A
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M20 O
R
O
PERATING
V
R
EPLACES THESE SECTIONS IN OWNER’S MANUAL REVISION
M20 H
M20 M
AJOR FEATURE UPDATE
WNER’S
EVISIONS
S
ERSION
T
ITLE PAGE
T
ABLE OF CONTENTS
IDDEN FUNCTIONS (APPENDIX
: V
ERSION
M20 U
SER INTERFACE PROTOCOL
M
F
ANUAL
OR
OFTWARE
2.10
1)
2.0 (A
DDENDUM
1.05:
2.0)
Copy the print of these new sections as
double-sided pages for best integration into
the existing manual format
ALESIS M20
PROFESSIONAL 20-BIT DIGITAL
RECORDER
O
WNER’S MANUAL
F
IRST EDITION VERSION
A
PPLIES TO OPERATING SOFTWARE VERSION
I
NCLUDES SOFTWA R E VERSION
1.06
2.10 A
DDENDUM
1.11
1999 A
LESIS CORPORATION
ALESIS
M20 R
EFERENCE MANUAL
1.06
ABLE OF
T
Impo r tan t Safety In str u ctions and Compliance Notices....................................... ix
Safety symbols used in this product..................................................................................................ix
Please follow these precautions when using this product:.............................................................. ix
Instructions de Sécurité Importantes ................................................................................................xi
Symboles utilisés da ns c e pr o d uit ..................................................................................................... xi
Beim Benutzen dieses Produktes beachten Sie bitte die folgenden Sicherheitshinweise:............ xii
Information to the User for Class A Digital Device (FCC Part 15, Class A) ................................ xiii
CE Declaration of Conformity.........................................................................................................xiv
Overview, Setup, and Basics ..............................................................................1
1.1 M20 Highlights.............................................................................................................................. 1
1.2 Unpacking and Inspection............................................................................................................ 2
1.3 AC Power Hookup........................................................................................................................ 2
1.4 Line Conditioners and Protectors................................................................................................ 3
1.5 About Audio Cables..................................................................................................................... 3
1.6 Basic Audio Hookup..................................................................................................................... 4
1.7 Use the Right Tape........................................................................................................................ 4
1.8 Preparing the Tape Prior to Use .................................................................................................. 4
1.9 Eject Tape Properly ....................................................................................................................... 4
1.10 Backup.......................................................................................................................................... 4
1.11 Operating Environment.............................................................................................................. 5
1.12 Avoid Electromagnetic Interference.......................................................................................... 5
ONTENTS
C
Control and Connector Basics.............................................................................1
2.1 About the Front Panel................................................................................................................... 1
2.2 About the Rear Panel.................................................................................................................... 3
2.2a Punch Footswitch..........................................................................................................3
2.2b Locate/Play or LRC Remote Control Jack .................................................................. 3
2.2c Analog Inputs and Outputs.......................................................................................... 3
2.2d Time Code In and Out.................................................................................................. 3
2.2e Word Clock In and Out................................................................................................. 3
2.2f ADAT Optical In and Out............................................................................................. 3
2.2g Video In and Thru .........................................................................................................4
2.2h ADAT Sync In and Out.................................................................................................4
2.2i MIDI In and Out............................................................................................................. 4
2.2j RS-422 In (Sony 9-Pin).................................................................................................... 4
2.2k Meter Bridge/Remote Panel Out................................................................................. 4
2.2l Power............................................................................................................................... 4
Editi n g M20 Op er ating Para m eter s .................................................................... 1
3.1 The Keypad.................................................................................................................................... 1
3.1a 0 through 9 buttons .......................................................................................................1
3.1b Up Arrow/Yes/Upper Case........................................................................................ 1
3.1c Down Arrow/No/Lower Case.................................................................................... 1
3.1d Cursor Left..................................................................................................................... 1
3.1e Cursor Right................................................................................................................... 1
3.1f Enter/Name.................................................................................................................... 2
3.1g Selecting Pages............................................................................................................... 3
3.1h Selecting Page Parameters............................................................................................ 3
3.1i Entering Parameter Values............................................................................................ 3
3.2 The Edit Button............................................................................................................................. 4
3.3 Editing Conventions ..................................................................................................................... 4
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M20 R
EFERENCE MANUAL
1.06
i
Table o f C o n tents
Tape Formatting.............................................................................................. 1
4.1 Sample Rate Selection................................................................................................................... 2
4.1a Pull-up and Pull-down Sample Rate Selection............................................................ 3
4.2 Word Length Selection................................................................................................................. 3
4.3 Format a New Tape ...................................................................................................................... 4
