 W
ist eine Kühlluftmenge von 0,8 * 2,65 m³/min nötig, entspre-
chend 2,12 m³/min.

5. Soll die Kühlfunktion der Anlage (z.B. auch bei Lüfter­Ausfall oder Bestrahlung durch Spotlampen) überwacht wer­den, so ist die Temperatur der Abluft unmittelbar oberhalb der
Einschübe an mehreren Stellen im Rack zu messen; die An­sprechtemperatur der Sensoren soll 65 bis 70 °C betragen.

Air temperature and humidity

General

Normal operation of the unit or system is warranted under the
following ambient conditions defined by:

EN 60721-3-3, set IE32, value 3K3.

This standard consists of an extensive catalogue of parameters,
the most important of which are: ambient temperature +5...
+40° C, relative humidity 5...85% – i.e. no formation of con­densation or ice; absolute humidity 1...25 g/m³; rate of tem­perature change < 0,5 °C/min. These parameters are dealt with
in the following paragraphs.
Under these conditions the unit or system starts and works
without any problem. Beyond these specifications, possible
problems are described in the following sections.

Ambient temperature

Units and systems by Studer are generally designed for an
ambient temperature range (i.e. temperature of the incoming
air) of +5...+40 °C. When rack mounting the units, the intended
air flow and herewith adequate cooling must be provided. The
following facts must be considered:

1. The admissible ambient temperature range for operation of
the semiconductor components is 0 °C to +70 °C (commercial
temperature range for operation).

2. The air flow through the installation must provide that the
outgoing air is always cooler than 70 °C.

3. Average heat increase of the cooling air shall be 20 K,
allowing for an additional maximum 10 K increase at the hot
components.

4. In order to dissipate 1 kW with this admissible average heat
increase, an air flow of 2,65 m³/min is required.

Example: A rack dissipating P = 800 W requires an air flow of
0,8 * 2,65 m³/min which corresponds to 2,12 m³/min.

5. If the cooling function of the installation must be moni­tored (e.g. for fan failure or illumination with spot lamps), the
outgoing air temperature must be measured directly above the
modules at several places within the rack. The trigger tempera­ture of the sensors should be 65 to 70 °C.

Reif und Tau

Das unversiegelte System (Steckerpartien, Halbleiteranschlüs­se) verträgt zwar leichte Eisbildung (Reif). Mit blossem Auge
sichtbare Betauung führt jedoch bereits zu Funktionsstörungen.
In der Praxis kann mit einem zuverlässigen Betrieb der Geräte
bereits im Temperaturbereich ab –15 °C gerechnet werden,
wenn für die Inbetriebnahme des kalten Systems die folgende
allgemeine Regel beachtet wird:
Wird die Luft im System abgekühlt, so steigt ihre relative
Feuchtigkeit an. Erreicht diese 100%, kommt es zu Nieder­schlag, meist in der Grenzschicht zwischen der Luft und einer
kühleren Oberfläche, und somit zur Bildung von Eis oder Tau
an empfindlichen Systemstellen (Kontakte, IC-Anschlüsse etc.).
Ein störungsfreier Betrieb mit interner Betauung, unabhängig
von der Temperatur, ist nicht gewährleistet.

Frost and dew

The unsealed system parts (connector areas and semiconductor
pins) allow for a minute formation of ice or frost. However,
formation of dew visible with the naked eye will already lead to
malfunctions. In practice, reliable operation can be expected in
a temperature range above –15 °C, if the following general rule
is considered for putting the cold system into operation:

If the air within the system is cooled down, the relative humid­ity rises. If it reaches 100%, condensation will arise, usually in
the boundary layer between the air and a cooler surface, to­gether with formation of ice or dew at sensitive areas of the
system (contacts, IC pins, etc.). Once internal condensation
occurs, trouble-free operation cannot be guaranteed, independ­ent of temperature.

V

UMGEBUNGSBEDINGUNGEN / AMBIENT CONDITIONS

Vor der Inbetriebnahme muss das System auf allfällige interne
Betauung oder Eisbildung überprüft werden. Nur bei sehr
leichter Eisbildung kann mit direkter Verdunstung (Sublimati­on) gerechnet werden; andernfalls muss das System im abge­schalteten Zustand gewärmt und getrocknet werden.
Das System ohne feststellbare interne Eisbildung oder Betau­ung soll möglichst homogen (und somit langsam) mit eigener
Wärmeleistung aufgewärmt werden; die Lufttemperatur der
Umgebung soll ständig etwas tiefer als diejenige der Syste­mabluft sein.
Ist es unumgänglich, das abgekühlte System sofort in warmer
Umgebungsluft zu betreiben, so muss diese entfeuchtet sein.
Die absolute Luftfeuchtigkeit muss dabei so tief sein, dass die
relative Feuchtigkeit, bezogen auf die kälteste Oberfläche im
System, immer unterhalb 100% bleibt.
Es ist dafür zu sorgen, dass beim Abschalten des Systems die
eingeschlossene Luft möglichst trocken ist (d.h. vor dem Ab­schalten im Winter den Raum mit kalter, trockener Luft belüf­ten und feuchte Gegenstände, z.B. Kleider, entfernen).
Die Zusammenhänge sind im folgenden Klimatogramm er­sichtlich. Zum kontrollierten Verfahren gehören Thermometer
und Hygrometer sowie ein Thermometer im System.
Beispiel 1: Ein Ü-Wagen mit einer Innentemperatur von 20 °C
und 40% relativer Luftfeuchtigkeit wird am Abend abgeschal­tet. Sinkt die Temperatur unter +5 °C, bildet sich Tau oder Eis.
Beispiel 2: Ein Ü-Wagen wird morgens mit 20 °C warmer Luft
von 40% relativer Luftfeuchtigkeit aufgewärmt. Auf Teilen, die
kälter als +5 °C sind, bildet sich Tau oder Eis.

Before putting into operation, the system must be checked for
internal formation of condensation or ice. Only with a minute
formation of ice, direct evaporation (sublimation) may be ex­pected; otherwise the system must be heated and dried while
switched off.
A system without visible internal formation of ice or condensa­tion should be heated up with its own heat dissipation, as ho­mogeneously (and subsequently as slow) as possible; the ambi­ent temperature should then always be lower than the outgoing
air.
If it is absolutely necessary to operate the system immediately
within warm ambient air, this air must be dehydrated. In such a
case, the absolute humidity must be so low that the relative
humidity, related to the coldest system surface, always remains
below 100%.
Ensure that the enclosed air is as dry as possible when power­ing off (i.e. before switching off in winter, aerate the room with
cold, dry air, and remove humid objects as clothes from the
room).
These relationships are visible from the following climatogram.
For a controlled procedure, thermometer and hygrometer as
well as a thermometer within the system will be required.
Example 1: An OB-van having an internal temperature of
20 °C and rel. humidity of 40% is switched off in the evening.
If temperature falls below +5 °C, dew or ice will be forming.
Example 2: An OB-van is heated up in the morning with air of
20 °C and a rel. humidity of 40%. On all parts being cooler
than +5 °C, dew or ice will be forming.

VI

WARTUNG / MAINTENANCE

Wartung und Reparatur

Durch Entfernen von Gehäuseteilen, Abschirmungen etc.
werden stromführende Teile freigelegt. Deshalb müssen u.a.
die folgenden Grundsätze beachtet werden:
Eingriffe in das Gerät dürfen nur von Fachpersonal unter
Einhaltung der geltenden Vorschriften vorgenommen wer­den.
Vor Entfernen von Gehäuseteilen muss das Gerät ausge­schaltet und vom Netz getrennt werden.

Bei geöffnetem, vom Netz getrenntem Gerät dürfen Teile
mit gefährlichen Ladungen (z. B. Kondensatoren, Bildröh­ren) erst nach kontrollierter Entladung, heisse Bauteile (Lei­stungshalbleiter, Kühlkörper etc.) erst nach deren Abkühlen
berührt werden.

Bei Wartungsarbeiten am geöffneten, unter Netzspannung
stehenden Gerät dürfen blanke Schaltungsteile und metallene
Halbleitergehäuse weder direkt noch mit nichtisoliertem
Werkzeug berührt werden.

Zusätzliche Gefahren bestehen bei unsachgemässer Handha­bung besonderer Komponenten:

• Explosionsgefahr bei Lithiumzellen, Elektrolyt-Konden­satoren und Leistungshalbleitern

• Implosionsgefahr bei evakuierten Anzeigeeinheiten

• Strahlungsgefahr bei Lasereinheiten (nichtionisierend),
Bildröhren (ionisierend)

• Verätzungsgefahr bei Anzeigeeinheiten (LCD) und Kom­ponenten mit flüssigem Elektrolyt.

Solche Komponenten dürfen nur von ausgebildetem Fach­personal mit den vorgeschriebenen Schutzmitteln (u.a.
Schutzbrille, Handschuhe) gehandhabt werden.

Maintenance and Repair

The removal of housing parts, shields, etc. exposes ener­gized parts. For this reason the following precautions should
be observed:
Maintenance should only be performed by trained personnel
in accordance with the applicable regulations.

The equipment should be switched off and disconnected
from the AC power outlet before any housing parts are re­moved.
Even if the equipment is disconnected from the power, parts
with hazardous charges (e.g. capacitors, picture tubes) must
not be touched until they have been properly discharged.
Touch hot components (power semiconductors, heat sinks,
etc.) only when cooled off.

If maintenance is performed on a unit that is opened and
switched on, no uninsulated circuit components and metallic
semiconductor housings must be touched neither with your
bare hands nor with uninsulated tools.

Certain components pose additional hazards:

• Explosion hazard from lithium batteries, electrolytic
capacitors and power semiconductors

• Implosion hazard from evacuated display units

• Radiation hazard from laser units (non-ionizing), picture
tubes (ionizing)

• Caustic effect of display units (LCD) and such compo­nents containing liquid electrolyte.

Such components should only be handled by trained per­sonnel who are properly protected (e.g. safety goggles,
gloves).

VII

WARTUNG / MAINTENANCE

Elektrostatische Entladung (ESD)
bei Wartung und Reparatur

ATTENTION:

ATTENTION:

ACHTUNG:

Viele ICs und andere Halbleiter sind empfindlich gegen
elektrostatische Entladung (ESD). Unsachgemässe Behand­lung von Baugruppen mit solchen Komponenten bei War­tung und Reparatur kann deren Lebensdauer drastisch ver­mindern.
Bei der Handhabung der ESD-empfindlichen Komponenten
sind u.a. folgende Regeln zu beachten:

• ESD-empfindliche Komponenten dürfen ausschliesslich
in dafür bestimmten und bezeichneten Verpackungen ge­lagert und transportiert werden.

• Unverpackte, ESD-empfindliche Komponenten dürfen
nur in dafür eingerichteten Schutzzonen (EPA, z.B. Ge­biet für Feldservice, Reparatur- oder Serviceplatz) ge­handhabt und nur von Personen berührt werden, die durch
ein Handgelenkband mit Serienwiderstand mit dem Mas­sepotential des Reparatur- oder Serviceplatzes verbunden
sind. Das gewartete Gerät wie auch Werkzeug, Hilfsmit­tel, EPA-taugliche (elektrisch halbleitende) Arbeits-, Ab­lage- und Bodenmatten müssen ebenfalls mit diesem Po­tential verbunden sein.

• Die Anschlüsse der ESD-empfindlichen Komponenten
dürfen unkontrolliert weder mit elektrostatisch aufladba­ren (Gefahr von Spannungsdurchschlag), noch mit metal­lischen Oberflächen (Schockentladungsgefahr) in Berüh­rung kommen.

• Um undefinierte transiente Beanspruchung der Kompo­nenten und deren eventuelle Beschädigung durch un­erlaubte Spannung oder Ausgleichsströme zu vermeiden,
dürfen elektrische Verbindungen nur am abgeschalteten
Gerät und nach dem Abbau allfälliger Kondensator­ladungen hergestellt oder getrennt werden.

Electrostatic Discharge (ESD)
during Maintenance and Repair

Observe precautions for handling devices sensitive to elec­trostatic discharge!

Respecter les précautions d’usage concernant la mani­pulation de composants sensibles à l’électricité statique!

Vorsichtsmassnahmen bei der Handhabung von ESD­empfindlichen Bauelementen beachten!

Many ICs and semiconductors are sensitive to electrostatic
discharge (ESD). The life of components containing such
elements can be drastically reduced by improper handling
during maintenance and repair work.

Please observe the following rules when handling ESD sen­sitive components:

• ESD sensitive components should only be stored and
transported in the packing material specifically provided
for this purpose.

• Unpacked ESD sensitive components should only be
handled in ESD protected areas (EPA, e.g. area for field
service, repair or service bench) and only be touched by
persons who wear a wristlet that is connected to the
ground potential of the repair or service bench by a series
resistor. The equipment to be repaired or serviced and all
tools, aids, as well as electrically semi-conducting work,
storage and floor mats should also be connected to this
ground potential.

• The terminals of ESD sensitive components must not
come in uncontrolled contact with electrostatically
chargeable (voltage puncture) or metallic surfaces (dis­charge shock hazard).

• To prevent undefined transient stress of the components
and possible damage due to inadmissible voltages or
compensation currents, electrical connections should only
be established or separated when the equipment is
switched off and after any capacitor charges have de­cayed.

VIII

WARTUNG / MAINTENANCE

SMD-Bauelemente

Der Austausch von SMD-Bauelementen ist ausschliesslich
geübten Fachleuten vorbehalten. Für verwüstete Platinen
können keine Ersatzansprüche geltend gemacht werden.
Beispiele für korrekte und falsche SMD-Lötverbindungen in
der Abbildung weiter unten.

Bei Studer werden keine handelsüblichen SMD-Bauteile
bewirtschaftet. Für Reparaturen sind die notwendigen Bau­teile lokal zu beschaffen. Die Spezifikationen von Spezialb­auteilen finden Sie in der Serviceanleitung.

SMD Components

SMD components should only be replaced by skilled spe­cialists. No warranty claims will be accepted for circuit
boards that have been ruined. Proper and improper SMD
soldering joints are depicted below.

Studer does not keep any commercially available SMD
components in stock. For repair the corresponding devices
should be purchased locally. The specifications of special
components can be found in the service manual.

IX

EMV / EMC

Störstrahlung und Störfestigkeit

Das Gerät entspricht den Schutzanforderungen auf dem
Gebiet elektromagnetischer Phänomene, wie u.a. in den
Richtlinien 89/336/EWG und FCC, Part 15, aufgeführt:

1. Vom Gerät erzeugte elektromagnetische Strahlung ist
soweit begrenzt, dass bestimmungsgemässer Betrieb an­derer Geräte und Systeme möglich ist.

2. Das Gerät weist eine angemessene Festigkeit gegen elek­tromagnetische Störungen auf, so dass sein bestimmungs­gemässer Betrieb möglich ist.

Das Gerät wurde getestet und erfüllt die Bedingungen der im
Kapitel „ Technische Daten“ aufgeführten EMV-Normen.
Die Limiten dieser Standards gewährleisten mit angemesse­ner Wahrscheinlichkeit sowohl den Schutz der Umgebung
wie auch entsprechende Störfestigkeit des Gerätes. Absolute
Garantie, dass keine unerlaubte elektromagnetische Beein­trächtigung während des Betriebes entsteht, ist jedoch nicht
gegeben.
Um die Wahrscheinlichkeit solcher Beeinträchtigung weit­gehend auszuschliessen, sind u.a. folgende Massnahmen zu
beachten:

• Installieren Sie das Gerät gemäss den Angaben in der Be­triebsanleitung, und verwenden Sie das mitgelieferte Zu­behör.

• Verwenden Sie im System und in der Umgebung, in de­nen das Gerät eingesetzt ist, nur Komponenten (Anlagen,
Geräte), die ihrerseits die Anforderungen der obener­wähnten Standards erfüllen.

• Sehen Sie ein Erdungskonzept des Systems vor, das so­wohl die Sicherheitsanforderungen (die Erdung der Ge­räte gemäss Schutzklasse I mit einem Schutzleiter muss
gewährleistet sein), wie auch die EMV-Belange berück­sichtigt. Bei der Entscheidung zwischen stern- oder flä­chenförmiger bzw. kombinierter Erdung sind Vor- und
Nachteile gegeneinander abzuwägen.

• Benutzen Sie abgeschirmte Kabel, wo vorgesehen. Ach­ten Sie auf einwandfreie, grossflächige, korrosions­beständige Verbindung der Abschirmung zum entspre­chenden Steckeranschluss und dessen Gehäuse. Beachten
Sie, dass eine nur an einem Ende angeschlossene Ka­belabschirmung als Sende- bzw. Empfangsantenne wirken
kann (z.B. bei wirksamer Kabellänge von 5 m oberhalb
von 10 MHz), und dass die Flanken digitaler Kommuni­kationssignale hochfrequente Aussendungen verursachen
(z.B. LS- oder HC-Logik bis 30 MHz).

• Vermeiden Sie Bildung von Masseschleifen oder ver­mindern Sie deren unerwünschte Auswirkung, indem Sie
deren Fläche möglichst klein halten und den darin flie­ssenden Strom durch Einfügen einer Impedanz (z.B.
Gleichtaktdrossel) reduzieren.

Electromagnetic Compatibility

The equipment conforms to the protection requirements
relevant to electromagnetic phenomena that are listed in the
guidelines 89/336/EC and FCC, part 15.

1. The electromagnetic interference generated by the equip­ment is limited in such a way that other equipment and
systems can be operated normally.

2. The equipment is adequately protected against electro­magnetic interference so that it can operate correctly.

The unit has been tested and conforms to the EMC standards
applicable to residential, commercial and light industry, as
listed in the section „Technical Data“ . The limits of these
standards reasonably ensure protection of the environment
and corresponding noise immunity of the equipment. How­ever, it is not absolutely warranted that the equipment will
not be adversely affected by electromagnetic interference
during operation.
To minimize the probability of electromagnetic interference
as far as possible, the following recommendations should be
followed:

• Install the equipment in accordance with the operating
instructions. Use the supplied accessories.

• In the system and in the vicinity where the equipment is
installed, use only components (systems, equipment) that
also fulfill the above EMC standards.

• Use a system grounding concept that satisfies the safety
requirements (protection class I equipment must be con­nected with a protective ground conductor) that also takes
into consideration the EMC requirements. When deciding
between radial, surface or combined grounding, the ad­vantages and disadvantages should be carefully evaluated
in each case.

• Use shielded cables where shielding is specified. The
connection of the shield to the corresponding connector
terminal or housing should have a large surface and be
corrosion-proof. Please note that a cable shield connected
only single-ended can act as a transmitting or receiving
antenna (e.g. with an effective cable length of 5 m, the
frequency is above 10 MHz) and that the edges of the
digital communication signals cause high-frequency ra­diation (e.g. LS or HC logic up to 30 MHz).

• Avoid ground loops or reduce their adverse effects by
keeping the loop surface as small as possible, and reduce
the noise current flowing through the loop by inserting an
additional impedance (e.g. common-mode rejection
choke).

X

Class A Equipment - FCC Notice

Konformitätserklärungen / Declarations of conformity

This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide a rea­sonable protection against harmful interference when the
equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential

CE-Konformitätserklärung

Der Hersteller,
Studer Professional Audio AG,

CH-8105 Regensdorf,
erklärt in eigener Verantwortung, dass das Produkt

Studer D424, 2-Channel Professional MO-Disk Recorder,

(ab Serie-Nr. 101),

auf das sich diese Erklärung bezieht, entsprechend den Be­stimmungen der EU-Richtlinien und Ergänzungen

• Elektromagnetische Verträglichkeit (EMV):
89/336/EWG + 92/31/EWG + 93/68/EWG

• Niederspannung:
73/23/EWG + 93/68/EWG

mit den folgenden Normen und normativen Dokumenten
übereinstimmt:

• Sicherheit:
Schutzklasse 1, EN 60950:1992 + A1/A2:1993

•EMV:
EN 50081-1:1992, EN 50082-1:1992

Regensdorf, 18. Juli 1996

area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own
expense.

Caution:
Any changes or modifications not expressly approved by the
manufacturer could void the user's authority to operate the
equipment. Also refer to relevant information in this man­ual.

