•Never restrict the airflow throught the devices’ fans
or vents.
•When installing equipment into a rack, distribute
the units evenly. Otherwise, hazardous conditions
may be created by an uneven weight distribution.
•Connect the unit only to a properly rated supply
circuit.
•Reliable Earthing (Grounding) of Rack-Mounted
Equipment should be maintained.
EXPLANATION OF GRAPHICAL
SYMBOLS
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to humans.
The exclamation point within an equilateral
triangle is intended to alert the users to the
presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
EXPLICATION DES
SYMBOLES GRAPHIQUES
Le symbole éclair avec point de flèche à
l’intrérieur d’un triangle équilatéral est utilisé
pour alerter l’utilisateur de la presence à
l’intérieur du coffret de “voltage dangereux”
non isolé d’ampleur suffisante pour constituer
un risque d’elétrocution.
Le point d’exclamation à l’intérieur d’un triangle équilatéral est employé pour alerter les
utilisateurs de la présence d’instructions
importantes pour le fonctionnement et
l’entretien (service) dans le livret d’instruction
accompagnant l’appareil.
ERKLÄRUNG DER GRAPHISCHEN
SYMBOLE
Der Blitz nach unten zeigendem Pfeil in einem
gleichseitigen Dreieck weist den Benutzer auf
das Vorhandensein einer unisolierten,
gefährlichen Spannung“ im Gehäuse hin, die
”
stark sein kann, einer Person einen elektrischen
Schlag zu versetzen.
Das Ausrufzeichen in einem gleichseitigen
Dreieck weist den Benutzer auf wichtige
Betriebs- und Wartungs- vorschriften in den
beiliegenden Unterlagen des Gerätes hin.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To reduce the risk of electric shock, do not remove the
cover. No user-serviceable parts inside. Refer servicing to qualified service personnel.
WARNING: To prevent fire or electric shock, do not expose this
equipment to rain or moisture.
AVIS
RISQUE DE CHOC ÉLECTRIQUE
NE PAS OUVRIR
ATTENTION: Pour eviter les risques de choc électrique, ne pas
enlever le courvercle. Aucun entretien de pièces intérieures par
l’usager. Confier l’entretien au personnel qualifié.
AVIS: Pour eviter les risques d’incendie ou d’électrocution,
n’exposez pas cet article à la pluie ou a l’humidité.
VORSICHT
GEFAHR EINES ELEKTRISCHEN
SCHLAGES. NICHT ÖFFNEN!
VORSICHT: Um das Risiko eines elektrischen Schlages zu
vermindern, Abdeckung nicht entfernen! Keine Benutzer
Wartungsteile im Innern. Wartung nur durch qualifiertes
Wartungspersonal.
WARNUNG: Zur vermeidung von Feuer oder elektrischen
Schlägen, das Gerät nicht mit Regen oder Feuchtigkeit in
Berührung bringen!
SAFEGUARDS
Electrical energy can perform many useful functions. This
unit has been engineered and manufactured to assure your
personal safety. Improper use can result in potential electrical shock or fire hazards. In order not to defeat the
safeguards, observe the following instructions for its installation, use and servicing.
PRECAUTIONS
L’énergie électrique peut remplir de nombreuses fonctions
utiles. Cet appariel a été conçu et réalisé pour assurer une
sécurité personnelle entiére. Une utilisation impropre peut
entraîner des risques d’électrocution ou d’incendie. Dans le
but de ne pas rendre inutiles les mesures de sécurité, bien
observer les instructions suivantes pour l’installation,
l’utilisation et l’entretien de l’appareil.
FEDERAL
COMMUNICATIONS
COMMISSION
(FCC)
INFORMATION
NOTE: 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 reasonable protection
against harmful interference
in a commercial installation.
This equipment generates,
uses, and can radiate radio
frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the
user will be required to correct the interference at his or
her own expense.
Illustration of RAVE unit ................................................................................................................................. 5
How it works .................................................................................................................................................. 8
Analog audio connections (RAVE 160/161/188 only) .................................................................................. 14
Digital audio connections (RAVE 80/81/88 only)......................................................................................... 15
AC power ...................................................................................................................................................... 16
RS-232 port .................................................................................................................................................. 17
Synchronizing to an AES3 (AES/EBU) stream................................................................................................18
RS-232 Port Information ............................................................................................................................... 32
tic delivery of audio over Ethernet on either network repeat-
ers or switches. Collisions are prevented on shared media
links, such as repeater hubs, by CobraNet’s proprietary “order
persistent” media access scheme. On dedicated media links,
such as with network switches, collisions are prevented due
to separate transmit and receive paths in a full-duplex con-
sions list is a message sent with the system clock that allow
individual units access to the network and reserve bundle as-
signments.
RAVE routes audio in bundles that are populated with a de-
fault value of 8 channels per bundle. The actual number of
channels per bundle may be altered, from 0 to 8, from the
management interface using SNMP. Reducing channel count
reduces system bandwidth requirements. On the models sup-
porting CobraNet transmission (81/88/161/188) audio is
brought into the RAVE using the rear panel connectors.