4.4 Record Tracks While Formatting................................................................................................. 4
4.5 Extend a Partially-Formatted Tape.............................................................................................. 5
4.6 End Formatting............................................................................................................................. 5
4.7 Certify Tape Format...................................................................................................................... 5
4.8 Reformatting: Caution!................................................................................................................. 5
4.9 Lock Out Formatting (Safe Mode)................................................................................................ 6
4.10 Bulk Erasing................................................................................................................................. 6
4.11 Recording a “Benchmark” Tape................................................................................................. 6
Track Record Enabling and Monitoring ............................................................. 1
5.1 Track Basics................................................................................................................................... 1
5.2 Track Input Enables...................................................................................................................... 2
5.3 Auto Input Switch......................................................................................................................... 2
5.4 Record Enable................................................................................................................................ 2
5.5 Safety Mode (All Safe).................................................................................................................. 3
5.6 Monitor Inputs (All Input)........................................................................................................... 3
Digital/Analog Input Selection and Routing........................................................ 1
6.1 Digital Source................................................................................................................................ 1
6.2 Input Select.................................................................................................................................... 1
6.3 Track Output Selection................................................................................................................. 2
6.4 Input Signal Routing (Analog And Digital)................................................................................ 2
6.4a Analog Input Routing................................................................................................... 3
6.4b Digital Input Routing .................................................................................................... 4
6.4c Record-E nabling the D est inatio n Tr ac ks ..................................................................... 5
6.5 Aux Routing (input and output).................................................................................................. 6
Metering ........................................................................................................ 1
7.1 Meter Mode Selection................................................................................................................... 1
7.1a Clearing Peaks............................................................................................................... 1
7.2 Meter Setup ................................................................................................................................... 2
Transport Controls and Basic Recording ............................................................ 1
8.1 About the Tape Counter............................................................................................................... 1
8.2 Stop................................................................................................................................................. 1
8.3 Play................................................................................................................................................. 2
8.3a Play Button and Sync Status......................................................................................... 2
8.4 Jog/Shuttle Wheel and Search..................................................................................................... 2
8.4a Jog Mode........................................................................................................................ 2
8.4b Shuttle Mode.................................................................................................................. 3
8.4c Search Button................................................................................................................. 3
8.4d Search Master................................................................................................................ 4
8.5 Other Transport Buttons.............................................................................................................. 5
8.6 Record ............................................................................................................................................ 6
8.6a Punching Into Record.................................................................................................... 6
8.6b Punching Out of Record ............................................................................................... 6
8.6c Record Write-Protection................................................................................................ 7
8.6d Recording with a Footswitch....................................................................................... 7
8.7 Rehearse Mode............................................................................................................................... 7
8.8 Auto Record .................................................................................................................................. 8
8.8a Setting Auto Record Punch Points............................................................................... 8
8.8b Enable Auto Record...................................................................................................... 9
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Table o f C o n tents
8.8c Set Auto Punch Points “On the Fly”............................................................................ 9
Autolocation ....................................................................................................1
9.1 Entering, Selecting, and Editing Location Points ....................................................................... 1
9.1A Set Locate....................................................................................................................... 1
9.1B Copy Tape Location....................................................................................................... 1
9.2 Deferred Play and Record............................................................................................................ 3
9.3 Play-After-Locate (Auto Play)...................................................................................................... 3
9.4 Loop Between Start and End Locate Points (Auto Return) ....................................................... 3
9.4a Setting Loop Start and End Points............................................................................... 4
9.5 Set Pre-Roll.................................................................................................................................... 4