CE Declaration of Conformity

The manufacturer,
Studer Professional Audio AG,

CH-8105 Regensdorf,
declares under his sole responsibility that the product

Studer D424, 2-Channel Professional MO-Disk Recorder,

(on from serial No. 101),

to which this declaration relates, according to following
regulations of EU directives and amendments

• Electromagnetic Compatibility (EMC):
89/336/EEC + 92/31/EEC + 93/68/EEC

• Low Voltage (LVD):
73/23/EEC + 93/68/EEC

is in conformity with the following standards or other nor­mative documents:

• Safety:
Class 1, EN 60950:1992 + A1/A2:1993

•EMC:
EN 50081-1:1992, EN 50082-1:1992

Regensdorf, July 18, 1996

B. Hochstrasser, President, International Sales

P. Fiala, Leiter QS

B. Hochstrasser, President, International Sales

P. Fiala, Manager QA

XI

D424 MO Recorder

CONTENTS

1 General......................................................................................................................................................................... E1/1

1.1 MO Recording................................................................................................................................................... E1/1

1.2 The Medium – Magneto-Optical Disks.............................................................................................................. E1/2

1.2.1 Disk Standards................................................................................................................................................E1/2

1.2.2 Disk Formatting..............................................................................................................................................E1/3

1.2.3 Disk Capacities...............................................................................................................................................E1/3

1.2.4 Disk Handling.................................................................................................................................................E1/4

1.3 File Systems, File Formats, Audio Files............................................................................................................ E1/5

1.3.1 Takes, Indices, and Sequences........................................................................................................................E1/5

1.3.2 Non-Destructive Editing.................................................................................................................................E1/7

1.4 Utilization for the Purpose Intended.................................................................................................................. E1/8

1.5 Copyright........................................................................................................................................................... E1/8

1.6 First Steps.......................................................................................................................................................... E1/8

1.6.1 Unpacking and Inspection ..............................................................................................................................E1/8

1.6.2 Installation......................................................................................................................................................E1/8

1.6.3 Adjustments, Repair........................................................................................................................................E1/9

1.6.4 Accessories, Options.......................................................................................................................................E1/9

1.6.5 Connector Field ............................................................................................................................................E1/10

1.6.6 Connector Pin Assignments..........................................................................................................................E1/11

1.7 Technical Specifications.................................................................................................................................. E1/13

1.7.1 Drive System ................................................................................................................................................E1/13

1.7.2 Recording Formats........................................................................................................................................E1/13

1.7.3 Audio Processing..........................................................................................................................................E1/13

1.7.4 Audio Input/ Output......................................................................................................................................E1/13

1.7.5 Synchronization............................................................................................................................................E1/14

1.7.6 Timecode......................................................................................................................................................E1/14

1.7.7 Control Interfaces.........................................................................................................................................E1/14

1.7.8 Power Supply................................................................................................................................................E1/15

1.7.9 Operating Conditions....................................................................................................................................E1/15

1.7.10 Standards ......................................................................................................................................................E1/15

1.7.11 Physical Dimensions.....................................................................................................................................E1/15

1.8 Syntax Used in this Manual............................................................................................................................. E1/16

2 Operating elements..................................................................................................................................................... E2/1

2.1 General............................................................................................................................................................... E2/2

2.2 Transport Section............................................................................................................................................... E2/2

2.3 Editing Section................................................................................................................................................... E2/3

2.4 Keyboard and Register Section.......................................................................................................................... E2/3

2.5 Display and Menu Section ................................................................................................................................. E2/4

2.6 Additional Functions (Desktop Controller only)................................................................................................ E2/4

Date printed: 06.03.02 SW V 1.6 Contents E0/1

D424 MO Recorder

3 Getting Started Quickly..............................................................................................................................................E3/1

3.1 Recording New Takes From an Analog Source.................................................................................................E3/1

3.1.1 Installation and Settings................................................................................................................................. E3/1

3.1.2 Start Recording...............................................................................................................................................E3/1

3.2 Recording New Takes From a Digital Source....................................................................................................E3/2

3.2.1 Installation and Settings................................................................................................................................. E3/2

3.2.2 Start Recording...............................................................................................................................................E3/2

3.3 Playing Pre-Recorded Disks...............................................................................................................................E3/3

3.3.1 Installation and Settings................................................................................................................................. E3/3

3.3.2 Position .......................................................................................................................................................... E3/3

3.3.3 PLAY and STOP............................................................................................................. ............................... E3/3

3.3.4 Skip to Take and Index Markers....................................................................................................................E3/3

3.3.5 CUE and SHUTTLE ...................................................................................................................................... E3/3

3.3.6 LOCATE........................................................................................................................................................ E3/4

3.3.7 Setting Markers.............................................................................................................................................. E3/4

3.4 Editing................................................................................................................................................................E3/5

3.4.1 Before You Start Editing................................................................................................................................ E3/5

3.4.2 Cut Out or Erase an Element – Cut/ Erase Editing......................................................................................... E3/5

3.4.3 Move or Duplicate an Element – Insert Editing............................................................................................. E3/6

3.5 Insert Recording.................................................................................................................................................E3/7

3.5.1 Before You Start Recording........................................................................................................................... E3/7

3.5.2 Manual Insert Recording................................................................................................................................ E3/7

3.5.3 Auto Insert Recording.................................................................................................................................... E3/7

3.6 Working with Sequences....................................................................................................................................E3/8

3.6.1 Change the Current Sequence ........................................................................................................................ E3/8

3.6.2 Create a New Sequence.................................................................................................................................. E3/8

3.6.3 Modify a Sequence......................................................................................................................................... E3/8

3.6.4 Copy a Sequence............................................................................................................................................ E3/9

3.6.5 Delete a Sequence.......................................................................................................................................... E3/9

3.7 CD Transfer and Disk Copies...........................................................................................................................E3/10

3.7.1 Before you Start the Transfer....................................................................................................................... E3/10

3.7.2 Creating a CD with an External SCSI CD Writer (e.g. Studer D741).......................................................... E3/10

3.7.3 Copying a CD to the D424.................................................................................................. ......................... E3/11

3.7.4 Copying to/ from Other MO Disks............................................................................................................... E3/11

3.8 Working with Timecode...................................................................................................................................E3/12

3.8.1 Recording Timecode.................................................................................................................................... E3/12

3.8.2 Playing Back Timecode ............................................................................................................................... E3/12

3.8.3 Chasing to Timecode....................................................................................................................................E3/12

3.9 The Desktop Controller ....................................................................................................................................E3/13

3.9.1 Installation and Settings............................................................................................................................... E3/13

3.9.2 Operation Enhancements.............................................................................................................................. E3/13

3.10 The Parallel Port with Fader Start Operation...................................................................................................E3/14

3.10.1 Signal List.................................................................................................................................................... E3/14

3.10.2 Fader Start.................................................................................................................................................... E3/14

3.11 The Setup Menu...............................................................................................................................................E3/15

E0/2 Contents SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

4 Operation..................................................................................................................................................................... E4/1

4.1 System Configuration ........................................................................................................................................ E4/1

4.1.1 Recording Formats..........................................................................................................................................E4/1

4.1.2 Audio Input.....................................................................................................................................................E4/2

4.1.3 Reference Clock Source..................................................................................................................................E4/2

4.1.4 Other Parameters ............................................................................................................................................E4/3

4.2 Display and Register Functions ......................................................................................................................... E4/4

4.2.1 Display Information and Formats...................................................................................................................E4/4

4.2.2 Using General Purpose Registers....................................................................................................................E4/6

4.3 Basic Transport Operation................................................................................................................................. E4/7

4.3.1 The Current Position.......................................................................................................................................E4/7

4.3.2 Playback and Stop ..........................................................................................................................................E4/9

4.3.3 Skipping to Take and Index Markers..............................................................................................................E4/9

4.3.4 The CUE and SHUTTLE Modes....................................................................................................................E4/9

4.3.5 Locating to a Random Position.....................................................................................................................E4/10

4.4 Recording......................................................................................................................................................... E4/11

4.4.1 The D424 Recording Modes.........................................................................................................................E4/11

4.4.2 Channel Assignments....................................................................................................................................E4/12

4.4.3 Rehearse Mode.............................................................................................................................................E4/12

4.4.4 Meters...........................................................................................................................................................E4/13

4.4.5 Adjusting the Analog Input Level.................................................................................................................E4/13

4.4.6 Before You Start Recording... ......................................................................................................................E4/13

4.4.7 Assemble Recording........................................................................................................ .............................E4/14

4.4.8 Insert Recording ...........................................................................................................................................E4/14

4.4.9 Auto Insert Recording...................................................................................................................................E4/15

4.5 Editing ..................................................................................................................... ........................................ E4/16

4.5.1 Setting IN and OUT Points...........................................................................................................................E4/16

4.5.2 The CUT Function........................................................................................................................................E4/17

4.5.3 The ERASE Function...................................................................................................................................E4/18

4.5.4 The INSERT Function..................................................................................................................................E4/18

4.5.5 Combined Editing Processes ........................................................................................................................E4/19

4.5.6 The PREVIEW Function..............................................................................................................................E4/19

4.6 Sequence Editing............................................................................................................................................. E4/21

4.6.1 Selecting a Sequence ....................................................................................................................................E4/21

4.6.2 Creating a New Sequence.............................................................................................................................E4/21

4.6.3 Deleting a Sequence .....................................................................................................................................E4/21

4.6.4 Editing a Sequence .......................................................................................................................................E4/22

4.7 CD Transfer and Disk Copies.......................................................................................................................... E4/24

4.7.1 Configuration................................................................................................................................................E4/24

4.7.2 Transfer to a CD Writer................................................................................................... .............................E4/24

4.7.3 Copying a CD to the D424 ...........................................................................................................................E4/26

4.7.4 Copying to/from Other Disks........................................................................................................................E4/27

4.7.5 Transfer Parameters......................................................................................................................................E4/28

4.7.6 SCSI Addresses............................................................................................................................................E4/29

4.8 Backup Copies................................................................................................................................................. E4/30

4.8.1 Sequence Backup..........................................................................................................................................E4/30

4.8.2 Disk Backup ............................................................................................................... ..................................E4/31

4.9 Data Exchange with SADiE

®

Workstations..................................................................................................... E4/32

4.9.1 DAW Configuration .....................................................................................................................................E4/32

4.9.2 Importing D424 Disks to the DAW..............................................................................................................E4/32

4.9.3 Importing SADiE

®

Disks to the D424..........................................................................................................E4/33

Date printed: 06.03.02 SW V 1.6 Contents E0/3

D424 MO Recorder

4.10 Setup Menu ......................................................................................................................................................E4/34

4.10.1 Accessing and Modifying Menu Items......................................................................................................... E4/34

4.10.2 Overview...................................................................................................................................................... E4/35

4.10.3 Menu 1, CONFIG (System Configuration).................................................................................................. E4/36

4.10.4 Menu 2, REF & INP (Reference & Input Parameters)................................................................................. E4/37

4.10.5 Menu 3, AUDIO (Audio Parameters) .......................................................................................................... E4/38

4.10.6 Menu 4, TRANSPORT (Transport & Display Parameters)......................................................................... E4/39

4.10.7 Menu 5, DISK (Disk & Sequence Utilities)................................................................................................. E4/40

4.10.8 Menu 6, COPY (Copy Utilities)................................................................................................................... E4/42

4.10.9 Menu 7, SERVICE (Service Utilities)..........................................................................................................E4/44

4.11 Desktop Controller...........................................................................................................................................E4/45

4.11.1 Configuration............................................................................................................................................... E4/45

4.11.2 Operation...................................................................................................................................................... E4/45

4.12 Parallel Port and Fader Start Operation............................................................................................................E4/46

4.12.1 Specifications............................................................................................................................................... E4/46

4.12.2 Signal Description ........................................................................................................................................ E4/46

4.12.3 Fader Start.................................................................................................................................................... E4/47

4.13 Serial Remote Operation..................................................................................................................................E4/48

4.13.1 Command List.............................................................................................................................................. E4/48

5 Troubleshooting...........................................................................................................................................................E5/1

5.1 Error Messages...................................................................................................................................................E5/1

5.2 Modifying the D424 SCSI Address....................................................................................................................E5/3

6 D424 - Circuits, Jumper Setting.................................................................................................................................E6/1

6.1 Motherboard.......................................................................................................................................................E6/1

6.1.1 Clock Regeneration........................................................................................................................................ E6/1

6.1.2 Time Code...................................................................................................................................................... E6/2

6.1.3 Audio.............................................................................................................................................................. E6/2

6.1.4 Desktop Controller......................................................................................................................................... E6/3

6.1.5 Power Supply................................................................................................................................................. E6/3

6.1.6 Jumper and DIP Switch Settings.................................................................................................................... E6/3

6.2 Core....................................................................................................................................................................E6/4

6.2.1 Jumper and DIP Switch Settings.................................................................................................................... E6/4

6.3 A/D-D/A Board..................................................................................................................................................E6/5

6.3.1 Level Setting ................................................................................................................................................. E6/5

6.4 Keyboard ...........................................................................................................................................................E6/5

6.5 Display Board ....................................................................................................................................................E6/5

6.6 Connector Pin Assignments ...............................................................................................................................E6/6

7 Desktop Controller - Circuits, Jumper Setting.........................................................................................................E7/1

7.1 Remote Keyboard ..............................................................................................................................................E7/1

7.2 Remote Control PCB .........................................................................................................................................E7/1

7.3 Display PCB ......................................................................................................................................................E7/1

E0/4 Contents SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

8 Diagrams..............................................................................................................................................................................

9 Appendix...................................................................................................................................................................... E9/1

9.1 Serial Remote Protocol...................................................................................................................................... E9/1

9.1.1 RS422 9-pin Protocol (Sony-Compatible)......................................................................................................E9/1

9.1.2 Communication Format..................................................................................................................................E9/1

9.1.3 Hardware Layer..............................................................................................................................................E9/2

9.1.4 Messages.........................................................................................................................................................E9/2

9.1.5 Command List.................................................................................................................................................E9/4

9.1.6 Command Messages .......................................................................................................................................E9/5

9.2 Drive Installation Instructions............................................................................................................................ E9/7

9.2.1 MO Drive Kit 2.6 GB (ISO)...........................................................................................................................E9/7

9.2.2 MO Drive Kit 5.2 GB (ISO)...........................................................................................................................E9/8

9.3 Hardware Configuration (Jumper and DIP Switch Settings) ............................................................................. E9/9

9.3.1 Motherboard...................................................................................................................................................E9/9

9.3.2 Core ................................................................................................................................................................E9/9

Date printed: 06.03.02 SW V 1.6 Contents E0/5

1 GENERAL

1.1 MO Recording

D424 MO Recorder

For a long time, analog tape recording has been the standard recording
technology in the professional audio industry. The step into the digital
audio era has been done a few years ago with the introduction of digital
tape recorders, such as DASH and R-DAT machines. Another important
evolution was pushed by the computer industry: Hard disk-based worksta­tions record on fast, direct-access media that are also capable for later ed­iting without destroying the original information.

Beginning with the consumer format CD, a removable medium with ex­cellent price and archiving characteristics, the optical disk became in the
meantime a reliable recording media standard, in audio and computer in­dustry.

Taking the advantages of the above approaches:

• Well accepted and easy-to-understand surface of a dedicated audio re­corder,

• Versatile and future-proof technology, based on standard data storage de­vices (SCSI-2),

• Removable medium with very good archiving characteristics and the capa­bility for direct access editing,
the Studer D424-2 MO recorder has been designed to be integrated into
today's and future environments, combined with analog and digital audio
processing and automation. It is ready to follow the rapid evolution of re­cording technology, without neglecting the needs of the professional user.

Date printed: 22.02.02 SW V 1.6 General E1/1

D424 MO Recorder

1.2 The Medium – Magneto-Optical Disks

1.2.1 Disk Standards

The D424 MO recorder with ISO drive is equipped with a 5.25" MO drive
capable of reading and writing to the standard double-sided 5.25" disk
types listed below. Only high-quality disks should be used for the D424
application. Please contact your Studer representative for information on
the recommended suppliers.

1.2 GB (512 bytes/sector) available on request

2.3 GB (512 bytes/sector) available on request

1.3 GB (1024 bytes/sector) available on request

2.6 GB (1024 bytes/sector) Order No. 15.622.260.13

4.8 GB (1024 bytes/sector) available on request

5.2 GB (2048 bytes/sector) available on request

The D424 will automatically recognize the type of the disk being inserted.
Direct-overwrite (LIM-DOW) type disks are only supported when the
D424 is equipped with a F-541-DW drive.

1.2.2 Disk Formatting

New disks are preformatted from the manufacturer. This process is called
“low-level formatting”. It is only useful after having cleaned a disk that
had numerous defective blocks. Low-level formatting will then re-check
every bit on the disk for validity, which can take up to 40 minutes.
In order to start recording, the D424 only has to add the basic system files.
Building up a DOS system and installing the basic D424 files is called
“high-level formatting”, or simply “formatting”. This process takes only a
few seconds.
After inserting a new, empty disk for the first time, the D424 will auto­matically ask for formatting. Any prerecorded disk may be re-formatted at
any time. This is a fast and direct way to delete the whole contents of a
disk.

E1/2 General SW V 1.6 Date printed: 22.02.02

1.2.3 Disk Capacities

Notes: All 5.25" disks are double-sided. Each side provides the stereo capacity

D424 MO Recorder

Depending on disk type, sampling rate, and recording format, the record­ing capacity will vary. The following table shows some examples of the
recording capacities (stereo, per side):

Disk type 44.1 kHz / 16 bit 48 kHz / 16 bit 48 kHz / 24 bit

1.2 GB ISO 55 min 50 min 34 min

1.3 GB ISO 60 min 55 min 37 min

2.3 GB ISO 1 h 45 min 1 h 37 min 1 h 5 min

2.6 GB ISO 2 h 1 h 50 min 1 h 15 min

4.8 / 5.2 GB ISO 3 h 15 min 3 h 2 h

listed above.
Because of the DOS operating system, a maximum of 2 GB can be used;

4.8 and 5.2 GB disks are automatically formatted with a maximum parti­tion.
With 1.2 and 1.3 GB disks, the insert recording modes are limited to 16
and 20 bit resolution. For assemble recording and editing there is no such
limitation.

Date printed: 22.02.02 SW V 1.6 General E1/3

D424 MO Recorder

1.2.4 Disk Handling

Disks can be write-protected by sliding the appropriate tab to the “ data
protect” position (see manufacturer's information).

DATA PROTECT

The magneto-optical medium is very reliable. Nevertheless, there are some
recommendations for disk storage and handling:

• Always store a disk in its case.

• Keep the disk cartridges away from sources of heat, excessive dust, or
moisture.
Please, follow also the information of the disk manufacturer.

After being exposed to a dusty environment, some blocks may be marked
as defective during recording. The MO drive will automatically assign
spare blocks for storing the affected audio information.
The D424 will check a disk when set to RECORD READY. A warning
message will be displayed if more than 60 grown defective sectors were
found.
When starting with a new production, empty disks should not report any
defective blocks. It is therefore recommended to clean empty disks with
appropriate tools when encountering such warning messages. After a sub­sequent low-level formatting process, the disk will again be in perfect
shape for further recordings.
If the number of reported defective blocks is increasing notably, any fur­ther recording and editing should be avoided. Backup your data before re­suming your session.
Please contact your disk supplier or Studer for detailed information on
accessories as disk cleaning kits.

E1/4 General SW V 1.6 Date printed: 22.02.02

1.3 File Systems, File Formats, Audio Files

The D424 MO-recorder is based on a SCSI-controlled magneto-optical
drive, and standard ISO disks as storage medium. The same drives and
disks are used in computer applications for storing and archiving.
By using the same file system and formats as MS-DOS based computer
platforms, disks that were recorded with a D424 can be played by all DOS
based systems – from simple multimedia computers to fully professional
audio workstations.
The D424 is storing all audio information to sound files in standard Micro­soft Wave format (*.WAV), including all relevant recording parameters, as
sampling rate, word length, and number of channels.
All further information on the structure of a session as well as all editing
information are kept in separate sequence files (*.seq), also known under
the name Edit Decision List (EDL).

1.3.1 Takes, Indices, and Sequences

D424 MO Recorder

When working with the D424, you don't have to care for sound files, di­rectories, or disk structures and the like; the following definitions, how­ever, are important for your recording, editing, and playback work.

The recorded material is subdivided into takes and indices.

• Every time you start recording, a new take is created.

• Place additional take markers during a long recording session. In a concert
you may mark the begin of a new song. This will save time for creating the
definitive markers when editing later.

• Store additional index markers at positions to be edited. Later, you will be
able to address them directly, without the need for searching.

• During the subsequent editing session, all markers having been previously
set can be deleted or moved. New ones can be set in order to prepare your
project for transferring to a CD, with all desired take and index markers.

When you start working with a new project, all settings and editing infor­mation will be stored to the currently selected sequence. Only one se­quence can be active at a time, this is called the “Current Sequence” .

• When you start recording on a new disk, a first sequence will be created.
You will stay with this first sequence until you switch to a new one.

• Create a new, empty sequence for a different project. Start recording and
do your editing session in a separate environment. It is very easy to switch
between different sequences.

• You can have several sequences for a single project – do your basic editing
first, copy the current sequence to a new one, and continue with your ses­sion. You will have access to the basic version at any time.

• Make different versions of an original recording. You can decide at the
end of your projects, which one you would like to keep – or keep all of
them. Sequences do not require much storage capacity.

Date printed: 22.02.02 SW V 1.6 General E1/5

D424 MO Recorder

Takes, Indices: Insert a new, empty disk, set the channels ready, and press REC+PLAY.