8
Introduction: How It Works (continued)
In default mode, the signals from the first 8 audio channel in-
puts will be grouped together in a bundle whose “network iden-
tifier” number is specified from the front-panel hexadecimal
switches or through the management interface. The bundle will
then be sent over the network to the destination devices that
are configured, or set to receive the bundle. RAVE models sup-
porting CobraNet reception (80/88/160/188) can then receive
the bundle by setting their respective front-panel hexadecimal
switches (or MI variables) to the appropriate bundle number.
The received bundle is then separated into individual audio chan-
nels and forwarded to the first 8 audio outputs at the rear-panel
in either analog or digital format, depending upon which model
Rave is used.
Signal flow for the six RAVE models are depicted below. The
wide black arrows indicate the bundle direction to or from the
network interface, while the thin arrows indicate individual audio
channels to or from RAVE’s rear-panel connectors.
RAVE 80s: 8 AES Outs
RAVE 160s-24: 16 analog
outs
RAVE 81s: 8 AES ins
RAVE 161s-24: 16 analog
ins
RAVE 88s: 4 AES ins + 4 AES
outs
RAVE 188s-24: 8 analog ins
+ 8 analog outs
9
Introduction: Channel Routing
Channel Routing
A RAVE network handles routing in bundles of up to eight audio
channels. Each bundle of audio transmitted on the network oc-
cupies a unique identifier, or number. In stand-alone mode, each
RAVE device handles two bundles—two sent, two received, or
one of each. For example, a RAVE 161, with 16 analog audio
inputs, supports two bundles for transmission over the network.
Therefore, the 161 requires two separate bundle number as-
signments to enable both groups of audio to be sent onto the
network. In default mode, one bundle comprises audio chan-
nels 1 through 8—the second bundle, channels 9 through 16.
You can always alter the number and order of audio channels
within each bundle via SNMP.
Similarly, a RAVE 80, with eight AES3 digital outputs, supports
network reception of two bundles (each AES3 output carries
two audio channels). With receivers, each bundle number need
not be unique. A receiver may “tune-in” to two specific bundles
signments may be the same. Whether the bundle assignments
on a receiver (or multiple receivers) can be duplicated is depen-
dent on whether the particular transmitters are setup for unicast
or multicast transmission. On network repeaters, all bundles
are multicast. On network switches, the value of the bundle
assignment determines the addressing of the transmission.
A RAVE device that both sends and receives, such as the RAVE
188 (eight analog inputs and 8 analog outputs) or RAVE 88 (4
AES3 inputs and 4 AES3 outputs), transmits one bundle and
can receive another. Note: in software mode, the RAVE 88 and
188 can support two bundles in each direction.
Behind a removable cover on the front panel of each RAVE unit
are four hexadecimal rotary switches. In stand-alone (hardware)
mode, these switches are used for selecting the assignments
for each of RAVE’s two bundles. In software mode, these
from two separate transmitters or both receiving bundle as-
Rotary Switches
Bundle Setup:
The two left-most switches set the assignment of the RAVE’s first bundle. The default mapping for the first bundle is:
RAVE 81/ 88/161 and 188- bundle 1 transmitted onto network from audio inputs 1 through 8
RAVE 80 and 160- bundle 1 received from network routes to audio outputs 1 through 8
The two right-most switches set the assignment of the device’s second bundle. The default mapping for the second bundle is:
RAVE 81 and 161- bundle 2 transmitted onto network from audio inputs 9 through 16
RAVE 88 and 188- bundle 2 received from network routes to audio outputs 1 through 8
switches are used to provide a network name for the RAVE.
Removable Cover- RAVE 160s-24 shown
10
RAVE 80 and 160- bundle 2 received from network routes to audio outputs 9 through 16
NOTE! Detailed instructions on setting network bundle assignments follow later in the Operation chapter.
PRE-INSTALLATION PREPARATION: ANALOG AUDIO SIGNAL LEVELS (RAVE 160/161/188 ONLY)
The RAVE models supporting analog audio inputs and/or outputs may require signal level setup to
achieve optimum performance. Level setup must be configured before rack-mounting the units. The
digital AES3 (digital audio) models do not require any adjustment. Level adjustments are made by
configuring internal jumpers on the main circuit board. For access to these jumpers, you must first
remove the top cover of the RAVE unit as follows.
NOTE: If synchronizing to an AES3 (AES/EBU) source, see page 18 for AES3 jumper settings.
CAUTION: Detach the power cord
before removing the top cover.
Dangerous voltages within the
enclosure may be of sufficient
magnitude to constitute a risk of
electric shock to humans.
To remove cover, first detach the AC power cord,
then remove screws from top, bottom, and sides.
The arrows in this picture point to the 17 screw
locations.
Required tools: #2 Phillips screwdriver.
Then lift the rear edge of the top cover about ¼ inch, or 6
mm, and slide the cover forward about 2 inches, or 5 cm. Lift
the cover straight up to remove it from the chassis.
Reverse this procedure to reinstall the cover.
Be sure to take proper protective
measures, such as working on an
antistatic surface and wearing a grounding
wrist strap, before touching any circuitry
inside.
11
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