9.6 Set Post-Roll................................................................................................................................... 4
9.7 Footswitch-Controlled Location.................................................................................................. 6
Varispeed.........................................................................................................1
SMPTE, Sync, and Offset Functions.................................................................... 1
11.1 Clock Source ................................................................................................................................ 1
11.2 SMPTE Rate................................................................................................................................. 2
11.3 Time Code Source....................................................................................................................... 2
11.3a Internal.......................................................................................................................... 2
11.4 Chase Reference .......................................................................................................................... 3
11.5 Reference Counter....................................................................................................................... 4
11.6 SMPTE Chase.............................................................................................................................. 4
11.6a Set SMPTE Offset Value (Page 1) ............................................................................... 4
11.6b Set SMPTE Chase Mode (Page 2)............................................................................... 5
11.6c Set Flywheel Duration (Page 3)................................................................................... 5
11.6d Park Ahead (Page 4).................................................................................................... 5
11.7 Internal Generator....................................................................................................................... 6
11.7a Generator Mode (Page 1)............................................................................................ 6
11.7b Time Code Start Reference (Page 2)........................................................................... 7
11.7c ABS/Start Offset (Page 3) ........................................................................................... 7
11.7d User Bits (Page 4, or Page 3 if the Page 2 value is TC Track).................................. 8
11.8 Tape Offset................................................................................................................................... 8
11.9 Track Delay.................................................................................................................................10
MIDI Functions.................................................................................................1
12.1 MIDI Device (Page 1).................................................................................................................. 1
12.2 MMC Output (Page 2)................................................................................................................ 1
12.3 MTC Follow Gen (Page 3).......................................................................................................... 1
12.4 Send Sysex Dump? (Page 4)....................................................................................................... 1
12.5 Receive Sysex Dump? (Page 5)................................................................................................... 2
12.6 Send Software? (Page 6).............................................................................................................. 2
12.7 Load Software? (Page 7)............................................................................................................. 2
Utility Menu.....................................................................................................1
13.1 Digital Out (Page 1)..................................................................................................................... 1
13.2 Online Source (Page 2)................................................................................................................ 1
13.2a Online Button............................................................................................................... 1
13.2b Independent Slave Mode............................................................................................ 2
13.3 Online Control (Page 3) .............................................................................................................. 2
13.4 One-Button Record (Page 4)....................................................................................................... 2
13.5 Input Monitor (Page 5)................................................................................................................ 2
13.6 Crossfade Time (Page 6)............................................................................................................. 3
13.7 Time Code Output Level (Page 7) ............................................................................................. 3
13.8 Rewind/Fast Forward TC Output (Page 8).............................................................................. 3
13.9 Unthread Timeout (Page 9)........................................................................................................ 3
13.10 Search Enable (Page 10)............................................................................................................ 4
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13.11 Locate Before Play (Page 11) .................................................................................................... 4
13.12 Mute Until Lock (Page 12)........................................................................................................ 4
13.13 Dynamic Punch (Page 13) ......................................................................................................... 4
13.14 Track Groups (Page 14)............................................................................................................. 4
13.15 Save Data to Tape? (Page 15)................................................................................................... 4
13.16 Load Data from Tape? (Page 16).............................................................................................. 5
13.17 Tape Type (Page 17).................................................................................................................. 5
13.18 ID Status (Page 18) .................................................................................................................... 5
13.19 User Bits (Page 19)..................................................................................................................... 5
13.20 Error Rate (Page 20).................................................................................................................. 6
13.21 Front Panel Software Version (Page 21) .................................................................................. 6
13.22 Software Version (Page 22)....................................................................................................... 6
The LRC Remote Control................................................................................... 1
Tutorials and Applications................................................................................ 1
TUTORIAL 1: Multiple M20 Operation............................................................................................. 1