The first take in the initial sequence 1 will be recorded. Each time you start
recording, a new take is created, which is given a numbered take marker at
its beginning automatically.
After having recorded three audio takes, the contents of the disk will look
like this:

12 3

take 1 take 2 take 3

The current sequence now consists of three takes. Simply record one more
take, and you will end up with:

12 34

take 1 take 2 take 3 take 4

Whenever there is a need for marking certain points within a take, or to
subdivide a single take into smaller parts, you can create indices by freely
placing index or take markers anywhere within your sequence, either on­line during recording, or later when editing.

Take 2 can be divided into two separate takes by placing an additional
marker. The new take marker gets number 5, which is the next free number
in the current sequence. In addition, a certain position in take 4 is marked
with an index.

125 34.14.2

take 1 take 2 take 5 take 3 take 4

After having placed these markers, you can not only skip from one original
take to the next one, like with a CD player, but also skip to the new mark­ers.
In the example above, the skip sequence is: 1 – 2 – 5 – 3 – 4.1 – 4.2

All the markers can simply be deleted if they are not required anymore. In
case of deleting the take markers 3 and 5 in the above example, the takes 2,
5, and 3 would be joined to a new take. The result would be like this:

12 4.14.2

take 1 take 2 take 4

Finally, markers can be moved, to adjust the take structure of the existing
source material, e.g. to define the position of the tracks and indices of a
CD, or to prepare precise start positions for on-air broadcasting.

After moving the begin of take 2, the above sequence will look like this:

12 4.14.2

take 1 take 2 take 4

E1/6 General SW V 1.6 Date printed: 22.02.02

D424 MO Recorder

Sequences: If it is necessary to make another production with the same recorded mate-

rial, a new sequence is defined. In the following example, only the takes 2,
3, and 4 should be edited, but in reverse order.

12 34

take 1 take 2 take 3 take 4

For this purpose, create a new sequence with the Sequence Editing feature,
insert the required takes in their new order (takes 4, 3, and 2), and the new
sequence will be:

432

take 4 take 3 take 2

You can now start with further editing, like changing markers, renumber­ing, cutting or re-arranging audio information, or adjusting levels.
With a few keystrokes you can switch to another available sequence on the
disk, and start playing, recording, or editing.

Note: Creating new sequences does not need additional audio file capacity on a

disk. There is only a new small EDL file, describing how to play the same
audio data in a different way.

1.3.2 Non-Destructive Editing

The D424 is providing non-destructive editing. Because all editing proc­esses are simply instructions on how to play the original sound files, the
original audio data remain untouched during the whole editing process.

The following processes therefore only modify the sequence data, not the
original audio data:

• Creating, deleting or moving markers.

• Deleting, erasing and inserting audio elements.

• Changing the order of takes.

• Adjusting output levels.
It is possible to have several sequences on the same disk representing dif­ferent variations of the same basic audio material. Each sequence stores
the editing data into its own sequence file, but will make use of the same
audio files.
Without explicitly deleting sound files, which has to be done with a sepa­rate menu utility, the original data can be re-used at any time. It is hardly
possible to delete audio data by accident.

Date printed: 22.02.02 SW V 1.6 General E1/7

D424 MO Recorder

1.4 Utilization for the Purpose Intended

The Studer D424 is a Disk recorder intended for professional use. It is
designed for recording on MO disks.

It is presumed that the unit is operated only by trained personnel. Servic­ing is reserved to skilled technicians.
The electrical connections may be connected only to the voltages and sig­nals designed in this manual.

1.5 Copyright

Copies of pre-recorded Material:
Please consider that copying pre-recorded information is only allowed
with the approval of the authorized copyright holders of the original mate­rial.

1.6 First Steps

1.6.1 Unpacking and Inspection

Your new MO recorder is shipped in a special packing which protects the
unit against mechanical shock during transit. Care should be exercised
when unpacking so that its surfaces do not get marred.
Verify that the content of the packing agrees with the items listed on the
enclosed shipping list.
Check the condition of the equipment for signs of shipping damage. If
there should be any complaints you should immediately notify the for­warding agent and your nearest Studer distributor.
Please retain the original packing material because it offers the best pro­tection in case your equipment ever needs to be transported.

1.6.2 Installation

Power Connection: The attached female IEC 320/C 13 mains cable socket has to be connected

to an appropriate mains cable by a trained technician with respect to your
local regulations. Refer to the “Installation, Operation, and Waste Dis­posal” section at the beginning of this manual.

Maintenance work inside the unit must be performed by a trained techni­cian.

Humidity: Do not use the unit near any source of moisture or in excessively humid

environments.

Cooling: To allow for reliable operation, the maximum temperature of the disk car-

tridge must never exceed 55° C (131° F), no matter in which operating
mode. When installing the unit in a rack or any other location, be sure that
there is sufficient ventilation. The maximum ambient temperature for op­erating the unit is 35° C.
A unit operated outside a rack must be placed on a rigid, flat surface. The
air vents must never be covered completely or partially.

E1/8 General SW V 1.6 Date printed: 22.02.02

When operating the unit inside a rack, sufficient cross-sections must be
provided above and below the unit for air convection. The air inlet below
the unit must have a minimum cross-section of 8 × 420 mm. Above the
unit, a free area of minimum 43 mm (1U) with an air outlet of
40 × 420 mm must be provided.
During operation, the temperature of the incoming air (from the front of
and from below the unit) must never exceed 35° C.

1.6.3 Adjustments, Repair

Danger: All internal adjustments as well as repair work on this product are to be

performed by skilled technicians!
During service work dangerous laser radiation can occur, so the appro­priate precautions must be taken.

Primary Fuse: The primary fuse (F 4 A H 250 V, 5 × 20 mm) is located inside the unit.

Therefore only skilled technicians are authorized to replace the fuse.

D424 MO Recorder

1.6.4 Accessories, Options

Accessories Shipped with the D424: 1 Operating manual (English) Order No. 10.27.3803

1 Female mains connector (IEC 320/C 13) Order No. 54.42.1050
1 MO Disk
1 Hexagon pin spanner 2.5 mm Order No. 98.00.2023
2 Fuses F 4 A, 250 V Order No. 51.01.0156

D424 Options: Desktop Controller Order No. 20.866.500.00

Recording Media: MO Disk 2.6 GB ISO Order No. 15.622.260.13

(Other capacities available on request)

Date printed: 22.02.02 SW V 1.6 General E1/9

D424 MO Recorder

1.6.5 Connector Field

[3] [11] [9] [5] [6][8]

OUT 1

LINE

OUT 2

IN 1

LINE

IN 2

SCSI-2

SERIAL

CONTROLLER

CONTROLLER

PARALLEL

VIDEOIN OUT

75 Ω

Ω

ΩΩ

OFF

WORDCLOCKIN OUT

75

ΩΩΩΩ

OFF

IN OUTSYNC AES/EBU TCIN OUTAES/EBU

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

ATTENTION

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

ACHTUNG

GEFAHR: ELEKTRISCHER SCHLAG

NICHT ÖFFNEN

[2] [10] [4] [7] [1]

[1] AC PLUG AC power connector IEC 320/C 14

for mains supply 100...240 V, 50...60 Hz

[2] AES/EBU IN/OUT AES/EBU digital audio I/O

Input (XLR-3, female) and output (XLR-3, male)

[3] ANALOG IN/OUT Analog audio I/O

(optional) Input CH1/CH2 (XLR-3 female) and output CH1/CH2 (XLR-3 male)

100 - 240 V

~

[4] SYNC AES/EBU AES-11 digital audio reference

Input (XLR-3, female)

[5] VIDEO REFERENCE Composite Video Reference, 75 Ω termination selectable

Input and output (loop through), BNC connectors

[6] WORD CLOCK Digital word clock, 75 Ω termination selectable

Input and output, BNC connectors

[7] TIME CODE SMPTE/EBU longitudinal timecode

Input (XLR-3 female), and output (XLR-3 male)

[8] SERIAL Serial remote RS-422, Input

(SONY 9-pin compatible)

[9] CONTROLLER Desktop Controller, input and output (loop through)

For Desktop Controller operation and multi-machine configurations

[10] PARALLEL Parallel GPI port, input/output

[11] SCSI-2 SCSI-2 port

For external drive configurations and SCSI data transfer

E1/10 General SW V 1.6 Date printed: 22.02.02

1.6.6 Connector Pin Assignments

D424 MO Recorder

INPUT/OUTPUT LEFT/RIGHT

AES/EBU DIGITAL IN/OUT

SERIAL 9 pin D-type, female

IN OUT

1

2

3

1 2

3

XLR-3f XLR-3m

IN OUT

1

2

3

1 2

3

XLR-3f XLR-3m

Pin Signal Function

1

FGND

2

15

69

TXA

3

RXB

4

RXC

5

VCC

6

TXC

7

TXB

8

RXA

9

FGND

Pin Signal

1

Ground

2

Line A ("hot")

3

Line B ("cold")

Pin Signal

1

Ground

2

Line A ("hot")

3

Line B ("cold")

Frame ground
Transmit A (inverted)
Receive B
Receive common
Supply voltage +24 V, switchable
Transmit common
Transmit B
Receive A (inverted)
Frame ground

CONTROLLER 15 pin D-type, female

Pin Signal Function

1

PHL–

2

PHR–

3

AGND

4

REMT

5

8 1

915

Date printed: 22.02.02 SW V 1.6 General E1/11

6
7
8

9
10
11
12
13
14
15

REMR
STSTR
SYNCBUS
DGND
PHL+
PHR+
+24 V
IREMT
IREMR
ISTSTR
ISYNCBUS

Phones left, inverted
Phones right, inverted
Analog ground
Rem bus transmit
Rem bus receive
Start signal
Sync bus
Digital ground
Phones left
Phones right
Supply voltage
Rem bus transmit, inverted
Rem bus receive, inverted
Start signal, inverted
Sync bus, inverted

D424 MO Recorder

PARALLEL 15 pin D-type, female

Pin Signal Function

1
2
3
4

81

5
6
7
8

915

9
10
11
12
13
14
15

B_TAKE
B_INDEX
B_PLAY
S_STOP
S_PLAY
S_PLOC
FADER1
GND
B_STOP
B_READY
VCC
S_PREV
S_NEXT
FADER2
KEY

Take pulse
Index pulse
Play tally
Stop command
Play command
Ploc command
Fader start input 1
Ground
Stop tally
D424 ready
Supply voltage, switchable 5/24 V
Previous command
Next command
Fader start input 2
Key

E1/12 General SW V 1.6 Date printed: 22.02.02

D424 MO Recorder

1.7 Technical Specifications (Subject to change as technological progress may warrant)

1.7.1 Drive System

The D424 is equipped with an ISO standard 2.6 or 5.2 GB drive supporting
the following 5¼" disk standards:
2 × WO 1.2 / 1.3 GB 512/1024 bytes/sector
4 × WO/DW 2.3 / 2.6 GB 512/1024 bytes/sector
8 × WO 4.1 / 4.8 / 5.2 GB 512/1024/2048 bytes/sector
(WO = Write Once; DW = Direct Overwrite)

The D424 also supports SCSI CD writers.

1.7.2 Recording Formats

• Linear recording mode with 16, 20 or 24 bit resolution

• Standard file system and audio files (MS-DOS and WAVE)

• Session data supports major manufacturer standard

1.7.3 Audio Processing

Switchable Word Length 16/20/24 bits

Sampling Rates 44.056, 44.1, 47.952, 48 kHz

Varispeed Operation ±12.5%

Digital Scrub Range 0...±2 V

nom

Real-time Output Gain Control (–∞...12 dB)

1.7.4 Audio Input/Output

Digital I/O AES-3, balanced, transformer coupled, XLR connector

Monitor Output (headphone connector)

• Unbalanced, 6.3 mm Jack connector

• 16 bit D/A converter

Impedance 100 Ω

Level Max. 7 V, with potentiometer volume control

Analog In (measured with line level of +15 dBu for 0 dB

• Balanced, transformer coupled, XLR connector

• 20 bit delta-sigma converter (64 times oversampling)

Impedance >10 kΩ

Level 10...24 dBu (for 0 dB

),

FS

electronically adjustable in steps of 0.5 dB

Frequency Response 20 Hz...20 kHz ±0.1 dB

THD + N < –87 dB

< –103 dB

(20 Hz...20 kHz, 0 dBFS)

FS

(1 kHz, –20 dBFS)

FS

Channel Crosstalk > 110 dB (1 kHz)

)

FS

Date printed: 22.02.02 SW V 1.6 General E1/13

D424 MO Recorder

Analog Out (measured with line level of +15 dBu for 0 dBFS)

• Electronically balanced, XLR connector

• 20 bit delta-sigma converter (128 times oversampling)

Impedance < 30 Ω

Level 4 digitally selectable levels between 10...24 dBu (for 0 dB

with trimmer potentiometer (default +10, 15, 20, 24 dBu)

Frequency Response 20 Hz...20 kHz ±0.1 dB

THD + N < –90 dB

< –98 dB

(20 Hz...20 kHz, –1 dBFS)

FS

(1 kHz, –20 dBFS)

FS

Channel Crosstalk > 110 dB (1 kHz)

De-Emphasis 50 ms/15 ms

1.7.5 Synchronization

AES-11 Input XLR connector

Word Clock Input BNC connector, with termination selector. Minimum level: 1 Vpp

Composite Video Input 2 BNC connectors, with termination selector

Word Clock Output BNC connector, TTL Level

), adjustable

FS

1.7.6 Timecode

Accepts and generates all available formats:
24, 25, 29.97D and 30, 29.97 and 30D
(D = drop frame mode for NTSC compensation)

Reader For timecode recording and chase mode,

balanced, transformer coupled, XLR connector

Input Level 0.5...5 V

Speed Range 0.1...2 times nominal speed

Generator For providing LTC of current position,

balanced, transformer coupled, XLR connector

Nom. Output Level 2 V (peak to peak)

1.7.7 Control Interfaces

• Desktop Controller interface

For multi-machine configurations, providing sample-accurate synchron­ization between up to three D424 units (RS422, 15 pin D-type)

• System remote interface

With proprietary or SONY 9 pin protocol (RS422, 9 pin D-type)

• Parallel port

With basic commands, fader start and tallies (15 pin D-Type)

• SCSI-2 for external drives and data transfer

E1/14 General SW V 1.6 Date printed: 22.02.02

1.7.8 Power Supply

Power Requirements 100...240 VAC ±10%, 50...60 Hz, 1.4...0.6 A

1.7.9 Operating Conditions

Ambient Temperature: +5...+35 °C

Rel. Humidity: 10...80%, non-condensing

Operating Position: horizontal ±10°

1.7.10 Standards

Safety Standard: Protection class 1, EN 60950; 1992 + A1/A2; 1993

Class 1 laser product, EN 60825-1; 1994

EMC Standard: EN 50081-1; 1992, EN 50082-1; 1992

D424 MO Recorder

1.7.11 Physical Dimensions

Size 438 × 142 × 392 mm (W × H × D); 19" rack-mount size, 3 HU

Weight 9.5 kg

Date printed: 22.02.02 SW V 1.6 General E1/15

D424 MO Recorder

1.8 Syntax Used in this Manual

[COMMAND] Keyboard entries are indicated in bold printing and within [ ] brackets.

[PLAY] “PLAY” key.

[REC+PLAY] Double key combination: [REC] is pressed first and, as long as [REC] is

pressed, [PLAY] is pressed additionally.

[1...9] One of the keys [1] to [9].

[ENT or PLAY] Either the [ENT] or the [PLAY] key.

[SETUP] [3] [1] [6] [0] [ENT] [uuuu] [6] [0] [ENT] [SETUP]

Sequence of keys pressed one after the other.

E1/16 General SW V 1.6 Date printed: 22.02.02

2 OPERATING ELEMENTS

D424 MO Recorder

[1] [2] [3] [19] [18] [37]

[39] [41] [40] [27] [28] [29]

[42]

[38]

[36]

[35]

[34]

D 424 MO RECORDER DISK RECORDER SERIES

POWER

LOC CHASE LOOP

PHONES

PREV NEXT PLAY STOP REC

[4] [15] [16] [17] [14]

ASS
INS
AUT

[10]

CUE

SHTL

PEAK RESET

[12]

OVER

0

–2

–5

–7

–10

–14

–20

–30

–40

–50

dB

INP 1 INP 2 INP TC

RDY 1 RDY TCRDY 2

TIME–FORMAT–TAKE

SETUP SEQ

CUT ERASE INSERT 8 9

SOURCE UNDO TARGET

PREVIEW IN OUT CAPT

[20] [25] [30] [26]

[33]

REG

TAKE

IND

CLR

7

5

4

1

2

0

+/-

[32][24][23][31][22][21][11][13][6][7][9][8][5]

[37] [38][43][18][19]

D424 REMOTE CONTROLLER

PEAK RESET

OVER

–2

–5

–7

–10

–14

–20

–30

–40

–50

dB

0

DISK RECORDER SERIES

SETUP

SEQ

[41]

[39a] [40a]

[42]

7

8

9

5

6

UNIT 1

INP 1 INP 2INP TC

[20]

FORMAT

TIME TAKE

[27] [28] [29] [34]

CUT

ERASE INSERT

REG

4

[43]

6

3

ENT

UNIT 2

RDY 1RDY TC RDY 2

[40b][39b]

SOURCE

UNDO TARGET

[21]

UNIT 3

[22]

VOLUME

PHONES

[4] [46] [17][16] [14]

[44] [32]

VOL 1 VOL 2

[45]

INST LOCK CHASE LOOP

PREV NEXT PLAY STOP REC

ASS

INS
AUT

PREVIEW OUT CAPT

IN

[25] [30] [26]

[23][31]

LOC

[33][24]

CUE

SHTL

[5] [8] [9] [7] [6] [13] [15] [10] [11]

[35]

TAKE

IND

[36]

[12]

1

2

3

0

+/–

ENT

CLR

SLOW

[47]

Date printed: 22.02.02 SW V 1.6 Operating Elements E2/1

D424 MO Recorder

2.1 General (* = not available on Desktop Controller)

*[1] POWER Switches the D424 on or off.

*[2] Disk A disk is inserted by gently pushing it in until the loading mechanism en-

gages.

*[3] tttt IIII (Eject) A disk is ejected by pressing this button in stop mode.

[4] VOLUME A stereo headphone may be connected to the 6.3 mm jack socket [5], the
[5] PHONES volume is adjusted with potentiometer [4].

2.2 Transport Section

[6] STOP Stops the recorder at the current position.

During recording, a stop command terminates the session.

[7] PLAY Starts playing from the current position.

During insert recording, a play command performs a punch-out.

[8] PREV Skips to the previous take or index marker.

[9] NEXT Skips to the next take or index marker.

[10] CUE/SHTL The control wheel key [10] switches to CUE or SHTL (shuttle mode),
[11] Control Wheel starting with the one that was used last. Each subsequent keystroke toggles
[12] Speed Indication LEDs between speed control (SHTL) and position control (CUE). The currently

selected mode is indicated with the LEDs next to the CUE/SHTL key.
The control wheel allows to modify speed or position, the current speed is
indicated with the speed indication LEDs.

[13] REC Recording is started by pressing [REC+PLAY] simultaneously; a record-

pause status is entered with the key combination [REC+STOP].

[14] ASS/INS/AUT (Rec. Mode) One of the available recording modes (ASSemble/INSert/AUTo) is pre-se-

lected by pressing the key [14] until the desired mode is indicated.

[15] LOC With this key and a subsequent destination (register, take/index number, or

a shortcut) the D424 can be set to a new position.

[16] CHASE In chase mode, the D424 is following the external timecode.

[17] LOOP In loop mode the D424 plays the element between the IN and OUT point

repeatedly.

[18] LED Level Meter Displays input or disk level, either in peak or in peak hold mode.

[19] PEAK RESET For resetting the meter display when in peak hold mode.

[20] INP 1, INP 2 Output source selection. Either the input signal (LED is on) or the infor-

mation from the disk (LED is off) is provided at the output channels.

E2/2 Operating Elements SW V 1.6 Date printed: 22.02.02

D424 MO Recorder

[21] RDY 1, RDY 2 Record ready switch. The LED is flashing when the channel is set ready

for recording; it is on during recording.

[22] RDY TC, INP TC Timecode channel selectors.

2.3 Editing Section

[23] IN, IN and OUT are the edit registers. A source element is defined with the IN
[24] OUT and OUT registers, and the target point with the IN register (when in target

mode).
A register is selected with the corresponding keys [IN] or [OUT], modifi­cations are possible either with [CAPT], the control wheel, or the numeric
keypad.

[25] SOURCE After selecting [SOURCE], all edit operations related to a source element

are enabled (cut, erase).

[26] TARGET After selecting [TARGET], the source element may be inserted at the

target point with [INSERT].

[27] CUT Cuts out the source element.

[28] ERASE Erases the contents of the source element.

[29] INSERT Inserts the source element at the position defined with the target IN point.

[30] UNDO The D424 reverts to the status before the last editing process.

[31] PREVIEW In editing modes (source or target LED on), [PREVIEW] followed by a

second key allows to preview either the edit points (with [IN] or [OUT]),
the selected element (with [SOURCE]), or an edit process (with [CUT],
[ERASE], or [INSERT]).
When not in edit mode, the [PREVIEW] key is used as rehearse mode
selector and indication for insert recording.