Overview................................................................................................................................. 1
Synchronizing Machines ........................................................................................................ 1
Automatic ID Renumbering.................................................................................................. 1
Master/Slave Interaction....................................................................................................... 2
Achieving Lock....................................................................................................................... 2
Independent Slave Mode....................................................................................................... 2
Formatting Multiple Tapes.................................................................................................................. 3
Master Format Enabled, Complete Format.......................................................................... 3
Master Format Enabled, Format Extend.............................................................................. 3
Master Format Disabled........................................................................................................ 4
Master Format Disabled, Format Extend............................................................................. 4
TUTORIAL 2: Making Digital Backups ............................................................................................. 5
Dealing with Damaged Tape................................................................................................. 6
Making a 16-bit copy from a 20-bit master .......................................................................... 6
TUTORIAL 3: Recording Digital Audio from Other Sources.......................................................... 7
Digital Clock Considerations................................................................................................ 7
TUTORIAL 4: Combining M20s and ADATs.................................................................................... 8
M20 Transport Speed.............................................................................................................8
Sample rate vs. Pitch Control................................................................................................ 8
Input Monitoring.................................................................................................................... 8
Polarity Differences................................................................................................................ 9
TUTORIAL 5: Setting up Inputs ........................................................................................................10
TUTORIAL 6: Updating M20 Software ............................................................................................11
TUTORIAL 7: Using the M20 with Unbalanced Inputs and Outputs ............................................12
M20 SMPTE Synchronization Overview.............................................................. 1
16.1 Synchronization Basics................................................................................................................ 1
Master or Slave?..................................................................................................................... 1
Digital Timing Requirements................................................................................................ 1
16.2 The One Clock Principle............................................................................................................. 2
16.2a House Sync................................................................................................................... 2
16.2b “Genlocked” Time Code .............................................................................................. 2
16.3 Reference Counters vs. Clock Sources....................................................................................... 3
16.3a Location Reference....................................................................................................... 3
16.3b Reference Clock............................................................................................................ 3
16.3 Offsets in the M20 ....................................................................................................................... 5
16.3a SMPTE Chase Offset.................................................................................................... 5
16.3b Internal Generator ABS Offset..................................................................................... 6
16.3c Tape Offset ................................................................................................................... 6
16.4 SMPTE Time Code Rates and Types.......................................................................................... 7
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16.4a Drop Frame................................................................................................................... 7
16.4b Auto-detection of SMPTE Rates.................................................................................. 7
16.4c VITC (Vertical Interval Time Code)........................................................................... 8
16.4d MTC (MIDI Time Code).............................................................................................. 8
Time Code Tutorial ...........................................................................................1
17.1 Generating Time Code onto a VCR...........................................................................................1
17.2 Synchronizing Without a T/C Track..........................................................................................2
17.3 Recording a Time Code Track.................................................................................................... 3
17.3a Recording SMPTE from ABS Time............................................................................. 3
Maintenance and Troubleshooting .................................................................... 5
18.1 ADAT Head Cleaning................................................................................................................. 5
18.1a Head Cleaning Cassettes (optional)........................................................................... 6
18.1b Manual Head and Tape Path Cleaning...................................................................... 6
18.2 ADAT Head Life......................................................................................................................... 7
18.2a Head Alignment.......................................................................................................... 7
18.3 Tape Maintenance: Safe Tape..................................................................................................... 8
18.3a Tape Wear.................................................................................................................... 8
18.3b Care of ADAT Tapes................................................................................................... 8
18.4 Maintenance/Service.................................................................................................................. 9
18.4a Exterior Cleaning......................................................................................................... 9
18.4b Maintenance................................................................................................................. 9
18.4d Obtaining Repair Service...........................................................................................10
M20 Hidden Functions ......................................................................................1
Power-On Button Combinations ........................................................................................................ 1
Miscellaneous Button Combinations.................................................................................................. 1
Advanced Functions ............................................................................................................................ 2
Using The M20 Data Section Of Tape .................................................................1
General data section convention on the M20..................................................................................... 1
M20 Locate Points and SMPTE Offsets.............................................................................................. 1
BRC ⇔ M20 Song Start / SMPTE Start Offset and Loca te Point Map ............................................ 1
BRC ⇔ M20 Parameter Map............................................................................................................... 2
M20 Transport & System Error Messages........................................................... 1
M20 Major Feature Update: Version 2 ................................................................1
RS-422 (Sony 9-pin) slave operation................................................................................................... 1
RS-422 Track Arm: On/Off ................................................................................................... 1
RS-422 Mapping: 1-2, OddEvn, (Local)................................................................................ 1
ID 1 offline with the CADI remote ..................................................................................................... 2
CADI Tape and Reference Counter indications when ID 1 is offline.............................................. 2
Storing locate points when ID 1 is offline.......................................................................................... 2
Tape TC detection in fast wind modes .............................................................................................. 3
Tape TC in the Tape Counter.............................................................................................................. 4
Fixed mode time code generation: “TC Start Ref: Fixed”................................................................. 4
Digital Scrub: “Dig Scan: On/Off, nn dB” ......................................................................................... 5
I/O Card as the digital source............................................................................................................ 5
SMPTE Chase with the Stop button................................................................................................... 5
Tape TC updating when in Input mode.............................................................................................5
Vari-Speed and Pull-Up/Down.......................................................................................................... 5
MIDI Thru ............................................................................................................................................6
New Utility page or d er ....................................................................................................................... 6
CADI display changes......................................................................................................................... 6
Cassette Auto-Inject............................................................................................................................. 6
Deck Standby Mode............................................................................................................................. 7
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v
Table o f C o n tents
Auto-Park After Formatting..................................................................................................... .......... 7
Deferred Eject....................................................................................................................................... 7
New RS-422 Device ID ........................................................................................................................ 7
Improved SMPTE Clock Source Recognition.................................................................................... 7
Sample Rate Change During Play/Record........................................................................................ 7
CADI Remote Control........................................................................................ 1
Table of Contents................................................................................................................................. 1
Important Safety Instructions and Compliance Notices................................................................... 2
Safety symbols used in this product...................................................................................................2
Information to the User for Class A Digital Device (FCC Part 15, Class A) ................................... 2
CE Declaration of Conformity............................................................................................................ 3
Installation............................................................................................................................................ 4
Connections.......................................................................................................................................... 4
AC Power................................................................................................................................ 4
Bank Selection and Track Enables...................................................................................................... 6
Control of Other ADAT Models......................................................................................................... 6
Machine Selection and Status.............................................................................................................. 7
Online/Select Buttons (1-8) ................................................................................................... 7
Machine Edit Select................................................................................................................ 7
Editing Parameters of Offline Machines...............................................................................8
Locked LEDS.......................................................................................................................... 8
Error Display.......................................................................................................................... 8
Master Remote Function Buttons.......................................................................................................9
Roll Back ................................................................................................................................. 9
Replay.....................................................................................................................................10
Track Enable Groups.............................................................................................................10
All Clear.................................................................................................................................10
Setup.......................................................................................................................................11