2.4 Keyboard and Register Section

[32] 0...9, CLR, +/–, ENT Register and menu parameters can be set with the numeric keypad. Values

that were entered in the display buffer are stored to the register with the

[ENT] key. With [CLR] the display buffer is cleared.

[33] CAPT Copies the current position to the register selected with the numeric key-

pad.

[34] REG With this key and a subsequent register number (0...9), one of the available

registers is selected. It can be set and used for locating or editing.

[35] TAKE This key is used for directly addressing takes for locating, or for setting

and clearing take markers (in combination with [INSERT] and [ERASE]).

Date printed: 22.02.02 SW V 1.6 Operating Elements E2/3

D424 MO Recorder

[36] IND This key is used for directly addressing index positions within takes when

locating, or for setting and clearing index markers (in combination with
[INSERT] and [ERASE]).

2.5 Display and Menu Section

[37] SETUP Pressing [SETUP] toggles between standard and SETUP mode, which is a

menu-structured display mode for setting the D424's configuration and pa­rameters, and performing system utilities.
Submenus and items are selected with the cursor keys [39]...[42], the con­trol wheel with [ENT], or directly with the numeric keys [1]...[8].

[38] SEQ With [SEQ] the sequence editing mode is entered. It allows defining and

editing sequences and deleting sound files (also refer to the Sequence ed­iting section).

[39] TIME FORMAT / tttt In standard mode, the current position may be switched between absolute,

relative, or timecode formats.
In setup and sequence editing modes the key is used as cursor key.

Note: On the Desktop Controller, these two functions have dedicated keys.

[40] TAKE FORMAT / uuuu In standard mode, the current take number can be shown with or without

index markers. If index markers are indicated as well, all skip functions are
referring to both markers instead of take markers only.
In setup and sequence editing modes the key is used as cursor key.

Note: On the Desktop Controller, these two functions have dedicated keys.

[41] z, [42] i Cursor keys, used in setup and sequence editing modes.

[43] Display The display section consists of 4 lines with 20 digits each. Depending on

the selected mode, there are different configurations. The standard con­figuration is:

Line 1: Graphical indication of the current position within the sequence
Line 2: Current take (and index) number, current position
Line 3: Sequence number, remaining time, or register entry field
Line 4: D424 configuration (sampling frequency, word length, input, clock source,

recording mode, emphasis).

2.6 Additional Functions (Desktop Controller only)

[44] UNIT 1...3 For assigning one of up to three D424 units to the Desktop Controller.

[45] VOL1, VOL2 For modifying the analog input attenuation for the two channels together

with the control wheel.

[46] INST LOCK Locks the unit immediately to a master timecode at the current position;

the current offset is stored to the nominal offset register. Chase mode is
selected automatically.

[47] SLOW Reduces the cue speed to one third of the standard cue speed.

E2/4 Operating Elements SW V 1.6 Date printed: 22.02.02

3 GETTING STARTED QUICKLY

3.1 Recording New Takes From an Analog Source

3.1.1 Installation and Settings

1. Connect the analog outputs of the source unit to the analog input connec­tors of the D424 (LINE IN 1/2) with XLR cables.

2. Insert a write-enabled disk with sufficient free recording space (see step 7).

3. Check the status of the D424 in the fourth display line. There, sampling

rate, recording format, clock reference, audio input, and recording mode
are indicated.
The standard setting is: 441, 16, INT, ANA, ST.
If necessary, change the settings for sampling rate, recording format, and
recording mode. The clock reference may also be external.

Note: There is only one sampling rate allowed per disk side. Changing the fre-

quency is only possible with an empty disk.

D424 MO Recorder

4. Recording mode should be set to ASS (LED above the REC button), which

5. Check the input levels by switching the D424 to input with [INP1] and

Example: Set the input attenuation of both channels to –6 dB:

3.1.2 Start Recording

6. Set the recording channels to READY by pressing [RDY1] and [RDY2]

7. Check the remaining recording time with [REC+STOP]. The remaining

8. Start recording with [REC+PLAY].

9. It is possible to set the take and the index markers on-the-fly with

10. Stop the recording session with [STOP].

is the default setting after switching on the D424.

[INP2].
Apply the input signals and check that there is no overload (red LED) at
the loudest position. The input signal attenuation may be adjusted in the
setup menu 31.

[SETUP] [3] [1] [6] [0] [ENT] [uuuu] [6] [0] [ENT] [SETUP]

(both corresponding LEDs will be on).

time is indicated in the display.

[TAKE+INSERT] or [IND+INSERT].

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/1

D424 MO Recorder

3.2 Recording New Takes From a Digital Source

3.2.1 Installation and Settings

1. Connect the AES/EBU output of the source unit to the AES/EBU input
connector of the D424 (AES/EBU IN) with an XLR cable.

2. Insert a write-enabled disk with sufficient free recording space (see step 6).

3. Check the status of the D424 in the forth line of the display. It indicates

sampling rate, recording format, clock reference, audio input and recording
mode.
The standard setting is: 441, 16, INT, ANA, ST.
If necessary, change the settings for sampling rate, recording format, and
recording mode.
Switch the input to AES/EBU with:
[SETUP] [2] [1],
select “dig” with: [uuuu] [ENT] [zzzz] [uuuu] [iiii],
select “audio” with: [uuuu] [ENT] [SETUP].

Notes: There is only one sampling rate allowed per disk side. Changing the fre-

4. The recording mode should be set to ASS (LED above the REC button),

3.2.2 Start Recording

5. Set the recording channels to READY by pressing [RDY1] and [RDY2]

6. It is now possible to check the remaining time with [REC+STOP]. The

7. Start recording with [REC+PLAY].

8. It is possible to set the take and the index markers on-the-fly with

9. Stop the recording session with [STOP].

quency is only possible with an empty disk.
An error message will appear when the D424 settings do not match with
the source signals.

which is the default setting after switching on the D424.

(both corresponding LEDs will be on).

remaining recording time is indicated in the display.

[TAKE+INSERT] or [IND+INSERT].

E3/2 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.3 Playing Pre-Recorded Disks

3.3.1 Installation and Settings

• Check that the D424 is either set to internal reference, or the correspond­ing external reference clock has to be provided. With an external clock, the
DIG indication in the bottom line of the display must not flash:
441, 16, INT, DIG, ST.

• Be sure that the INP switches are not activated.

• Insert a disk and wait until the sequence data have been loaded from disk.

3.3.2 Position

Take and index numbers as well as the current position are shown in the
display. The position indication may be adapted with the following keys:

[TIME] switches between absolute time (a: sequence time, starting with 0), relative

time (r: take time, time within take) or timecode position (t). If no time­code was recorded, the timecode display is identical with the absolute time
indication, the “t” mark is flashing.

[TAKE] switches between take display, or take and index display.

D424 MO Recorder

3.3.3 PLAY and STOP

Start playing with [PLAY], stop at the current position with [STOP].

3.3.4 Skip to Take and Index Markers

With [PREV] and [NEXT], the D424 will locate or continue playing at
the next or previous marker. Depending on the selected TAKE mode, only
take markers or take and index markers are considered.

Example: When playing take 5 and pressing [NEXT] twice, the D424 will continue

playing at the beginning of take 7.
Use the LOCATE function to access markers directly.

3.3.5 CUE and SHUTTLE

With [CUE], either the CUE or SHUTTLE mode is selected. Subsequent
keystrokes toggle between the two modes.
In CUE mode, the D424 follows the control wheel position with a speed
up to 2 times nominal speed. In SHUTTLE mode, the D424 moves with a
constant speed set with the control wheel.

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/3

D424 MO Recorder

3.3.6 LOCATE

Find a particular position in a sequence with the locate function. Locating
is available to sequence, take, and index positions as well as to register lo­cations having been set in advance.

Examples:

[LOC] [PREV] – locate to begin of sequence
[LOC] [NEXT] – locate to end of sequence
[LOC] [2] [STOP] – stop at take 2
[LOC] [2] [PLAY] – play from take 2
[LOC] [2] [ENT] – locate to take 2
[LOC] [2] [IND] [3] [PLAY] – play from take 2 index 3
[LOC] [IN] – locate to IN register
[LOC] [REG] [3] – locate to register 3.

When not terminated with [STOP] or [PLAY], the recorder will continue
in the same status as it was before (stop or play).

3.3.7 Setting Markers

Notes: Newly inserted take markers will get the first available free number, and

Set and remove markers with the following keystrokes:

[TAKE+INSERT] – inserts a new take marker
[INDEX+INSERT] – inserts a new index marker
[TAKE+ERASE] – removes the take marker that is currently displayed
[INDEX+ERASE] – removes the index marker that is currently displayed.

Moving a marker is achieved by removing it at the old position and in­serting it at the new place.

will keep it during further editing.
When moving a take marker with [ERASE] followed by [INSERT], it will
keep its number.
Index numbers are always contiguous within a take. After inserting or re­moving index markers, they will be renumbered automatically.

E3/4 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.4 Editing

3.4.1 Before You Start Editing

• Verify that there is a write-enabled disk inserted.

• The sequence currently selected will be modified. If you have already ed­ited a part of the sequence and you would like to keep the current version,
start editing with a copy of the sequence.

• The current setting of the cross-fade time (setup menu item 34) will be
used by all editing processes. Change them if necessary.

3.4.2 Cut Out or Erase an Element – Cut/Erase Editing

For cutting out or erasing an element of the current sequence:

• Define a source element by setting the edit registers [IN] and [OUT],

and perform an [INSERT] command.
With larger productions, it is helpful to mark the points to be edited in
advance. For this purpose, set index markers either during the recording or
when pre-listening the material.

1. Switch on the source editing mode with [SOURCE].

2. Find the element to be removed and copy the start point of the element to

the IN register, the end point to the OUT register. There are different
ways:

• Listen to the sequence and mark begin and end of the element with

[IN] [CAPT] [OUT] [CAPT], or

• locate to the points when there are already markers and change to CUE

for precise positioning. Transfer the current address to the register with

[IN] [CAPT], or [OUT] [CAPT], or

• search the point with the control wheel in SHTL mode (adjust the

maximum wind speed in the setup menu 41, if necessary), slow down

and change to CUE for precise positioning. Transfer the current address

to the register with

[IN] [CAPT] or [OUT] [CAPT].

3. Check the settings with the REHEARSE feature. De-select the edit regis-

ters and choose one of the following rehearse commands:

[PREVIEW] [IN] – listen to the section before the IN point
[PREVIEW] [OUT] – listen to the section after the OUT point
[PREVIEW] [SOURCE] – listen to the selected element between IN and

OUT

[PREVIEW] [CUT] – rehearse the cut command
[PREVIEW] [ERASE] – rehearse the erase command.

4. Modify the edit points if necessary and check again (item 3).

You can either locate to the edit point and adjust it:
[LOC] [IN] [CUE]...[IN] [CAPT], or
Trim the edit register directly with the cursor keys: [IN] [iiii] [zzzz].
Use the [SOURCE] and [TARGET] keys for accessing either the source
registers IN and OUT, or the target register IN.

5. If the settings are correct, the final cut or erase command is [CUT] or
[ERASE].

D424 MO Recorder

If the result of the command is not what you expected it to be, or if a
wrong edit command was executed by accident, it can be made undone
with [UNDO].

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/5

D424 MO Recorder

3.4.3 Move or Duplicate an Element – Insert Editing

For moving or duplicating an element of the current sequence:

• define a source element to be moved or duplicated, by setting the edit
registers SOURCE IN and OUT,

• set the target location (i.e., where the source element should be in­serted) by setting the edit register TARGET IN,

• and perform an INSERT command.

With larger productions, it is helpful to mark the points to be edited in
advance. For this purpose, set index markers either during the recording or
when pre-listening the material.

1. Activate the source editing mode with [SOURCE].

2. Find the element to be removed, copy the start point of the element to the

source IN register, and the end point to the source OUT register. There are
different ways:

• Listen to the sequence and mark begin and end of the element with
[IN] [CAPT] [OUT] [CAPT], or

• locate to the points if there are already markers, and change to CUE for
precise positioning. Transfer the current address to the register with
[IN] [CAPT] or [OUT] [CAPT], or

• search the point with SHUTTLE (adjust the maximum wind speed in
the setup menu 41, if necessary), slow down, and change to CUE for
precise positioning. Transfer the current address to the register with

[IN] [CAPT] or [OUT] [CAPT].

3. Activate the target editing mode with [TARGET].

4. Find the location to insert the source element defined above. Use one of

the methods described in item 2, and copy the position to the TARGET IN
point with [IN] [CAPT].

5. Check the settings with the REHEARSE feature. De-select the edit regis­ters and choose one of the following rehearse commands:

[PREVIEW] [IN] – listen to the section before the insert point,
[PREVIEW] [OUT] – listen to the section after the insert point,
[PREVIEW] [INSERT] – rehearse the insert command.

For adjusting the source element, simply switch to source editing mode
with [SOURCE] and use the corresponding preview commands ([IN]

[OUT] [SOURCE]).

6. Modify the edit points if necessary and check again (item 3).

You can either locate to the edit point and adjust it:
[LOC] [IN] [CUE]...[IN] [CAPT],
or
trim the edit register directly with the cursor keys: [IN] [iiii] [zzzz].
Use the [SOURCE] and [TARGET] keys for accessing either the source
registers IN and OUT, or the target register IN.

7. If the settings are correct, the final insert command is [INSERT].

Repeat from step 3 if you like to insert the source element to different lo­cations.
Moving an element is achieved by copying it to the destination first and
then cutting out the original source element. Simply press [CUT] after the
last [INSERT] command.
If the result of the command is not what you expected it to be, or if a
wrong edit command was executed by accident, the last command can be
made undone with [UNDO] (single level undo).

E3/6 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.5 Insert Recording

Use insert recording for directly replacing a part of the current sequence in
a “destructive way” . A typical example is dialog replacement.

3.5.1 Before You Start Recording

• Check your system configuration (refer to the analog or digital recording
sections).

• With a correct setup, no LEDs should be flashing. After switching to input
with the INP keys, you can monitor your source signal.

• You can check the free space available for recording with [RDY]
[REC+STOP]. Press [STOP] again to revert to standby.

3.5.2 Manual Insert Recording

D424 MO Recorder

1. Select the INSERT recording mode with the recording mode key (above
the STOP key). The “INS” LED will be on.

2. Set the recording channels to READY by pressing [RDY1] [RDY2] (the
corresponding LEDs will be on).

3. Start playing ahead of the section to be replaced, wait until the correct
position is reached, and then make record punch-in with a [REC+PLAY]
command, or
park the D424 at the punch-in location and start recording with

[REC+PLAY].

4. Perform a punch-out with [PLAY] or [STOP].

Note: After having tried replacing a section for several times, all these attempts

will be stored on the disk. They can be made accessible when creating a
new sequence from the complete table of contents.

3.5.3 Auto Insert Recording

1. Select the AUTO recording mode with the recording mode key (above the
STOP key). The “AUT” LED will be on.

2. Store the beginning and the end of the section to be replaced to the edit
registers; IN: punch-in point, OUT: punch-out point.

3. Set the recording channels to READY by pressing [RDY1] and [RDY2]
(the corresponding LEDs will be on).

4. Use the [PREVIEW] key to either perform a rehearsal (PREVIEW LED is
on) or a recording (PREVIEW LED is off).

5. Start with [REC+PLAY].
The D424 will start at IN-PREROLL, automatically perform a punch-in at
the IN point and a punch-out at the OUT point. It will stop at
OUT+POSTROLL.
During the process, the current mode as well as a countdown to the fol­lowing event are indicated.

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/7

D424 MO Recorder

3.6 Working with Sequences

There may be several sequences on a disk. Only one of them can be se­lected as the current sequence.
All modifications resulting from editing or sequence processing only
change the sequence data that are kept with each sequence. They do not
modify or delete the audio information.
The [SEQ] key gives access to a number of features, which allow to:

• switch between the available sequences on a disk,

• create new, empty sequences,

• modify sequences by inserting or deleting single takes,

• delete complete sequences, or

• copy existing sequences.

3.6.1 Change the Current Sequence

If there is a sequence no. 2 available on the disk, it is selected with [SEQ]
[2] [ENT].

3.6.2 Create a New Sequence

A new, empty sequence is created with [SEQ] [ENT].

If it is necessary to assign a specific number to the new sequence, the new
number is added to the command. If there are 3 sequences on a disk, and
the following numbers should be reserved for additional revisions, a new
sequence no. 10 is created with [SEQ] [10] [ENT].

3.6.3 Modify a Sequence

When modifying a sequence, single takes can be added or deleted.

Entering sequence editing mode: For entering the sequence editing mode, the following parameters are nec-

essary:

• a source sequence number (i.e. the number of the sequence where the
takes are to be copied from).

• a target sequence number (i.e. the sequence to be modified), and
[SEQ] [n] [SOURCE] – modify sequence “n” ; the default source
sequence is the table of contents of the disk.
[SEQ] [n] [uuuu] [s] [SOURCE] – modify sequence “n” , with source
sequence “s” .

In editing mode, both source and target sequences are displayed. After
having selected one of them with the [SOURCE] or the [TARGET] key,
the take positions can be entered for executing the functions “add addi­tional takes”, and “ delete takes” described below.

E3/8 Quick Start Guide SW V 1.6 Date printed: 22.02.02

Adding additional takes: Select the take to be copied from the source sequence, and the insert posi-

Deleting takes: Specify the target take to be deleted:

3.6.4 Copy a Sequence

D424 MO Recorder

tion in the target sequence:
[3] [TARGET] [5] [INSERT] – Insert take 3 from the source sequence,
after take 5;
[INSERT] [INSERT], ... – further INSERT commands will copy takes 4,
5, and so on.

[TARGET] [4] [CUT] – delete take 4 from the target sequence;
[CUT] [CUT], ... – further CUT commands will delete take 3, 2, and so

on.

For copying an existing sequence, enter editing mode and perform a
TARGET+INSERT command:
[SEQ] [uuuu] [2] [SOURCE] [TARGET+INSERT] – create a new se-
quence as a copy of sequence 2.

Note: If the [TARGET+INSERT] command is applied to a non-empty se-

quence, the current data are overwritten by the copied sequence data.

3.6.5 Delete a Sequence

For deleting a sequence, enter the editing mode and perform a

[TARGET+CUT] command:
[SEQ] [2] [SOURCE] [TARGET+CUT] – delete sequence 2.

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/9

D424 MO Recorder

3.7 CD Transfer and Disk Copies

For making transfers and backup copies between the D424 and external
drives such as further MO disk drives or CD writers, establish a SCSI con­nection between the two devices.

3.7.1 Before You Start the Transfer

• Switch the two units off and connect the SCSI cable.

• Make sure that the two units have not the same SCSI address. The default
address of a D424 is “1” , the one of the Studer D741 is “ 2” . Refer to the
corresponding section in the operating manual of the device for changing
SCSI addresses.

• Switch on the peripheral device first, and switch it to SCSI mode (Studer
D741: SCSI ON, D424: SCSI offline mode).

• Switch on the D424.

3.7.2 Creating a CD with an External SCSI CD Writer (e.g. Studer D741)

When making a master copy of the current D424 sequence to an external
CD writer, the audio information including all track and index markers
will be transferred to the CD. Furthermore, PQ information like ISRC and
UPC codes can be added.

Note: Only sequences recorded with 44.1 kHz sampling rate can be directly

transferred to the CD recorder.

• Insert a CD-R. Use an empty disc if you intend to burn a CD in a disc-at­once operation.

Entering UPC and ISRC Codes Select the UPC menu 642, enter the UPC code, and confirm with [ENT].

An UPC code will be accepted only if no UPC code has been programmed
yet.
Select the ISRC menu 643 and enter a code for each track. Set the se­quence to the first track and enter the code for track 1. For skipping the
track number, use the [NEXT] key, and update the display with [zzzz] [iiii].

Note: The first group of the ISRC code requires alphanumeric entries. Start with

the [iiii] key, select the digit with the control wheel and go on to the next
digit with the [uuuu] key.

Set the CD Transfer Parameters Use the standard setting for transferring a 16 bit sequence to a new, empty

CD. No additional processing is done (no noise shaping, no additional
pauses will be inserted). Refer to “Operation” , section 4, for details.

Start the Transfer Select the master copy menu 62. If the “CD mounted” message is not visi-

ble, the CD writer has to be selected as target drive first:

• Select the “target” submenu and select the CD drive as target drive (use
the [tttt] or [uuuu] keys to locate one of the items, the [iiii] key to select items
or to enter submenus, or the [zzzz] key to return to the previous menu).

• Start the transfer process by moving to the “ start” item and confirming
with [ENT].
During the whole process, a progress bar is revealed. After a successful
transfer, the disc will be finalized. Usually, the CD writer (e.g. Studer
D741) will open its disc tray.

E3/10 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.7.3 Copying a CD to the D424

The contents of a CD can be copied to a new sequence on the D424 disk,
including all track and index markers.

• Check the inserted disk: it should not be write protected, have sufficient
free capacity for adding the CD information, and the format must be CD
compatible (44.1 kHz sampling rate).