Eject........................................................................................................................................11
Audio Routing Buttons.......................................................................................................................12
Digital Source........................................................................................................................12
Input Select............................................................................................................................13
Input Route............................................................................................................................13
Aux Routing...........................................................................................................................13
Special Control....................................................................................................................................14
Search Master Mode.............................................................................................................14
RMD Remo te M eter Display .............................................................................. 1
Table of Contents................................................................................................................................. 1
Important Safety Instructions and Compliance Notices................................................................... 2
Safety symbols used in this product................................................................................................... 2
Information to the User for Class A Digital Device (FCC Part 15, Class A) ................................... 2
CE Declaration of Conformity............................................................................................................ 3
Connecting the RMD to the M20 System........................................................................................... 4
Power...................................................................................................................................... 4
Connection to M20(s) and CADI Autolocator ..................................................................... 4
RMD Operation.................................................................................................................................... 6
Power-Up................................................................................................................................ 6
Peak Meters............................................................................................................................. 6
Status LEDs.............................................................................................................................6
EC-1 AES/EBU Interface..................................................................................... 1
Table of Contents................................................................................................................................. 1
Important Safety Instructions............................................................................................................. 2
Safety symbols used in this product...................................................................................................2
CE Declaration of Conformity............................................................................................................ 2
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Table o f C o n tents
About the EC-1..................................................................................................................................... 3
Overview of Main Functions .............................................................................................................. 4
About AES/EBU Digital Audio............................................................................................ 4
Digital Audio Cables.............................................................................................................. 4
Front Panel Setup................................................................................................................................. 4
Installation............................................................................................................................................ 5
Precautions.............................................................................................................................. 5
EC-1 Connection to M20 Main Circuit Board...................................................................... 5
Basic Operation .................................................................................................................................... 6
Selecting AES/EBU (I/O Card) as the Digital Source ........................................................ 6
Selecting AES/EBU (I/O Card) as the Clock Source.......................................................... 6
To select AES/EBU as the clock source:............................................................................... 6
If the EC-1 is not installed in the master M20:..................................................................... 7
Input Routing using AES/EBU (I/O Card) as the Digital Source ..................................... 7
If the input selection is analog and AES/EBU simultaneously:......................................... 8
Editing input routing when the input selection is analog and AES/EBU
simultaneously:.......................................................................................................................8
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Table o f C o n tents
viii
ALESIS
M20 R
EFERENCE MANUAL
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A
PPENDIX
1
M20 H
OWER
P
ISCELLANEOUS BUTTON COMBINATIONS
M
-ON B
Holding the following button combinatio ns when the M20 is power ed - on will allow
access to the following spec ial funct ions:
• Play and Record
Performs a user r es et which initializes all par amet er s t o their d efault v alues . T he
display will show “Initializing …”
Accessing hidden functions involves holding the Peak Clear button in combination with
the following buttons:
• Stop
Displays d rum head hour s .
• Eject
When pressed on the master unit, only t he master tape is ejected , i. e. t he ejec t
command is not s e nt to the slaves.
UTTON COMBINATIONS
IDDEN
F
UNCTIONS
• Record
This allows the user to r ec or d on a writ e-pr ot ec t ed t ape. It t oggles bet ween
“OVERRIDE WRITE PROTE C T ” which allows r ec or d ing r egar d less of the wr it eprotect tab s t atus , and “SE NSE WRIT E PROTE C T ” which only allows r ec o r d ing if
the write-protect tab is intact. Note that this function can only be toggled if a tape is
loaded. The overr id e is reset to sense the writ e-pr ot ec t t ab whenever a t ape is
ejected.
• Auto Return
Displays t he number o f c o nt inuous a ut o -l oo ps .
Accessing other hidden functions involves holding the Peak Mode button in
combination with the following buttons:
• Stop
The transport enters deck standby mode. In this mode, the cassette remains loaded
in the transport and the tape is completely withdrawn into the cassette.
• Eject
This performs an auto-inject. When a cassette is partially inserted (as is t he case
when a cassette remains in the transport door after an eject command), the cassette
will automatically load into t he tr anspor t .
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M20 R
EFERENCE MANUAL
1.06 A1-1
Appendix 1, M20 Hidden Functions
DVANCED FUNCTIONS
A
Although no t technica ll y hi d den funct io ns, the f o ll o w ing a re add itional ad v a nced
features that are not obvious:
• Holding Stop for at least 3 sec o nds will for c e t he tape t o unthread .