• Select the CD writer as the current source drive. Use the setup menu 51 for
this purpose; the CD drive usually has the SCSI address 2.

• If the copy mode in menu 644 is set to “toc” , the complete CD will be
transferred; if it is set to “add” , only the currently selected track will be
copied.
Use the D424 transport keys for pre-listening and selecting CD tracks.

• Select the master copy menu 62 and enter the “target” submenu to select
the MO disk as target drive, the internal SCSI address is usually 1 (use the
[tttt] or [uuuu] keys to locate one of the items, the [iiii] key to select items or to
enter submenus, or the [zzzz] key to return to the previous menu).

• Start the transfer process by moving to the “ start” item and confirming
with [ENT].
During the whole process, a progress bar is revealed. After a successful
transfer, the display reverts to standard mode.

D424 MO Recorder

3.7.4 Copying to/from Other MO Disks

Sequences and complete disks can be copied from the internal drive to
additional external drives. There are 3 possible choices:

DISK COPY will copy the complete disk. The target disk has to be empty. Reformat it

before, if necessary (setup utility 53).

MASTER COPY will create a new sequence on the target disk as an exact copy of the

source sequence, including track and index information. The audio infor­mation will be merged into a new single sound file.

WORK COPY will create a new sequence on the target disk. It is identical with the

source, and includes all sequence information. All sound files used by the
sequence will be transferred as well.

• Check the target disk. It must not be write protected, have enough free
capacity for adding the source information, and the sampling rate of both
disks must be identical.

• Use the setup menu 51 to check if:
the internal drive is currently selected as the active one, and
the external drive appears on the drive list.

• Go to one of the copy menus (Work Copy 61, Master Copy 62, Disk Copy

63) and check the indicated transfer information “copying sequence/track i
to drive m”)

• Modify the target address if necessary (submenu target).

• Start the transfer process by moving to the “ start” item and confirming
with [ENT].
During the whole process, a progress bar is revealed. After a successful
transfer, the display reverts to standard mode.

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/11

D424 MO Recorder

3.8 Working with Timecode

The D424 provides an LTC timecode input that allows to record LTC
timecode. When playing back a sequence consisting of takes with different
timecode positions, the D424 will provide a contiguous timecode defined
by the first take.

3.8.1 Recording Timecode

• Check for correct timecode wiring by selecting [INP TC]. The incoming
code should be displayed.

• When recording timecode, be sure that the timecode source and the D424
are running synchronously. The usual way is to provide a common video
reference signal.

• Enable timecode recording with [TC RDY]. When the corresponding LED
is on, the timecode position will be added to the audio information of all
subsequent recording sessions.

Notes: The timecode information will be recorded as a single TC stamp at the

beginning of an audio file. Timecode jumps during recording will not be
considered.

Timecode can be recorded only together with audio channel(s) set to
ready.

3.8.2 Playing Back Timecode

The D424 always provides the current position at the TC output connector.
If no timecode was recorded, the absolute position is present. During
STOP or CUE, a stationary code is generated.

3.8.3 Chasing to Timecode

In chase mode, the recorder is following an external timecode.

• When chasing to a master timecode, make sure that the master and the
D424 are running with the same reference clock. Both master and D424
must be configured to the same timecode format.

• Start/stop the chase mode with [CHASE].

Chase LED is On: Chase mode is on, D424 runs synchronously in PLAY mode.

Chase LED is Flashing: Chase mode is on, but D424 waits because the master is not in PLAY

mode (STOP or fast forward/rewind).

• An offset can be applied by storing a value (±12 hours) into the nominal
offset register. It is accessed with [REG] [0].

• An “instant lock” command will lock the D424 at the current position by
storing the current offset to the nominal offset register and launching the
chase mode. The command is performed with [LOC+CHASE] or with the
[INST LOCK] key of the desktop controller.

E3/12 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.9 The Desktop Controller

The Desktop Controller may be used to control up to 3 recorders with an
ergonomic user interface.

3.9.1 Installation and Settings

1. Use the controller cable to connect the desktop controller to one of the two
controller ports at the rear side of the D424. Connect further units with
separate sync cables. The second connector of the last recorder must be
terminated (termination plug).

D424 MO Recorder

D424 D424 D424

Desktop

Controller

2. Check the addresses of the connected units in setup menu 15. Each D424
should have a unique address.

3.9.2 Operation Enhancements

Desktop controller operation of a D424 is the same as front panel opera­tion, except for the following enhancements:

1. The controller is activated by selecting one of the connected units, using
the keys [UNIT1], [UNIT2], or [UNIT 3]. The D424 will indicate remote
operation by a message in its local display. Press an other [UNIT ...] key
(or the active one again) for de-selecting the recorder being active.

2. Setting the input attenuation of the analog input signal is easier. Instead of
selecting the menu item 31, simply hold down the [VOL1] or [VOL2] key
and modify the level with the control wheel.

3. There are two different resolutions for the CUE mode. With the [SLOW]
key, the CUE speed is one third of the standard speed for more precise lo­cating.

4. The mode keys for switching the take/index format and the time format are
now separated ([tttt] and [uuuu] at the front panel).

5. The [LOC] key is closer to the destination keys ([IN] [OUT] [0...9]) and
it has the same size as the other main transport keys.

6. To the left of the [CHASE] key, there is a separate key for the [INSTANT
LOCK] function.

Termination

Sync cable Sync cableController cable

plug

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/13

D424 MO Recorder

3.10 The Parallel Port with Fader Start Operation

A parallel remote port is provided for basic transport control and status
indication, a fader start circuit, and supply voltages for external circuits.

3.10.1 Signal List

Inputs

4 S_STOP Generates a Stop command
5 S_PLAY Generates a Play command

6 S_PLOC Generates a Locate command to the last Play position (PlayLoc)
12 S_PREV Generates a Previous command, skip to the previous take/index
13 S_NEXT Generates a Next command, skip to the next take/index

7 FADER1
14 FADER2

Outputs

1 B_TAKE Take pulse, when passing a take marker in Play

2 B_INDEX Index pulse, when passing an index marker in Play

9 B–STOP Stop tally

3 B_PLAY Play tally
10 B–READY Ready for fader start operation

Others

8 GND Signal ground
11 VCC Supply voltage (5 or 24 VDC)
15 KEY

Fader start contacts

3.10.2 Fader Start

The D424 provides an opto-coupler input (with internal bridge rectifier
and 20 mA current sink) for fader start operation. Use either an external
voltage source of 5...24 VDC, or use the internal supply voltage. The po­larity of the external supply voltage is of no importance.

D424

FAD1

FAD2

D424

FAD1
FAD2

GND
VCC

D424

FAD1
FAD2

GND

VCC

• Enable fader start operation with setup menu 45.

• When applying a control voltage at the fader input pins, the D424 will
start, releasing the control signal will result in a STOP.

Note: During fader play operation, the local keyboard is disabled.

E3/14 Quick Start Guide SW V 1.6 Date printed: 22.02.02

3.11 The Setup Menu

D424 MO Recorder

The [SETUP] command is used for entering the setup mode, in order to
change parameters and to perform a number of utilities.
Navigation within a menu is done numerically or with the cursor keys:

[SETUP] [3] [1] – opens setup menu 31;
[tttt] and [uuuu] – move to an item within a setup level (or control wheel);
[zzzz] and [iiii] – go to the previous/next level or activate an item. [ENT] is

an alternative to [iiii].
For more detailed information on the setup menu see chapter 4.10 .

Menu Item Display Meaning Parameters

1 CONFIG System configuration

11 S.FREQ Sampling frequency 44.056, 44.1, 47.952, 48 kHz
12 S.WORD Sample resolution 16, 20, 24, 24L bits
13 TC Timecode format 24, 25, 29.97DF, 30, NONSTD
14 RECMODE Record mode stereo, mono
15 UNIT Unit selection unit1, unit2, unit3
16 DEFAULT Configuration

161 RECALL Recall User, PowerOn, Factory
162 STORE Save curr. config to user setting cancel, yes

17 REMOTE Remote local, remote

2 REF & INP Reference & input parameters

21 CLK SRC Ref. clock source int, dig, video
22 DIG REF Digital reference sync, wclock, audio
23 INPUT Audio input dig, analog, option

3 AUDIO Audio parameters

31 INP LEV Analog input attenuator inp1, inp2 (0...–14 dB)
32 OUT LEV Analog output level level (0...3)
33 DIG LEV Digital playback level channel1, channel2, (–12..+6 dB)
34 XFADE Crossfade time (0...2000) ms
35 METER Meter mode peak, peak hold

4 TRANSPORT Transport & display parameters

41 MAXSPD Maximum wind speed (2...30) × nominal speed
42 VARISPD Play varispeed off, on (±12.5%)
43 AUTO Auto stop off, on
44 PRE/POST Preroll/postroll (2...40) s
45 FADER Fader start1 disabled, enabled
46 REMAIN Remaining time mode auto, ind, take, seq
47 DISP RES Display resolution frames, ms

5 DISK Disk & sequence utilities

51 SELECT Select disk drive (1...6)
52 SCSI SCSI offline yes, no
53 FORMAT Format disk # ? cancel, yes
54 CLEANUP Cleanup disk # ? cancel, yes
55 REN-SEQ Renumber sequence ## ) cancel, yes
56 CLR-IND Clear all indices of sequence cancel, yes
57 DEL-FILE Delete sound file DESTRUCTIVE Seq #, take #; cancel, yes

6 COPY Copy utilities

61 WORK Work copy seq ## to drv # target, start
62 MASTER Master copy seq ## to drv # target, start
63 DISK Copy disk # to drv # target, start
64 XFER PAR Transfer parameters

641 SHAPING Noise shaping off, on
642 UPC/EAN UPC/EAN code 1234 1234 12345
643 ISRC ISRC code, track ## abcde 1234567
644 CD MODE CD copy mode toc, multi, add, fix
645 DELAY CD track delay off, on
646 INDEX 0 Index 0 duration off, on (2...5) s

65 FIXUP Fixup disk # ? (for SADiE exchg.) cancel, yes

7 SERVICE Service utilities

71 FORMAT Format disk # ? (up to 40 min!) cancel, yes
72 DATE Date & time day.month year hours:min

Date printed: 22.02.02 SW V 1.6 Quick Start Guide E3/15

4 OPERATION

4.1 System Configuration

There is a number of configuration parameters in the D424 that are stored
either in a battery-buffered RAM or on the disk. The default values of the
D424 have been chosen for easy and safe operation.
After switching on the D424 for the first time, or after restoring the factory
default values, the D424 is ready to be operated and to record from analog
sources.

4.1.1 Recording Formats

Before starting a new recording session, check the current status in the
display.

D424 MO Recorder

The parameters can be modified in the following setup menus:

• Menu 11: Sampling rate

• Menu 12: Sample word length

• Menu 14: Recording mode

Notes: It is possible to have different recording modes and sample word lengths in

a single sequence. There are no restrictions in editing and transferring.
However, only one sampling frequency is allowed per disk side. An error
message will appear if the sampling frequency does not match with the
format already existing on the disk.
The emphasis status a digital recording is stored to the disk together with
the audio information. The status of the first take determines the status of a
sequence. A warning will be displayed if subsequent recordings do not
match with the emphasis status of the current sequence.

Date printed: 06.03.02 SW V 1.6 Operation 4/1

D424 MO Recorder

4.1.2 Audio Input

The input source is selected with the setup menu 23. Select “ dig” for re­cording digital signals connected to the AES/EBU input, or “ analog” for
recording analog line signals at the LINE IN connectors.

Notes: The D424 has to be equipped with the analog I/O option for analog re-

cording and playback.
Check the correct synchronization of digital sources and the D424 if re­cording digital audio. Both the source machine and the D424 have to be
locked to the same reference (see the following section).

4.1.3 Reference Clock Source

The currently selected clock source is also shown in the display status line.
In case of an external reference, the presence of a correct signal is indi­cated by a non-flashing clock source indication (INT, VID or DIG).

Selecting the Correct Reference There are the following settings for the D424 clock synchronization:

Mode Setup menu 21 Setup menu 22 Reference input

Internal int - -

Video video - VIDEO

Digital, AES-11 ref. dig sync AES/EBU SYNC

Digital, AES-3 audio input dig audio AES/EBU IN

Digital, word clock dig wclock WORDCKLOCK IN

• If the D424 is used in a analog environment, select the Internal Mode.

• If one or few digital machines are connected for playback or recording,
and the peripherals can be locked to one of the D424's sync signals (Word
Clock or Digital Audio) select the Internal Mode.

• If the other machines do not accept the D424's sync signals, connect one of
the peripheral's sync signal to the D424, and select the corresponding
Digital Mode.

Note: Be sure that the master machine is always switched on when operating the

D424, and that it provides the reference signal in all conditions.

E4/2 Operation SW V 1. 6 Date printed: 06.03.02

• If the D424 is integrated into a system with video and digital audio equip-

• If a common high quality reference is available in a digital environment,

4.1.4 Other Parameters

• remote operation

• storing user defaults

• timecode and display formats

• audio levels and editing parameters

• transport parameters.

D424 MO Recorder

ment, use a stable composite video reference as master for all machines.
Switch the D424 to Video Mode.

use the corresponding Digital Mode. AES-11 and Word Clock are pre­ferred.

There is a number of general parameters for

They are accessible in the setup menu. Refer to the corresponding manual
section for more details, or find a complete list of parameters and utilities
in the setup menu section.

Date printed: 06.03.02 SW V 1.6 Operation 4/3

D424 MO Recorder

4.2 Display and Register Functions

4.2.1 Display Information and Formats

The standard display shows various information on 4 lines.

Line 1 • The position indicator at the top of the display is indicating the current

position, relative to the selected sequence. It allows to see roughly where
the recorder is, when controlling it with the transport commands.

Line 2 • The current take and index.

Use the [TAKE] key to display either the take only, or take and indices.

• The selected time mode.
Use the [TIME] key to display the current time in one of the following
formats:

“a” Absolute time

“r” Relative time to take begin or last index marker

“t” Timecode.

• The current time.
The time field is showing the current position in hours, minutes, seconds
and frames or milliseconds. Select either frames or milliseconds as display
resolution with setup menu 47.

Line 3 • The currently selected sequence

• Following the “ rem” indication, the field at the right shows the remaining
time to one of the following points. Use setup item 46 to select:

- the next take or index marker, depending on the take format

- the next index marker

- the next take marker

- the end of the sequence.
The third line is also used for displaying alternative information. Depend­ing on the current mode, the following information may appear instead of
the remaining time:

“free” free recording time (during recording modes)

“to in”, “to out” countdown to IN or OUT point (during preview, auto record)

“var” current play varispeed (during varispeed operation)

“reg0”...“reg9” entry field for general purpose register (register editing)

“in”, “out” entry field for edit registers IN, OUT (register editing)

E4/4 Operation SW V 1. 6 Date printed: 06.03.02

D424 MO Recorder

Line 4 The bottom line indicates the status of the main configuration and the cur-

rent take parameters:

Sampling Rate 44D 441 48D 48

Sampling frequencies include 44.1 kHz (441), 48 kHz (48) as well as the
drop-frame formats 44.056 kHz (44D) and 47.952 kHz (48D).

Word Length 16 20 24

Word length allows 16, 20, and 24 bit recording.

Audio Input AES ANA (OPT)

Audio inputs are AES/EBU (AES), Analog (ANA) or further optional I/Os
(OPT). With an appropriate adapter, the AES input will also accept SPDIF
signals.

Clock Source INT VID DIG

The following clock sources may be selected: Internal (INT), video (VID),
and digital input (DIG). For detailed information see the System Configu­ration section.

Channel Configuration ST MON

Files are either recorded in stereo (ST) or mono (MON) mode.

Emphasis E

Digital signals with emphasis will result in a E status indication.

Time Format There are several sources for the current position within the sequence.

With [TI ME FORMAT] one of the following choices can be selected by
toggling through the menu.

TC Timecode mode: The position is displayed referring to the recorded time-

code. When a sequence consists of several takes with different timecode
positions, the sequence timecode is derived from the first take's address.
If no timecode was recorded at all, the absolute position is displayed in­stead, and the TC sign flashes.

ABS Absolute time mode: The absolute time position is displayed. It starts with

0 at the first recorded take and increases contiguously within the current
sequence.

REL Relative time mode: The relative position to the beginning of the current

take or the last index mark is displayed.

Take Format For displaying and accessing takes and indices, there are two different

modes, selected with [TAKE FORMAT]:

TAKE Only takes are displayed; all operations are performed in units of complete

takes or relative to take markers.

TAKE/INDEX Takes and indices are displayed, all operations are referring to take and

index markers (e.g. skip to next index marker with [NEXT]).

Date printed: 06.03.02 SW V 1.6 Operation 4/5

D424 MO Recorder

4.2.2 Using General Purpose Register s

There are several memory and editing registers that can be selected and
modified. After being selected, a register may be modified or cleared with
the numeric keypad, any changes are confirmed with the [ENT] key.

Selecting/Modifying a Register: The contents of any register appear in the display entry field if it has been

selected.

The edit registers (IN, OUT) may be addressed directly be pressing the
respective key; all others (0...9) are selected with the key sequence [REG]

[n], where n is one of the following registers:

reg0 Nominal offset register in chase mode,

reg1...9 General purpose registers, for use with the locator,

IN Edit IN register,

OUT Edit OUT register.

1. Typing in a new value with the numeric keys [0...9]. With the first key-

2. Resetting the field to 0 with [CLR].

3. Modifying the displayed value with the control wheel.

4. The current position is transferred to the selected register with [CAPT].

5. A register value can be incremented or decremented with the [uuuu] or [tttt]

Transferring Registers and Locations

There are several ways to change the displayed value in the entry field (or
the register contents):

stroke, the display is automatically cleared.

All these modifications do not directly affect the register contents. The
modified value is flashing, indicating that the entry field is different from
the register contents, until it is stored with [ENT].

keys by one display unit (ms or frame)

These two actions directly modify the register contents. Therefore, the
field will not be flashing, and no termination with [ENT] is necessary.

The register programming mode can be cancelled anytime by pressing the
initial select key [REG] [IN] or [OUT] once more. When terminating an
entry with the [ENT] key, the display also reverts to standard mode.

The contents of any other register may be transferred to a destination reg­ister by placing the machine to the desired position, and then transferring
the location to any other register:
[LOC] [REG] [2] [REG] [0] [CAPT] – stores the value in register 2 to
the nominal offset register.

E4/6 Operation SW V 1. 6 Date printed: 06.03.02

4.3 Basic Transport Operation

The following basic transport commands allow to navigate the D424 to
any point within the current sequence, and to playback audio files:

[PLAY] starts playback at the current position

[STOP] stops recorder at the current position
[PREV] moves to the previous take begin (or index marker)
[NEXT] moves to the next take begin (or index marker)

[LOC] moves to a predefined position

[SHTL] moves recorder forward or backward with a variable speed

[CUE] moves recorder forward or backward according to the control wheel posi-

tion.

D424 MO Recorder

For easy access to random positions, index and take markers can be
placed, moved, and erased. Two edit registers as well as nine general­purpose registers support efficient processing of editing and playback
tasks.

4.3.1 The Current Position

When playing back pre-recorded material, the operation is similar to a CD
player or an R-DAT recorder. There is a current position within the se­quence, defined in absolute time or timecode, from which the recorder can
immediately reproduce audio.

PHONES

LOC CHASE LOOP

PREV NEXT PLAY STOP REC

ASS

INS

AUT

CUE
SHTL

time scale

take 1 take 2 take 3

start of
sequence

Date printed: 06.03.02 SW V 1.6 Operation 4/7

take 4

end of

sequence

D424 MO Recorder

The current position within the sequence is indicated by a running indica­tor sign in the first line of the display. The far left position corresponds to
the sequence start, the far right to the sequence end.

The second line displays the current take (and index) with the position in
hours, minutes, seconds, and subdivisions.
The third line includes the current sequence number and the remaining
time.
There are various display formats that can be adapted to the user's needs
with a mode key or in the setup menu.

Take/Index Format: [TAKE] Selects between displaying only take numbers, or take and index numbers.
Time Mode: [TIME] Either the absolute, relative, or timecode position is displayed in line 2.
Remaining Time Mode: Menu 46 The remaining time is showing the time until the next “ take” or “ index”

marker, until the end of the current “ sequence” (in “auto” position, either
the next take or index marker is referenced, depending on the take/index
mode).

Display Resolution: Menu 47 ms (milliseconds) or frames.
Timecode Format: Menu 13 24, 25, 29.97 and 30 frames/second.
Time Display Modes: “a” is the absolute time. The contiguous time scale starts at the beginning of

the sequence.

“r” means relative time. It indicates the position within a take.

“t” is the timecode position. If no timecode was recorded, the absolute posi-

tion will be displayed with a flashing “t”.

Time scales
within a sequence:

a

t

r

Take: 1 2 3 4

E4/8 Operation SW V 1. 6 Date printed: 06.03.02

4.3.2 Playback and Stop

With [PLAY] the recorder starts to reproduce audio from the current posi­tion. At the end of the last take, the D424 stops automatically.
[STOP] causes the D424 to stop at the current position.