• Double-clicking the Fast Forward or Rewind button (pressing the button twice
within 500 milliseconds) will cause the tape to wind at t he fast est pos sible s peed
(approximately 85X play speed) with the capstan disengaged.
• Holding the Search button for at leas t 3 sec o nds will allow ed it ing of t he Searc h
Master (see M20 manual section 8.4d).
• While in a locate name field, pres sing the U p or Down button while holding Name
will scroll through a lis t o f 16 d efault names . T o c us t omize a name in t his list , edit
the name, then hold Name and press Reco r d . T he list of us er -d efined names will be
retained through a power -c yc le and will r e so r t bac k to t he default names wit h a
user reset .
• Holding Sample Rate and pressing Up, Down, or 0 will allow Pull U p, Pull Down or
No Pull Up/Down, respectively.
• Holding Edit while press ing Rollbac k will allow ed it ing of t he Rollbac k time. Refer
to the CADI user manual for further details.
A1-2
ALESIS
M20 R
EFERENCE MANUAL
1.06
M20 M
AJOR
F
EATURE
U
PDATE
Version 2.00 Features
RS-422 (S
The Online Source page in the Utility menu now has the “RS-422” parameter added to
its choice of o nline cont r o l s our ce settings. T wo new ut ilit y pages have also been ad d ed
to facilitate RS-422 slave tr ac k arming operat ions. When Online Source is set t o RS-422,
the M20 will recognize standar d Sony 9-pin contr ol c ommand s. T he M20 is opt imized
for BVU-950 emulation.
The way RS-422 Edit Preset commands record ar m M 20 tr ac ks is d eter mined by the RS422 Track Arm and RS-422 Mapping settings. These U t ilit y pages are d efined as
follows:
RS-422 T
When on, the M20 will respond to RS-422 Edit Preset c ommands by rec or d ar ming M20
tracks accord ing to the mapping page setting. When off, local track arming from the
M20 front panel is allowed i.e. , E d it Pr es et co mmands ar e ignor ed . L oc al t r ac k ar ming is
recommended when slave M20s (ID 2 and above) must be recor d enabled, or when ID 1
record arming that does not follow the assigned RS-422 mapping scheme is desirable.
: V
ONY 9-PIN) SLAVE OPERA T ION
RACK ARM
ERSION
: ON/O
FF
2
M20 A
RS-422 M
This parameter sets the mapping for 2-track (BVU-950) Edit Preset commands. When
set to 1-2, an A1 or A2 tr ac k arm c ommand will r ec or d ar m M20 t r ac ks 1 and 2
respectively. No mapping to ot her M20 t r ac ks will oc c ur . When OddEvn (Odd/Even) is
selected, an A1 tr ac k ar m c ommand will r ec or d ar m t r ac ks 1, 3, 5, and 7 (the odd
channels) and an A2 track arm command will rec or d ar m t r ac ks 2, 4, 6, and 8 (the even
channels). If an RS-422 controller can force an emulation type other than SONY BVU950 (e.g. Sony DVR-10 or Fostex RD-8) for the purposes of using A1-A4 (4 track Edit
Preset) or Da1-Da8 (8 t r ac k Ed it Pr eset ) ar ming with the M20, the map set t ing will be
ignored. This, for ex ample, will allo w an A1 or A 2 t r ac k ar m c ommand fr o m a D VR-10
(a VTR with 4 audio tracks) to record arm t r ack 1 or tr ac k 2 of the M20 without
mapping, i.e. M20 tracks 3 and 4 can be recor d ar med independently with an A3 or A4
Edit Preset command regardless of the map setting.
If RS-422 Track Arm is off, “(Local)” is indic at ed in place of the mapping select ion and
editing is not allowed. When Tr ac k map is t ur ned bac k o n, t he pr ev ious ly s elec t ed RS422 mapping selection is reverted to and editing is allowed.