4.3.3 Skipping to Take and Index Markers

Similar to CD players, locating to the previous or to the next take begin­ning (take marker) is possible with [PREV] and [NEXT]. At the new des­tination, the D424 starts playing if it was in playback before the skip
command. Multiple commands are cumulated.
If track/index mode is selected, skipping refers to index markers instead of
take markers.

D424 MO Recorder

Take Mode

Take 1 Take 2 Take 3

1.1

1.2 1.3 2.3

4.3.4 The CUE and SHUTTLE Modes

With the [CUE/SHTL] key, the mode that was used last is entered. Each
subsequent keystroke toggles between CUE and SHTL mode.

Take 4

2.2 4.2

3.1

v = –1

4.12.1

v = 0

v = –2

v = ±max.

Take/Index Mode

v = 1

v = 2

CUE Mode

SHUTTLE Mode

In the CUE mode, the position of the D424 is directly coupled with the
control wheel. As with the reel of a tape recorder, a direct and precise tool
for audible positioning is provided. It allows to search for a particular po­sition by moving the D424 with the control wheel.
The SHTL mode allows to search for a particular position audibly by
moving the D424's position at a speed in the range of 0...±2 times nominal
speed. The speed is defined by the control wheel, the initial speed after
selecting the mode is 0.

Date printed: 06.03.02 SW V 1.6 Operation 4/9

D424 MO Recorder

[PLAY+NEXT] Fast forward mode,
[PLAY+PREV] Fast rewind mode.

LED Speed Indication:

fast wind forward

1...2 × v

nom

0...1 × v

nom

still

0...1 × v

nom

1...2 × v

nom

fast wind reverse

At the upper and lower limits of the control wheel range, a maximum
speed is applied (without audio output). This allows to “ wind” the re­corder to a target position, slowing down at the end, and positioning with
low speed SHTL or CUE.
The present speed is shown in the display area, the LEDs above the control
wheel indicate a rough speed overview.

As an alternative, full-speed shuttle mode is achieved with the following
wind key combinations:

Use [STOP] or [PLAY] key to leave the CUE/SHTL mode.

4.3.5 Locating to a Random Position

Locating to Take/Index Markers Any take or index position in e sequence can be addressed in a simple way

with the [LOC] key. The following keyboard entry is terminated either
with [ENT], with [STOP], or with [PLAY].

[LOC] [2] [PLAY] – will start playing at take no. 2
[LOC] [5] [ENT] – will park the D424 at the beginning of take no. 5

For accessing indices, simply add the index number:
[LOC] [7] [IND] [2] [PLAY] – will start playing at index no. 2 in take
no. 7
[LOC] [IND] [3] [PLAY] – will start playing at index no. 3 in the cur­rent take.

Locating to Memory Positions The D424 can be located to any position of the current sequence, if it has

previously been stored in one of the memory registers.
To perform a memory locate, the [LOC] key is pressed, followed by one
of the destinations indicated below:

[IN] Edit IN register

[OUT] Edit OUT register
[PREV] Start of sequence
[NEXT] End of sequence

[REG] [1...9] General-purpose register 1...9

Examples: [LOC] [IN] Locate to edit IN point

[LOC] [PREV] Locate to start of sequence

[LOC] [REG] [3] [ENT] Locate to REG 3

E4/10 Operation SW V 1.6 Date printed: 06.03.02

4.4 Recording

The D424 has been designed to offer the well-known recording techniques
from a tape recorder. But with a non-linear recording medium, new fea­tures in recording and editing become available. The D424 offers different
recording modes, each offering certain advantages and flexibility.

With the [ASS/INS/AUT] recording mode key, one of three recording
modes is selected (see below). The corresponding LED will indicate the
currently selected mode.

4.4.1 The D424 Recording Modes

Assemble Mode The assemble mode is similar to recording with a CD recorder. Every new

recorded take is simply added at the end of the sequence. The identifica­tion number is increased by one, the absolute time continues at the end of
the last take.
In the following example, there is a sequence with 3 takes, with the current
position in take 2.

D424 MO Recorder

ASS

INS

AUT

take 1 take 2 take 3

No matter where the current position is, recording one more take is simply
done with [REC+PLAY]. The sequence will then look as follows:

take 1 take 2 take 3 take 4

Insert Mode In insert mode, a destructive punch-in/-out is performed. The current data

will be overwritten. The insert mode is therefore similar to the recording
mode of a tape recorder.

take 1 take 2

When performing a recording in the example above at the indicated posi­tion, take 1 would be overwritten until the punch-out command. Index
markers are automatically placed at the punch-in and punch-out positions:

take 1

take 2

Take and index markers will be overwritten by new recorded elements.

take 1

The sequence length is automatically adjusted, if necessary:

take 1

Date printed: 06.03.02 SW V 1.6 Operation 4/11

D424 MO Recorder

Auto Insert Mode The auto insert mode is similar to the insert mode. But instead of manually

performing punch-in and punch-out commands, the record commands will
be precisely executed when passing the IN our OUT points. Both edit reg­isters are preset in advance.

IN

OUT

If at least one channel is set to READY, and a [REC] command is given,
the D424 will start ahead of the IN point. It will show a countdown to the
IN point, and a precise insert up to the OUT point is then performed auto­matically.

4.4.2 Channel Assignments

[RDY1] and [RDY2] are the record enable keys. The ready condition is
indicated by a flashing LED; during the recording process, this LED is
continuously on.
If recording in STEREO mode, the [RDY1] and [RDY2] keys are linked,
i.e. selecting one of them automatically activates both channels. In MONO
mode, either [RDY1] or [RDY2] is selectable.

STEREO ON ON Stereo recording (both channels linked)

MONO ON OFF Mono recording from input channel 1
MONO OFF ON Mono recording from input channel 2

take 1

RDY 1 RDY 2

take 2

Note: When playing mono recordings, the mono disk channel will be routed to

4.4.3 Rehearse Mode

both output channels.

[INP1] and [INP2] are assigning the source of the two audio outputs,
which can be the disk (INPUT LED off) or the selected input source
(INPUT LED on). During a recording process, the enabled channels are
automatically switched to INP for monitoring purposes, the INP LEDs are
then also switched on.

In both INSERT and AUTO INSERT modes, a rehearsal mode is avail­able. It is activated with the [PREVIEW] key.
With the rehearse mode switched on, an insert recording process behaves
exactly the same as a real recording, i.e. the monitor switches from disk to
input during the recording period, but no data will be stored to disk.

E4/12 Operation SW V 1.6 Date printed: 06.03.02

4.4.4 Meters

The meters either display in standard peak mode or in peak hold mode. In
the latter case, the peak value can be reset with [PEAK RESET] or
[STOP].

If the red overflow LED is on, a full scale digital value has been detected.
The highest green LED indicates a level between –1 and 0 dB.

4.4.5 Adjusting the Analog Input Level

For recording from an analog source, the input sensitivity can be adjusted.
For this purpose, the meters are switched to input either manually with the
[INP1] and [INP2] keys, or by pressing [REC+STOP] (record pause
mode).
The levels may then be modified in the setup menu 31.
With the Desktop Controller, there are separate keys for direct access to
the level setting menu. Simply keep [VOL1] or [VOL2] pressed, and set
the level with the control wheel.

D424 MO Recorder

Attenuation in setup menu [dB] 0.0 –0.5 –1.0 ... –13.0 –13.5 –14.0
Input sensitivity [dBu full scale] 10.0 10.5 11.0 ... 23.0 23.5 24.0

4.4.6 Before You Start Recording...

• Make sure that your system configuration is correct. All relevant data are
shown in the status line of the display.

• Once set, it should not be necessary to modify the general parameters,
because the remain stored when the D424 is switched off. In case of con­figuration errors indicated with a flashing status or an error message,
please refer to the system configuration or the troubleshooting sections.

• Insert a disk with the write-protect tab in “write” position.

• Set the D424 to Record Ready. The disk will then be asked for the number
of defective blocks, and a warning will appear if it is not in a safe range.

Date printed: 06.03.02 SW V 1.6 Operation 4/13

D424 MO Recorder

• You can see the available space for recording with a [REC+STOP] com-

mand. The top bar is an indication of the total recorded space, and the third
line shows the time available for recording.

• Please note that the free recording time depends on the selected format:
There is more recording time available with 16 bit resolution or with

44.1 kHz sampling rate, than with 24 bit resolution and/or 48 kHz sam­pling rate.

• Check the input level. The sensitivity of the analog input can be aligned to
match your standard studio levels.

4.4.7 Assemble Recording

4.4.8 Insert Recording

• Place the D424 to the beginning of the section to be replaced, and start

• listen to the previously recorded material and punch-in on-the-fly with a

• For a record punch-out, press either [PLAY] or [STOP].

Recording is simply started with [REC+PLAY] and stopped again with
[STOP].

During the recording process, the available recording space is displayed. If
no disk space is available anymore, the D424 automatically stops.
The new take number appears in the position line (i.e. the 2nd display
line).
Every new recording session is pasted to the end of the current session,
regardless of the position before starting. A new take number is automati­cally assigned.

Insert recording allows to overdub existing recordings. It corresponds to
the destructive recording mode of a tape recorder.

with [REC+PLAY],

or

[REC+PLAY] command.

After performing an insert record, index markers are placed at the punch-in
and punch-out positions, and the two points are automatically transferred
to the IN and OUT edit registers for later editing.

E4/14 Operation SW V 1.6 Date printed: 06.03.02

4.4.9 Auto Insert Recording

In the auto insert mode, an auto-triggered destructive record punch-in/-out
is performed at the current IN and OUT positions.
The mode is started like a normal recording by pressing [REC+PLAY].
The D424 then automatically starts at (IN minus PRE-ROLL). As soon as
it is passing the edit points at nominal speed with at least one channel set
to READY, a precise punch-in at the IN point and a punch-out at the OUT
point are performed. The auto record process is stopped at (OUT plus
POST-ROLL).
The auto insert can be previewed by activating the rehearse mode with the
[PREVIEW] key before starting the process.

D424 MO Recorder

The auto insert process is indicated in the display, a countdown to the next
edit event replaces the remaining time display.

Note: When using several attempts to replace a part of the session with Auto

Insert, all versions are stored on disk. As a result of the non-destructive
editing, they are not deleted automatically and can be accessed in Se­quence Editing later. Use the CLEAN-UP tool in the Setup menu to delete
all unused files, when the production is fixed.

Date printed: 06.03.02 SW V 1.6 Operation 4/15

D424 MO Recorder

4.5 Editing

In addition to the standard recording modes, non-destructive editing is
provided. It is possible to cut out or delete a part of a sequence, and to
move or copy a source element to any destination.
For all editing processes there is a source element that has to be specified.
It is identified with a register pair IN and OUT. For some of the editing
features, an additional insert position is required, marked by a target point.

IN OUT IN

Source Element Target Point

All source operations are performed in the source editing mode selected
with [SOURCE]. For target-related functions, the target mode is switched
on with [TARGET].

There are three main editing functions that can be combined for more
complex processes:

CUT A source audio element is cut out of a sequence. It has the same effect as

cutting out a piece of tape and splicing the two ends.

ERASE A source element is erased, i.e. the audio element is filled with silence.

INSERT A marked source element is inserted at the target position.

Editing usually consists of the following steps:

• The source element is defined by setting the IN and OUT points

• The settings for the source element can be audibly checked with
PREVIEW functions. If necessary, the edit points are adjusted.

• In case of an INSERT the target point is set in the same way.

• The process is executed with [CUT], [ERASE], or [INSERT].

• If an edit process has been executed by mistake, it may be cancelled after­wards with [UNDO].

4.5.1 Setting IN and OUT Point s

The SOURCE IN, SOURCE OUT, and TARGET IN edit points can be
edited in different ways. In general, the positions can be searched for with
the transport commands, or they can be set and trimmed off-line with the
numeric keypad and the control wheel.
The source points are selected with the [IN] and [OUT] keys, either in
source mode, or with source and target mode switched off.
The target point is selected with the [IN] key when in target mode.

Setting a Point “On-the-Fly” An edit point can be set by listening to the material and simply storing the

current position with a keystroke. For this reason, the [CAPT] key c opies
the sequence time to the selected edit register.

Example: Defining the source element:

[PLAY] – Start listening to the source
[IN] – Select SOURCE IN point
... [CAPT] – Copy the current position to the IN point
[OUT] – Select SOURCE OUT point
... [CAPT] – Copy the current position to the OUT point.

E4/16 Operation SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

Searching for a Point Audibly By means of the transport commands – especially with the control wheel –

the correct edit position is first searched for. If it has been found, the posi­tion is transferred to the edit register again with the [CAPT] key.
When working with the control wheel, the sequence may look like this:

[TARGET] [IN] – select TARGET IN point
[CUE/SHTL] + control wheel – search for insert point with CUE/SHTL
[CAPT] – copy the position to the edit register

Trimming a Register Setting For minor modifications of a setting, points can easily be trimmed with the

cursor keys or the control wheel.

[OUT] – select source OUT point
[iiii] and [zzzz] – trim OUT register
[IN] – select source IN point
Control wheel – modify the current value
[ENT] – and save it to IN

Entering New Values If the correct position is known by position from an existing list, or if

points should be roughly defined before accurate tuning, the position can
be entered like any other register.

[IN] – select source IN point
[0...9] or [CLR] – enter a new value with the numerical keyboard
[ENT] – and store the entry to IN

Note: Trimming with the cursor keys automatically stores the modified values to

4.5.2 The CUT Function

the register. Keyboard entries and modifications by the control wheel are
stored with a subsequent [ENT] command.

For cutting out an element within the sequence, first the source element is
defined by setting the IN and OUT registers. When the source editing
mode is selected with [SOURCE], the currently selected element is indi­cated in the display.

A [CUT] command then removes the source element; the audio informa­tion before and after the element is joined directly.

All markers located within the source element will also be removed. A
new index marker is placed at the removed source element's position.

Date printed: 06.03.02 SW V 1.6 Operation 4/17

D424 MO Recorder

4.5.3 The ERASE Function

For erasing an element, first the source element is defined by setting the IN
and OUT registers. An [ERASE] command then deletes all audio infor­mation between the IN and OUT points.

Neither the length of the sequence nor the take and index markers between
the IN and OUT points are affected.

4.5.4 The INSERT Function

For the INSERT function, an additional point is required: the TARGET IN
point. When selecting the target edit mode with [TARGET], the SOURCE
IN point and the insert position (TARGET IN) are displayed.

IN

OUT

OUTIN

The [INSERT] command simply copies the source element to the target
position.

E4/18 Operation SW V 1.6 Date printed: 06.03.02

4.5.5 Combined Editing Processes

Taking the above basic functions, various combinations allow moving and
copying elements in a sequence. The source and target modes are mutually
exclusive; switching between them is possible at any time with the
[SOURCE] and [TARGET] keys. Leaving the editing mode is possible by
pressing the active edit key again.
All insert functions refer to the currently selected source element.

Copying an Element 1. A source element is selected in source editing mode.

2. After changing to the target mode, the selected element may be inserted

once or at several addresses.

Moving an Element 1. A source element is selected in source editing mode.

2. After changing to the target mode, the selected element is inserted at the

new position.

3. The source element is then removed in source mode with [SOURCE]
[CUT].

D424 MO Recorder

4.5.6 The PREVIEW Function

During adjusting the edit points, or as a final check before performing a
CUT, ERASE, or INSERT, all settings can be previewed in advance. Re­hearsing is started with the [PREVIEW] key while being in the edit mode.

IN

The following functions are provided for CUT and ERASE in the source
mode:

[PREVIEW] [IN] – The pre-roll element before the IN point is played.
[PREVIEW] [OUT] – The post-roll element following the OUT point is

played.
[PREVIEW] [SOURCE] – The complete source element (between IN
and OUT) is played
[PREVIEW] [CUT] – The cut process is rehearsed by playing the pre­view IN and OUT elements in sequence.
[PREVIEW] [ERASE] – The erase process is rehearsed by playing the
preview IN element, the muted source element, and the preview OUT ele­ment in sequence.

IN OUT

SOURCE

CUT

ERASE

OUT

Date printed: 06.03.02 SW V 1.6 Operation 4/19

D424 MO Recorder

SOURCE

IN

SOURCE

OUT IN

TARGET

OUT IN

INSERT

The following functions are provided for INSERT in the target mode:
[PREVIEW] [IN] – The pre-roll element before the TARGET IN point is
played in target mode.
[PREVIEW] [OUT] – The post-roll element following the TARGET IN
point is played in target mode.
[PREVIEW] [SOURCE] – The complete source element that will be
inserted is played
[PREVIEW] [INSERT] – The insert process is rehearsed by playing the
preview IN element, the insert element, and the preview OUT element in
sequence.

The preview process can be stopped at any time by pressing [PREVIEW]
again, or with a [STOP] command.

E4/20 Operation SW V 1.6 Date printed: 06.03.02

4.6 Sequence Editing

The sequence editing mode allows to select, create, and edit user se­quences. It is selected with the [SEQ] key.
The display changes to the sequence select mode, first waiting for a se­quence number. The ones available on the inserted disk are listed at the
top. If there are too many takes, they will be displayed as a running se­quence.

4.6.1 Selecting a Sequence

An already existing sequence number can be typed in. After confirmation
with [ENT], the selection is made, and the display reverts to the standard
mode.

D424 MO Recorder

Quitting the selection mode without changing the current sequence is
achieved with a further [SEQ] command.

4.6.2 Creating a New Sequence

If a new number is entered that is not listed in the available sequence list
yet, a new sequence will be created with the corresponding number: [SEQ]

[4] [ENT]

If no number is entered at all, a new sequence with the lowest available
number will be created: [SEQ] [ENT].

When confirmed with [ENT], the new empty sequence is selected as the
current one, and the display reverts to standard mode.

4.6.3 Deleting a Sequence

A sequence may be deleted by selecting it, and by performing a “ Cut All”
command with the key combination [TARGET+CUT].

Date printed: 06.03.02 SW V 1.6 Operation 4/21

D424 MO Recorder

4.6.4 Editing a Sequence

The sequence to be edited – either an existing one, or a new, empty one –
is selected by typing in the corresponding number (or nothing) followed by
[SOURCE] or [TARGET].
As default, the source sequence from where takes can be copied will be the
table of contents of the current disk (sequence 0). Each source take corre­sponds to a sound file.
When takes from any other sequence should be copied, they have to be
assigned before entering the editing mode. With the [uuuu] key the source se-
quence field (from...) is selected, and any sequence number may be en­tered.

The sequence editing mode is entered with a [SOURCE] or [TARGET]
command: [SEQ] [3] [uuuu] [2] [SOURCE].

The following display will appear:

The source sequence (from where takes are copied) and the target se­quence (the sequence that is edited) are listed in the first or last line, re­spectively.
Lines 2 and 3 show the currently selected sequences with a source take and
a target take position.
Now, the take in the source sequence that should be copied can be entered.
The destination insert point is defined by switching to the target line with
[TARGET], and typing in the corresponding take number before the insert
point.

If there is not enough space in the line to display all takes, a page with the
currently entered take in the center of the line is automatically shown. Ar­row signs indicate that there are more takes at the left or at the right of the
current page.
It is possible to switch between source and target definition with the keys
[SOURCE] and [TARGET] before performing an edit process. The active
half of the display is indicated with brighter digits, the entry field with
flashing digits.

With [INSERT] the source take is inserted after the target take.
With [CUT] the target take is deleted from the selected sequence.

E4/22 Operation SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

Examples: Insert take 3 from sequence 2 after take 4 in sequence 3:

[SEQ] [3] [uuuu] [2] [SOURCE] – define sequences and enter editing

mode
[3] [TARGET] [4] [INSERT] – define takes and insert.

Delete take 5 from sequence 1:

[SEQ] [1] [TARGET] [5] [CUT] – define sequence and enter editing
mode, select target take and delete it.

With [TARGET+CUT] the current sequence file with all takes will be
deleted.
With [TARGET+INSERT] the complete source sequence will be copied
to the target sequence. Existing takes in the target sequence will be over­written.
Leaving the sequence editing mode is possible in any state with a [SEQ]
command.

Notes: When entering the sequence editing mode, the source take is set to the first

take of the source sequence, the target take to the last take of the edited se­quence.
After an INSERT command, the source take is incremented to the next
take of the source sequence, the target position is after the take just in­serted. This will allow to copy a sequence by simply pressing [INSERT]
several times.
After a [CUT] command, the indicated take will be the take before the
removed one. Performing several [CUT] commands in sequence will result
in deleting a sequence take by take (in reverse direction).
All take selections can also be done with the [uuuu] and [tttt] curso r keys or
with the CUE/SHUTTLE wheel.

Examples: Switch to sequence 2:

[SEQ] [2] [ENT]

Create a new sequence with all files from toc

[SEQ] [uuuu]
[SOURCE] [TARGET+INSERT]
[SEQ]

Insert take 3 and 4 (sequence 2) after take 4 in sequence 3:

[SEQ] [3] [uuuu] [2]
[SOURCE] [3] [TARGET] [4] [INSERT] [INSERT]
[SEQ]

Delete takes 5, 6 and 7 from sequence 1:

[SEQ] [1]
[TARGET] [7] [CUT] [CUT] [CUT]
[SEQ]

Create a new sequence 3 as a copy of sequence 1:

[SEQ] [3] [uuuu] [1]
[SOURCE] [TARGET+INSERT]
[SEQ]

Delete sequence 3:

[SEQ] [3]
[TARGET+CUT]

Date printed: 06.03.02 SW V 1.6 Operation 4/23

D424 MO Recorder

4.7 CD Transfer and Disk Copies

The D424 MO recorder is equipped with a SCSI port. Additional external
MO drives and/or CD writers may be connected to perform fast data trans­fers.

4.7.1 Configuration

For making copies between the D424 and external drives, a SCSI connec­tion between the two devices has to be established.
Please follow the instructions below for correct operation:

• Switch off the two units and connect the SCSI cable.

• Make sure that the two units do not have the same SCSI address. The de­fault address of a D424 is “1”, the one of the Studer D741 is “2". See the
corresponding manual section of the device for changing SCSI addresses.

• Switch on the peripheral device first. If it is not a single peripheral drive
(disk drive only), switch it to SCSI slave mode (Studer D741: SCSI ON,
D424: SCSI offline mode).

• Switch on the D424.

4.7.2 Transfer to a CD Writer

The CD transfer option is the solution for small CD mastering applica­tions. It allows to copy sessions having been edited in a D424 sequence to
a CD writer.
The copy utility not only transfers audio data, but also additional PQ in­formation. The transfer is performed with double speed.

What will be Transferred? The audio data are transferred in one of the following modes:

TOC A complete sequence is transferred to a new, empty disc, including all

defined PQ information (disc-at-once mode). The CD is finalized and
ready for use on any CD player.

MULTI Same as TOC, but the CD is multi-session expandable (for use on PC sys-

tems).

ADD The current sequence is added to the CD-R contents. The table of contents

of the disc will not be finalized, it will be therefore ready for further sub­sequent transfers.

FIX No data are transferred. A CD-R that has been recorded in “ add” mode

will be finalized.

The D424 supports editing of the PQ data listed below, that are copied to
the CD in addition to the audio data of the currently selected sequence.
They can be set in the TRANSFER PARAMETER menu 64.

Take and Index Markers The take and index markers that were set in the D424's current sequence

will appear in the CD-R at the same position.
The take markers of the D424 correspond to CD tracks.

ISRC and UPC/EAN Codes There is a separate menu item in the COPY menu for defining the CD's

catalog number – the UPC/EAN code – and the ISRC code of each track.

Control Data The emphasis flag of the current sequence is copied to the CD writer as

well, all other control data are set to 0.

E4/24 Operation SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

Further parameters are considered for a data transfer to a CD recorder:

Noise Shaping For improved audio quality when transferring 20 bit or 24 bit data to a 16

bit CD.

Track Delay For inserting a delay of 100 ms between track begin and audio, to improve

readability of CDs on consumer players.

Index 0 Pause When transferring in “ toc” mode, an additional pause (index 0) of 2...5 s

can automatically be inserted between tracks. In “add” transfer mode, the
Studer D741 always generates pauses of 2 seconds.

Starting the Transfer • The transfer process is initiated in the SETUP menu. After having edited

the current sequence and checked the parameters, select MASTER COPY
menu 62: [SETUP] [6] [2]

• The indication “cd mounted” will confirm that the communication be­tween D424 and the CD writer is working properly.

• Start the process by moving to the “ start” item with the cursor keys, and
confirm with [ENT].

• During the entire transfer process, the indication “ processing” and a prog­ress bar with “#” signs will inform you on the transfer status.

• As soon as the transfer is finished, the display will revert to standard
mode. If a “ toc” transfer has been made, the CD writer will open its disc
tray.

Notes: Do not interrupt a SCSI transfer by disconnecting or switching off one of

the two units. The current session on the CD-R might be damaged.
The D424 will check if the CD-R has sufficient capacity for doing a disk­at-once transfer of the current disk. An ERROR message will appear if the
sequence is too long.
In ADD mode, the capacity check is made “ take by take” . The transfer
process is stopped automatically when the CD-R is full.
The D424 does not accept more than 99 indices for a single disk-at-once
transfer. If the required number is higher, multiple ADD transfers have to
be used.
Finalizing a CD will take 2...3 minutes. Do not interrupt the process. The
display will revert to standard mode as soon as the process is finished.

Date printed: 06.03.02 SW V 1.6 Operation 4/25

D424 MO Recorder

4.7.3 Copying a CD to the D424

The contents of a CD can be copied to a new sequence on the D424 disk,
including the track information.

What will be Transferred? The following transfer modes are available:

TOC The complete CD will be copied into a new sequence on the target disk.

Every track is stored as a separate sound file. The take markers in the new
sequence correspond to the CD tracks.

ADD The CD track currently selected is transferred. A new sequence is created

on the target disk with the single CD track.

No further transfer parameters are considered.

Starting the Transfer • Check that the inserted MO disk is ready for recording the CD tracks – it

should not be write-protected, have enough free capacity for adding the in­formation, and the format should be CD compatible (44.1 kHz).

• Select the CD drive as active drive (setup menu 51). Select the desired
transfer mode in menu 644. If transferring a single track, locate the CD to
the corresponding track by using the D424 transport keys.

• The transfer process is then initiated in the SETUP menu. Select the
MASTER COPY menu 62: [SETUP] [6] [2]

• The indication “cd mounted” will confirm that the communication be­tween the D424 and the CD writer is working properly.

• Start the process by moving to the “ start” item with the cursor key and
confirming with [ENT].

• During the entire transfer process, the indication “ processing” and a prog­ress bar with “ #” signs will inform you on the transfer status. After a suc­cessful transfer, the display reverts to standard mode.

• Reselect the internal MO drive as current drive (setup menu 51); you will
find a new sequence with the audio information just transferred from the
CD.

E4/26 Operation SW V 1.6 Date printed: 06.03.02

4.7.4 Copying to/from Other Disks

Sequences and complete disks can be copied from the internal drive to
additional, external drives.

What will be Transferred? The following transfer modes are available:

DISK COPY Will copy the complete disk. The target disk has to be empty; reformat it

first, if necessary (setup utility 53).

MASTER COPY Will create a new sequence on the target disk. The audio information will

be merged into a new, single sound file.

WORK COPY will create a new sequence on the target disk that is identical with the

source and includes all sequence information. All sound files that are used
by the sequence will be transferred as well.

The following additional parameters will be considered for the MASTER
COPY mode:

Noise Shaping (in TRANSFER PARAMETER menu 641); for improving data quality

when transferring 20 bit or 24 bit data to a 16 bit sequence.

Recording Parameters With MASTER COPY a new audio file is generated. Some of the basic

recording parameters are considered.

Digital Playback Level The transfer process considers the digital playback level setting in setup

menu 33.

D424 MO Recorder

Starting the Transfer • Check that the target MO disk is ready for recording – it should not be

write-protected and should have sufficient free capacity for adding the
prepared audio.

• The transfer process is initiated in the SETUP menu. After having edited
the current sequence and checked the parameters, select one of the COPY
menus 61...63, e.g. [SETUP] [6] [3]

• The current source and target information is displayed. The target disk can
be changed by selecting the “target” item.

• Start the process by moving to the “ start” item with the cursor key and
confirm with [ENT].

• During the entire transfer process, the indication “ processing” and a prog­ress bar with “ #” signs will inform you on the transfer status. After a suc­cessful transfer, the display reverts to standard mode.

Date printed: 06.03.02 SW V 1.6 Operation 4/27

D424 MO Recorder

4.7.5 Transfer Parameters

There is a number of transfer parameters that can be modified to meet the
requirements of different applications. All settings can be accessed in the
TRANSFER PARAMETER menu 64.

Noise Shaping (Menu 641) For making best use of high quality recordings in 20 or even 24 bit resolu-

tion, it is possible to apply the noise shaping algorithm to audio informa­tion for transfer to 16 bit media.

If set to OFF, audio data will be truncated to 16 bits.

UPC/EAN (Menu 642) The UPC/EAN code is a catalogue number for CDs (13 digits). The indi-

cated number is read from the inserted CD, modifications are possible only
as long as no code was programmed yet (code is 0).

ISRC (Menu 643) International Standard Recording Code (5 alphanumeric and 7 numeric

digits), including country and owner identification, recording year, and se­rial number.
There is one ISRC code for each take. If cleared, no UPC/EAN is re­corded.

CD MODE (Menu 644) One of the following modes can be selected:

TOC Disc-at-once transfer, including table of contents

MULTI Same as TOC, but multi-session expandable

ADD Add the current sequence without table of contents

FIX The CD is finalized (table of contents, no data transfer)

CD TRACK DELAY (Menu 645) When starting a consumer CD player, it usually takes some time before the

circuit is stable and the output is unmuted. For being sure that the com­plete audio information is played when starting from a cue position, the
waiting position has to be a certain time before the audio start position.
For that purpose, the CD track delay feature can be used. When it is en­abled, the begin of index 1 of each track is placed 100 ms ahead of the
previous position (audio start position).

Track n Track n+1
Index i Index 1

Track n Track n+1

Index i Index 0 Index 1

Track delay on:

100 ms

Track n Track n+1
Index i Index 1

Track delay on:

Track n Track n+1

Index i Index 0 Index 1

100 ms

If there is no pause (index 0), moving index 1 is identical to moving the
track begin.

E4/28 Operation SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

INDEX 0 DURATION (Menu 646) Commercial CDs often have an invisible “index 0” part between two

tracks. It allows to have a pause when playing the 2 tracks in sequence, but
also to indicate the end of a track with the track signal and to start immedi­ately when paused at the begin of the following one.

When transferring sequences from the D424 to the CD writer, a pause of

2...5 seconds may be inserted between the tracks. This is useful when con­stant pause periods with index 0 are required.
If individual pause times are required, they have to be inserted when edit­ing the sequence. Transferring is then performed with no additional “index
0 pause” (parameter = 0). The CD will then be recorded without index 0.
When inserting a pause between two tracks, cross-fades are usually ap­plied similar to insert recording. No additional cross-fades will be added,
when there already is a cross-fade section at the take begin (e.g. take has
been defined by a new record start, or a pause has been inserted manually).

Note: In ADD mode, the Studer D741 will generate pauses of 2 seconds regard-

less of the D424 settings. Use the “ toc” mode for transferring sequences
with continuous transitions from one take to the other (e.g. live concerts).

4.7.6 SCSI Addresses

The addresses of SCSI peripherals have to be unique. The SCSI host of the
D424 core board is on address “7”, the default address of the internal MO
drive is “1”. The default address of the Studer D741 CD recorder is “2”.
The address of an additional external drive may be set to any address be­tween 1 and 6, except the address of the D424's internal drive.
If connecting several D424 MO recorders with a SCSI cable, the address
of the additional recorders has to be adapted. See the troubleshooting sec­tion for the modification of the D424's internal drive.
The address of the Studer D741 may be changed at the DIP switch near the
SCSI connectors on its rear panel (for details see Studer D741 Operating
Instructions).
For changing the SCSI address of other CD writers, please consult the
corresponding manual.

Date printed: 06.03.02 SW V 1.6 Operation 4/29

D424 MO Recorder

4.8 Backup Copies

4.8.1 Sequence Backup

Example: Copy the current sequence 1 into a new sequence 2

Example: Select sequence 4 as the active sequence

When working on projects for several days, backup copies of the current
projects may be made either on the same disk or on a separate, external
disk. We recommend, as with any other computer-based data processing
program, to perform backups on a regular basis.
There are two backup methods with the D424.

With a sequence backup, the sequence file with all the editing information
is simply copied onto the same disk.

[SEQ] [2] [uuuu] [1] – Create a new sequence from sequence 1
[TARGET+INSERT] – Copy all takes.

It is very easy to switch between different versions of the same production
by selecting one of the available sequences as the active one.

[SEQ] [4] [ENT] – Select sequence 4 and return to main mode.

The disk contents may look like this:

Sequence 1 Original recording session, without any modifications
Sequence 2 Final pre-edited version after the first day
Sequence 3 1st version based on sequence 2
Sequence 4 2nd version based on sequence 2
Sequence 5 Special mix for customer A.

Notes: With a sequence backup, the sequence file with all the editing information

is simply copied onto the same disk. The audio data remain unchanged and
are referred to by all the different sequences

For more information on sequence editing, see the corresponding section
above.

E4/30 Operation SW V 1.6 Date printed: 06.03.02

4.8.2 Disk Backup

D424 MO Recorder

When there is additional disk drive available (or a second D424 recorder),
the contents of the current sequence with audio and editing data may be
copied onto a separate backup disk.

For setting up the system, the following steps are required:

• Switch off both units and install the SCSI cable between both units. The
termination of the destination drive must be on. In case of the D424, ter­mination is provided automatically.

• Switch on the destination drive. In case of the D424, switch it to SCSI
offline mode in menu item 52.

• Switch on the D424. It will automatically recognize the connected SCSI
destination.

After having started your system, the following steps are necessary for
transferring the current sequence onto the destination disk:

• Be sure to be in the sequence you would like to copy.

• Select the “work copy” mode with [SETUP] [6] [1].

• The target drive is listed in the menu page. If it is not yet correct, select the
“target” item, select the desired target drive and confirm with [ENT].

• Start the transfer by selecting the “start” item.

During the transfer, the display indicates “ processing” . When the transfer
is completed, the display reverts to the standard mode again.

Note: The information on the destination drive is not overwritten. The new se-

quence is simply added to the contents of the disk. A warning will appear
if there is not enough space on the destination drive.

Date printed: 06.03.02 SW V 1.6 Operation 4/31

D424 MO Recorder

4.9 Data Exchange with SADiE® Workstations

The audio data files (*.WAV) recorded on a D424 can be read by almost
every DOS-based workstation. With SADiE
further compatibility level is provided. The EDL files with all the editing
and disk structure information can be shared between the two products.
It is therefore possible to record and edit on a D424, do some more so­phisticated editing on the DAW, and play the final product again on a
D424 without loosing the editing information.

4.9.1 DAW Configuration

SADiE® software version 1.3, equipped with ISO MO drive 2.6 GB.

SETUP Sampling rate according to recording session on disk, 16 bit resolution

MIXER1 Stereo stream

PLAYLIST Two streams

4.9.2 Importing D424 Disks to the DAW

The D424 sequence files including all information for playing sequences
are converted into the common SADiE
large audio files do not have to be translated, the conversion process only
takes a short time.
Use the FIXUP utility in setup menu 65 to start the translation. If the proc­ess is finished, remove the disk from the D424.

®

digital audio workstations, a

®

interchange format. Because the

Insert the disk into SADiE's MO drive and import the D424 data in the
following way:

• Select the Disk Manager in the file menu, press the right mouse button and
select “Log Disk”

• Select “SCSI DOS transfer” in the file menu.
The D424 MO disk will be listed.

• Copy the EDL file (filex.EDL) to your project directory on the PC's hard­disk.

• Select the menu item “File – Convert”.

• Select input file “ filex.EDL” (the D424 EDL file), select output file “ to
playlist”.

• Continue working with the DAW, and save your session as usual.

What You Will See (and What You Won't):

You will see all takes and editing effects made on the D424 with 16 bit
files; the DAW does not consider any 20 bit and 24 bit files.

E4/32 Operation SW V 1.6 Date printed: 06.03.02

4.9.3 Importing SADiE® Disks to the D424

Create the EDL file with SADiE® interchange format, and copy the file to
the MO disk.

• Convert from “Playlist” into the EDL file (filex.EDL)

• Select “ Copy DOS to SCSI” in the file menu – select filex.EDL to MO
disk; always copy the EDL file to the main level, do not use any subdirec­tories.

D424 MO Recorder

Close the SADiE

• Select the Disk Manager in the file menu, press the right mouse button and
select “unlog disk”.

• The disk can now be inserted to the D424. It will automatically detect the
interchange file and reconvert it to a standard sequence file. You can
switch to the new sequence by typing [SEQ] and selecting the new se­quence file.

• Continue working with the D424as usual.

What You Will See (and What You Won't):

You will see all markers and edits done by the SADiE
will not have access to files located on the DAW's harddisk.

®

project and remove the disk.

®

workstation; you

Date printed: 06.03.02 SW V 1.6 Operation 4/33

D424 MO Recorder

4.10 Setup Menu

4.10.1 Accessing and Modifying Menu Items

With [SETUP] the display changes to the setup mode, where different
types of parameters and functions are available. The same key is used to
leave the setup mode again.
All parameters and utilities are identified with a unique number. The setup
menu has a hierarchical structure. It allows to directly access an item with
its number, or to be guided through the necessary menu levels.

Direct Access The fastest way to access menu items is by specifying their number di-

rectly after the setup command.

[SETUP] [3] [1] – opens menu 31 (analog input attenuation).

Cursor Access A menu structure allows to find particular items by navigating through the

multiple levels with the cursor keys. After the SETUP command, the main
menu is opened. Any item of the menu structure can be accessed with a
number of cursor commands.
[tttt] and [uuuu] move to an item within a setup level. The control wheel can be
used as an alternative to the cursor keys.
The currently selected item is highlighted, its number is flashing.
[zzzz] and [iiii] go to the previous or the next menu level.
When several parameters have to be modified, it is usually faster to use the
cursor keys to change from one item to the next one.

Modifying and Executing Items Each menu page lists up to 8 items. There are several types:

• Submenu items lead to the next menu level when selected with the [iiii]
cursor or the [ENT] key.

• Utilities will be executed when selecting the corresponding “yes” or
“start” item with the [iiii] cursor or the [ENT] key.

• Numerical parameters items are selected with the [iiii] cursor or the [ENT]
key.

• After the selection, the current value starts flashing. A new entry can now
be made by means of the numeric keypad and CLR, or by trimming the
current setting with the control wheel or the [tttt] and [uuuu] cursor keys. The
entry is terminated with [ENT].

• If a parameter page contains a list of presets to select from, each position
has a position sign (

• Move the cursor to the corresponding item with the [tttt] and [uuuu] keys or the
control wheel, and confirm with [ENT] or [iiii].
The cursor position is indicated with a flashing position sign (
currently selected with a cross-marked sign ( ).

E4/34 Operation SW V 1.6 Date printed: 06.03.02

o).

o), the one

4.10.2 Overview

Menu Item Display Meaning Parameters

1 CONFIG System configuration

11 S.FREQ Sampling frequency 44.056, 44.1, 47.952, 48 kHz
12 S.WORD Sample resolution 16, 20, 24, 24L bits
13 TC Timecode format 24, 25, 29.97DF, 30, NONSTD
14 RECMODE Record mode stereo, mono
15 UNIT Unit selection unit1, unit2, unit3
16 DEFAULT Configuration

161 RECALL Recall User, Power on, Factory
162 STORE Store current config to user setting cancel, yes

17 REMOTE Remote local, remote

2 REF & INP Reference & input parameters

21 CLK SRC Ref. clock source int, dig, video
22 DIG REF Digital reference sync, wclock, audio
23 INPUT Audio input dig, analog, option

3 AUDIO Audio parameters

31 INP LEV Analog input attenuator inp1, inp2 (0...–14 dB)
32 OUT LEV Analog output level level (0...3)
33 DIG LEV Digital playback level channel1, channel2, (–12...+6 dB)
34 XFADE Cross-fade time (0...2000) ms
35 METER Meter mode peak, peak hold

4 TRANSPORT Transport & display parameters

41 MAXSPD Maximu m wind speed (2...30) × nominal speed
42 VARISPD Play varispeed off, on (±12.5%)
43 AUTO Auto stop off, on
44 PRE/POST Pre-roll/post-roll (2...40) s
45 FADER Fader start1 disabled, enabled
46 REMAIN Remaining time mode auto, ind, take, seq
47 DISP RES Display resolution frames, ms

5 DISK Disk & sequence utilities

51 SELECT Select disk drive (1...6)
52 SCSI SCSI offline yes, no
53 FORMAT Format disk # ? cancel, yes
54 CLEANUP Cleanup disk # ? cancel, yes
55 REN-SEQ Renumber sequence ## ) cancel, yes
56 CLR-IND Clear all indices of sequence cancel, yes
57 DEL-FILE Delete sound file --DESTRUCTIVE-- Seq #, take #; cancel, yes

6 COPY Copy utilities

61 WORK Work copy seq ## to drv # target, start
62 MASTER Master copy seq ## to drv # target, start
63 DISK Copy disk # to drv # target, start
64 XFER PAR Transfer parameters

641 SHAPING Noise shaping off, on
642 UPC/EAN UPC/EAN code 1234 1234 12345
643 ISRC ISRC code, track ## abcde 1234567
644 CD MODE CD copy mode toc, multi, add, fix
645 DELAY CD track delay off, on
646 INDEX 0 Index 0 duration off, on (2...5) s

65 FIXUP Fixup disk # ? (for SADiE® exchange) cancel, yes

7 SERVICE Service utilities

71 FORMAT Format disk # ? (takes up to 40 min!) cancel, yes
72 DATE Date & time day.month year hours:min

D424 MO Recorder

Date printed: 06.03.02 SW V 1.6 Operation 4/35

D424 MO Recorder

4.10.3 Menu 1, CONFIG (System Configuration)

11 S. FREQ Sampling Frequency

The sampling rates listed below may be selected for recording and play­back. Please note that only one format is accepted per disk side. If another
format is applied, an error message will appear.

44d 44.056 kHz
441 44.1 kHz
48d 47.952 kHz

48 48 kHz.

The 44d and 48d formats are provided for video drop-frame applications.

12 S. WORD Sample Resolution

Any of the following resolutions for an audio sample can be selected. It is
valid for all subsequent recording sessions. Multiple formats within a se­quence are allowed.

16 16 bit
20 20 bit
24 24 bit

24L 24 bit long.

For compatibility reasons, there are two different settings for 24 bit re­cording. Samples in standard 16, 20 and 24 bit format are packed (2, 2.5
and 3 bytes/sample) for maximum capacity. The 24L format stores a sam­ple in 2 words (4 bytes/sample) for compatibility with third-party applica­tions.

13 TC Timecode Format

The D424 provides SMPTE/EBU timecode at its TC OUT connector. T he
provided format can be changed at any time, it does not depend on the re­corded information.
Once selected, the TC format is used for providing timecode and as display
format.

24 24 fps
25 25 fps

29d 29.97 fps, drop-frame format

30 30 fps.

In addition to these standard formats, a special submenu provides two ad­ditional formats that can be used for non-standard configurations.

29 29.97 fps, non-drop format

30d 30 fps, drop-frame format.

14 RECMODE Channel configuration (“Record Mode”)

The following configurations are available:

stereo New takes will be recorded in interleaved stereo mode. Both channels are

stored in a single file. A single [RDY] command will enable both chan­nels.

mono New takes will be recorded in mono mode. The channel selected with the

corresponding [RDY] key will be stored into a mono file.
When played back, a mono file will be routed to both output channels.
Stereo and mono recordings can be combined in a sequence. Full editing
functionality is provided.

E4/36 Operation SW V 1.6 Date printed: 06.03.02

15 UNIT Unit Selection

The D424 Desktop Controller can drive up to 3 recorders. Each recorder
must have its own unique address defined in this menu.
Select the address among unit1...unit3 (front panel only).

16 DEFAULT Configuration settings

The D424 configuration settings can be stored into a user memory. If the
settings were changed, they can be restored with a few keystrokes.

[SETUP] [1] [6] [2] – Store the current settings (confirm with “yes”).
[SETUP] [1] [6] [1] – Recall one of the following settings:

User Restore user settings

Power On Restore settings that were present when switching on the D424

Factory Restore factory defaults.

17 REMOTE Remote Mode

The remote mode menu allows switching between:

local Local operation enabled (front panel or Desktop Controller)

remote Remote operation (serial remote port).

During remote operation, all local functions except SETUP are disabled.

D424 MO Recorder

4.10.4 Menu 2, REF & INP (Reference & Input Parameters)

21 CLK SRC Ref Clock Source

Menu 21 provides the main clock references for the D424:

int Internal reference (quartz)

dig External digital reference (see menu 22)

video Composite video reference

22 DIG REF Digital Reference

Menu 22 specifies the external digital reference signal:

sync AES-11 input

wclock Word clock input

audio Digital audio input

Mode Status line

indication

Internal INT int - -

Video VID video - VIDEO

Digital, AES-11 ref. DIG dig sync AES/EBU SYNC

Digital, AES-3 audio input DIG dig audio AES/EBU IN

Digital, word clock DIG dig wclock WORDCKLOCK IN

If the currently selected reference is not available, the status line indication
will flash.

Setup

menu 21

Setup

menu 22

Reference input

23 INPUT Audio Input

The D424 either records digital signals at the AES/EBU input, or analog
signals at the line input (optional). With an appropriate adapter, the AES
input will also accept SPDIF signals.

dig AES/EBU (or SPDIF) at AES IN

analog Analog at LINE IN (optional)

option Reserved for further I/O options

Date printed: 06.03.02 SW V 1.6 Operation 4/37

D424 MO Recorder

4.10.5 Menu 3, AUDIO (Audio Parameters)

31 INP LEV Analog Input Attenuation

The level of the analog inputs can be adjusted separately in 0.5 dB steps.
The attenuation range is 0...–14 dB; with the standard I/O board configu­ration, the following sensitivities are achieved:

Attenuation in setup menu [dB] 0.0 –0.5 –1.0 ... –13.0 –13.5 –14.0

Input sensitivity [dBu full scale] 10.0 10.5 11.0 ... 23.0 23.5 24.0

32 OUT LEV Analog Output Level

The level of the analog outputs can be set to one of 4 preset values. There
is a common setting for both channels, the following levels are provided
with the standard I/O board configuration.

Output level in setup menu level 0 level 1 level 2 level 3
Output level [dBu full scale] 10 15 20 24

33 DIG LEV Digital Playback Level

When transferring digital audio signals to external devices, it might be
necessary to adjust the overall playback level. The D424 provides a func­tion to modify the playback level in the digital domain. There is a separate
setting for each channel.
Range: –12...+6 dB, in 0.1 dB steps

34 XFADE Cross-fade Time

A cross-fade time can be specified. It will be applied to all subsequent
recording and editing processes. Cross-fades are used in insert and auto re­cording modes as well as in cut, erase, and insert editing.
The cross-fade time is also applied to fade-in and fade-out processes in
assemble recording and sequence editing.
It is possible to change the cross-fade parameter during the editing process.
Please note that no further editing is allowed in fade or cross-fade areas.
When the cross-fade time is set to 0 ms, all corresponding processes will
be performed without fade or cross-fade times.
Range: 0...2000 ms, in 1 ms steps

35 METER Meter Mode

The meters either display in standard peak or in peak hold mode.

peak standard peak mode

peak hold peak hold mode; the peak value is reset with the [PEAK RESET] key, or

with [STOP].

E4/38 Operation SW V 1.6 Date printed: 06.03.02

D424 MO Recorder

4.10.6 Menu 4, TRANSPORT (Transport & Display Parameters)

41 MAXSPD Maximum Wind Speed

In SHTL mode, the end position of the control wheel refers to a variable
maximum speed. The same speed is applied to the shortcut wind command
[PLAY+NEXT] or [PLAY+PREV].
Range: 2...30 × nominal speed, in multiples of the nominal speed.

42 VARISPD Play Varispeed

If varispeed mode is switched on, playback with internal reference is per­formed with the corresponding varispeed. An indication with the currently
selected speed will appear in the third line of the standard display.

off Varispeed mode is switched off

on Playback is performed with varispeed

Range: ±12.5 %, in 0.5 % steps.

43 AUTO Auto Stop

When activated, the D424 will automatically stop at each new take begin.

44 PRE/POST Pre-roll/Post-roll

When previewing edit processes or performing auto records, pre-roll and
post-roll times are used. The D424 allows to specify these editing pa­rameters separately.
Range: 2...40 s, in 1 s steps.

45 FADER Fader Start

When the fader start operation is enabled, external fader start signals will
generate the specified PLAY and STOP commands.

off Fader start mode is switched off

on Fader start mode is switched on.

46 REMAIN Remaining Time Mode

The remaining time displayed in the 3rd line of the standard display refers
to one of the following points:

auto depends on the take format, see [TAKE FORMAT] key:

TAKE – remaining time to end of take
TAKE/INDEX – remaining time to next index or take

ind remaining time to next index or to end of current take

take remaining time to end of current take

seq remaining time to end of sequence.

47 DISP RES Display Resolution

All time information in the standard mode can be displayed either with ms
or frame resolution. The frame format corresponds with the selected time­code format.

msec time information in hours, minutes, seconds and milliseconds

frames time information in hours, minutes, seconds and frames.

Date printed: 06.03.02 SW V 1.6 Operation 4/39

D424 MO Recorder

4.10.7 Menu 5, DISK (Disk & Sequence Utilities)

51 SELECT Select Disk Drive

In the standard configuration, the D424 is working with its internal MO
drive. Because the drive runs on a SCSI bus, the system can be expanded
by connecting further devices. The D424 currently supports the 2.6 GB
MO drive and the CD writers.
In multiple drive configurations, a “current device” is selected. All system
operations are performed with this current device.

All available disk drives will be listed with the type (MO or CD) in the
order of the SCSI address (1...6). The one currently selected is cross­marked.
Default addresses: 1 for internal drive, and 2 for D741 CD recorder.
For changing the current disk, move to the new drive with the cursor keys,
and confirm the new selection.

52 SCSI SCSI Offline

In SCSI offline mode, a D424 is configured as a single MO drive; all in­ternal functions are disabled. As a slave, it can be connected to any SCSI­based controller that supports the 2.6 GB ISO drive, like a master D424 or
a suitable digital audio workstation.

yes Select SCSI offline mode. D424 is operated from an external controller.

no Select standard online operation.

53 FORMAT Format Disk

The inserted disk will be high-level formatted. All data will be lost, the
necessary DOS file structure is stored onto the disk. The process takes a
few seconds.
The FORMAT DISK utility is used for initializing a disk and to make it
ready for recording. After inserting a new, unformatted disk, the D424
automatically switches to this menu.
High-level formatting is also the fastest way to “clean” a recorded disk
and create a new, empty disk.

cancel return to the previous menu page

yes starts the formatting process. A “processing” message will be shown dur-

ing the formatting process, which takes only a few seconds.

54 CLEANUP Cleanup Disk

The CLEANUP process removes all sound files that are not used by any of
the sequences. It is performed to remove all temporary sound files that
were created during a session. All sequences and the required audio files
remain unchanged.

cancel Return to the previous menu page

yes Start the CLEANUP process. A “processing” message will be shown

during the process.
The CLEANUP process can reassign space for recording. If a sequence
has been recorded with a single recording session, a CLEANUP cannot
have any effect – only complete sound files will be deleted.

E4/40 Operation SW V 1.6 Date printed: 06.03.02

55 REN-SEQ Renumber Sequence

During editing, take numbers stay with the corresponding audio informa­tion, whereas indices always are renumbered to have an ascending order.
At the end of a production, it might be helpful to reassign take numbers to
the current sequence.
The utility renumbers the takes in ascending and contiguous order, begin­ning with “1” and according to the current sequence list.

cancel Return to the previous menu page

yes Start the RENUMBER process. A “processing” message will be shown

during the process.
The take and index markers as well as the absolute time and timecode
marks remain unchanged with respect to their audio position.

56 CLR-IND Clear All Indices of sequence

If indices were used for editing purposes only, they can be removed at the
end of a production. CLEAR INDICES removes all index markers of the
current sequence.

cancel Return to the previous menu page

yes Start the CLEAR INDICES process. A “processing” message will be

shown during the process.

D424 MO Recorder

57 DEL-FILE Delete Sound file

Instead of CLEANUP (which removes all sound files no more in use), the
DELETE SOUND FILE utility allows to delete single sound files.
Because of the non-destructive editing technique, it is the only way to de­lete single sound files; all other operations only affect the edit decision
lists, i.e. sequence files.
Sound files are addressed by means of their take number in the sequence 0,
which is a “table of contents” of the currently inserted disk.

seq-0; take ## Enter the take number to be deleted from the “table of contents”

cancel Return to the previous menu page

yes Delete the selected sound file.

For a correct identification, create a new temporary sequence, insert all
takes from sequence 0 with [SEQ] [uuuu] [TARGET+INSERT] [SEQ],
and look for the take to be deleted. Then select the DEL-FILE utility and
delete the corresponding take of sequence 0.

Date printed: 06.03.02 SW V 1.6 Operation 4/41

D424 MO Recorder

4.10.8 Menu 6, COPY (Copy Utilities)

All COPY utilities will transfer information from the currently inserted
disk to a destination drive connected to the SCSI bus.

target Select the target drive to which the data will be copied.

start Start the copy process.

61 WORK Work Copy

will make a copy of the current sequence onto the target MO disk. A new,
identical sequence will be created, including all sequence information like
take and index markers. All sound files used by the sequence will be trans­ferred as well.
Work copy is helpful for making backup copies. The new sequence not
only contains the currently used audio information, but also the complete
audio sound files.

62 MASTER Master Copy

will make a copy of the current sequence to the target MO disk, as an exact
copy of the source sequence, including track and index information. The
audio information will be merged into a new single sound file.
With MASTER COPY a new file is recorded. Some of the general re­cording parameters are considered. Please check for the correct format
(e.g. word length)

When performing a MASTER COPY to or from a CD writer, some special
rules apply:

Writing CDs In addition to the audio files, the essential PQ data will be transferred as

well. This includes take and index markers, UPC/EAN and ISRC codes.
See menu 64 for more details.

Copying CDs to the D424 When selecting the CD writer as source drive and the D424 as target, sin-

gle tracks (add mode) or complete CDs (toc mode) can be transferred in a
new sequence on the MO disk. Each track is copied to a separate sound
file, the sequence also includes the track numbers.

63 DISK Disk Copy

will copy the complete disk. The target disk has to be empty. Reformat it if
necessary (with setup utility 53).

E4/42 Operation SW V 1.6 Date printed: 06.03.02

64 XFER PAR Transfer Parameters

The following parameters (641...646) apply to MASTER COPY transfers.

641 SHAPING Noise Shaping

For making best use of high quality recordings in 20 or 24 bit resolution, it
is possible to apply the noise shaping algorithm on audio information
transferred to 16 bit media.
If set to OFF, audio data will be truncated to 16 bits.

642 UPC/EAN UPC/EAN Code (CD transfer only)

D424 MO Recorder

Catalogue number for CDs (13 digits).
The indicated number is read from the inserted CD, modifications are only
possible as long as no code was programmed yet (code is 0).

643 ISRC ISR Code (CD transfer only)

International Standard Recording Code (5 alphanumeric and 7 numeric
digits) including country and owner identification, recording year, and se­rial number.
There is one ISRC code for each take. If cleared, no ISRC code is re­corded.

644 CD MODE CD Copy Mode (CD transfer only)

TOC disc-at-once transfer

MULTI like TOC, multi-session expandable

ADD adding current sequence without table of contents

FIX CD finalizing process only (no data)

Date printed: 06.03.02 SW V 1.6 Operation 4/43

D424 MO Recorder

645 DELAY CD Track Delay (CD transfer only)

If the CD track delay is switched on, the audio information of a new track
is delayed 100 ms after the start of a new index 1. This allows consumer
CD players to start up and de-mute in time.

646 INDEX 0 Index 0 Duration (CD transfer only)

At the beginning of a new track, a pause with index 0 may be inserted, by
defining a duration between 2...5 seconds.
When the duration is set to OFF, no pause is inserted.

65 FIXUP Fixup Disk

The FIXUP utility creates the necessary files required for SADiE
patibility. The D424 sequence file is replaced by an interchange file that
can be interpreted by SADiE
If a SADiE

®

compatible disk is reinserted to the D424, all found inter­change files will again be replaced by new, corresponding D424 sequence
files.

4.10.9 Menu 7, SERVICE (Service Utilities)

71 FORMAT Format Disk

New disks are preformatted from the manufacturer. This process is called
“ low-level formatting” and is usually not necessary anymore. It is only
useful after having cleaned a disk that had numerous defective blocks.
Low-level formatting will then recheck every bit on the disk on validity,
which takes up to 40 minutes.

72 DATE Date & Time

The entered date and time will be stored to a battery-buffered clock circuit.
All recorded files will be marked with their origin or modification dates.

®

. Remove the disk after the fix-up process.

®

com-

E4/44 Operation SW V 1.6 Date printed: 06.03.02

4.11 Desktop Controller

The Desktop Controller is an ergonomic alternative to the D424's standard
front panel. It can be placed on a desk or a mixing console, and has a stan­dard size to be built into a console. See fold-out page, section 2. In addi­tion to the new design and the full front panel functionality, it provides
some operation enhancements and is capable of controlling up to three re­corders.

4.11.1 Configuration

The controller is connected to the master unit with a single controller cable
including the power supply as well as an audio monitoring signal for the
headphones output (both hard-wired to the master unit) as well as the
communication lines.

Note: The headphones output can monitor the audio signal of the first unit only.

Two additional units can be connected in a daisy-chain configuration with
two additional sync cables; the last one must be equipped with a termina­tion connector.

D424 MO Recorder

D424 D424 D424

Desktop

Controller

Sync cable Sync cableController cable

Termination
plug

Each recorder connected to the Desktop Controller has its own unique
address that can be assigned with setup menu 15.

4.11.2 Operation

Selecting a Recorder: As long as no recorder is selected, the controller is in idle mode, showing a

“not assigned” message. All connected recorders run locally.
The Controller can address one recorder at a time by selecting the corre­sponding key [UNIT1], [UNIT2], or [UNIT3]. The selected recorder will
switch to remote mode and show “** serial remote **”, the Controller will
load the current device data and be ready for operation
A remote connection is cancelled by deselecting the active unit (pressing
the same [UNITx] key again) or by selecting another one.

Operation Enhancements:

Direct Access to Input Level The setup menu for the calibration of the analog input attenuation can be

accessed directly. Simply press and hold one of the new volume keys
[VOL1] or [VOL2] and modify the parameters with the control wheel or
with the numerical keyboard.

Set Cue Mode Sensitivity With the [SLOW] key near the control wheel, the sensitivity of the cue

operation can be adapted. In SLOW mode, the same wheel movement
causes only a third of the standard distance.

Improved Key Assignment The INSTANT LOCK function is assigned to a separate key.

The [LOC] key is part of the main transport section with large push­buttons. It is closer to the main destination keys ([IN], [OUT], [0...9]).
The [TAKE F ORMAT] and [TIME FORMAT] keys are now separate
and no longer shared with the cursor functions.

Date printed: 06.03.02 SW V 1.6 Operation 4/45

D424 MO Recorder

4.12 Parallel Port and Fader Start Operation

A parallel remote port is provided for basic transport control and status
indication, a fader start circuit, and power supply voltages for external cir­cuits.
The port is always active. Therefore, a parallel controller may be operated
simultaneously with the front panel or a serial controller.

4.12.1 Specifications

Connector: D-type, 15 pin female

Pin Assignment:

4.12.2 Signal Description

Pin Signal Function

B_TAKE

1

B_INDEX

2

B_PLAY

3

S_STOP

4

S_PLAY

81

Signal Description

VCC Supply voltage (5 VDC, may be switched to 24 VDC)

GND Signal ground

S_STOP Stop command

S_PLAY Play command
S_PLOC PlayLoc command (locate to the last play position)
S_PREV Previous command (skip to the previous take or index marker)
S_NEXT Next command (skip to the next take or index marker)

B_INDEX

B_TAKE
B_STOP Stop tally, active when D424 is in Stop mode

B_PLAY Play tally, active when D424 is in Play mode

B_READY F ader Ready status, D424 is ready for fader start

FADER1,

FADER2

All inputs are opto-coupler inputs, negative-edge triggered. Use a switch or an open col­lector to signal ground as a driver.
All outputs are open-collector outputs. A static signal is active low, a pulse signal is a
negative pulse with active leading edge.

5

S_PLOC

6

FADER1

7

GND

8

915

B_STOP

9

B_READY

10

VCC

11

S_PREV

12

S_NEXT

13

FADER2

14

KEY

15

Indicates new index marker. A pulse signal is generated when an
index marker is passed in play mode.
Indicates new take marker. A pulse signal is generated when a take
marker is passed in play mode.

Fader start contact, see following paragraph

Take pulse
Index pulse
Play tally
Stop command
Play command
Ploc command
Fader start input 1
Ground
Stop tally
D424 ready
Supply voltage, switchable 5/24 V
Previous command
Next command
Fader start input 2
Key

E4/46 Operation SW V 1.6 Date printed: 06.03.02

4.12.3 Fader Start

D424 MO Recorder

The D424 provides an opto-coupler input (with internal bridge rectifier
and 20 mA current sink) for fader start operation.

D424

FAD1

FAD2

D424

FAD1
FAD2

GND
VCC

D424

FAD1
FAD2

GND

VCC

Fader Start Contact The fader start input is activated by applying a voltage of 5...24 VDC.

Connect either an external voltage source (left), use the internal supply
voltage (center), or pull to ground with a switch or an open collector
(right).

Fader Operation The following conditions are necessary to trigger a fader start:

• Fader start operation is enabled with setup menu 45.

• The D424 is ready for playback, i.e. a disk with a playable sequence is
inserted.
If the above conditions are met, the fader ready signal (GPI pin10) is ac­tive, indicating that fader start signals will be accepted.

Every transition of the fader start signal from inactive to active (applying a
voltage or closing the contact) will generate a PLAY command; each tran­sition from active to inactive (release the contact or removing the voltage)
will cause a STOP.
During fader play operation, the local keyboard is disabled. The D424 will
stop at the end of a sequence, or at the end of a take with activated
AutoStop function.

Date printed: 06.03.02 SW V 1.6 Operation 4/47