DDENDUM
APPING
2.1 MA-1
: 1-2, ODDEVN, (L
OCAL
)
M20 Software Version 2
ID 1
CADI T
WHEN
S
OFFLINE W I T H T H E
When the CADI remote is connect ed t o mult iple M 20 r ec or d er s , t he ID 1 mas t er c an
now be taken offline. ID 1 maintains clock and s er ial c ontr o l ov er all s laves (ex c luding
32-bit ABS time cod e). U s ing a CADI, when ID 1 is offline, its t r anspor t r emains id le
while the CADI transport co ntr ols oper at e t he next online slave (known as the pseudomaster). Without a CADI connected, an offline ID 1 M20 tr anspor t will c ontinue to
operate normally and contr ol o nline slaves.
CADI
APE AND REFERENCE COUNTER INDICATIONS
ID 1
The CADI’s display shows the pseudo-master’s ABS and Tape TC values on the Tape
and Reference Counters r es pect iv ely. The CADI’s Refer ence C o unter will not s how t he
pseudo-master’s SMPTE In, Loc at e Point, Inter nal Generator , or SMPTE Offset v alues.
IS OFFLIN E
TORING LOCATE POINTS WHEN
When updating locate points (e.g. pressing Set Locate on the CADI), ID 1 locate points
are overwritten based on the pseudo -mast er ’ s t ape pos ition. For ex ample, pr es s ing
Copy Tape Locat io n on the CA D I will wr it e ID 2’s tape posit ion into ID 1’s curr ently
selected loc a t e a d d r es s . The following sc enarios suggest o per a t ion w hen ID 1 is o ff line:
M20 master and two slaves (ID 1
Æ
Æ
ID 2
REMOTE
ID 1
Æ
ID 3)
Æ
IS OFFLIN E
ID 1 Offline
• With ID 1 offline, the system will functio n normally. T r anspor t oper at io ns
performed on ID 1 will contr ol online slaves (32-bit A B S t ime co de is t r ansmit ted ).
The only difference is that ID 1 will ignor e any r emot e o nline sour c e input .
CADI with M20 master and two slaves (CADI
ID 1 Offline
• The first online unit becomes the pseud o-mas t er . T he pseud o-mas ter will operate
like a master in regard s t o all t r ansport functions, includ ing Rollbac k, Replay, L o c
Before Play, Mute Until Lock, etc.
• The CADI will reflec t ID 1 parameters wit h the follo wing exc ept ions : T ape C ount er ,
Reference Counter – Tape TC only, and t r anspor t s t at us. The CADI will reflect t he
pseudo-master status in these cases.
• All track enable select io ns and t r ac k groups along with All Input, All Safe, and All
Clear functions initiated fr om t he CA D I will be ignor ed by ID 1. The “Machine
Offline” message is temporarily d isplayed when a tr ac k selec t ion is at t empt ed
(similar to what occur s when trying to record or input enable an offline ID 2 or
greater unit ).
• There is no independent use of the ID 1 front panel functions other than Ejec t and
Online functions.
Æ
Æ
ID 1
Æ
Æ
ID 2
Æ
Æ
ID 3)
MA-2
M20 A
DDENDUM
2.1
M20 Software Version 2
• Using Tape Offset mode.
1. T ape Offset is enabled, ID 2’ s t ape offset value is non-zero and user t r ies t o t ake
ID 1 offline:
ID 1 offline is not allowed and “ID 2 Tape Offset Not Zero” is temporarily displayed.
2. ID 1 is offline, ID 2’ s tape offset v alue is non-zero and the user tr ies t o enable
Tape Offset:
Tape Offset enable is not allowed and “ID 2 Tape Offset Not Zero” is temporarily
displayed.
• When ID 1 is put back online, all slaves will st op. C A D I and s lave memo r y is
updated to be consistent with ID 1 parameters.
All Machines Offline
• If no machines are online, then the CADI will display “No M ac hines Online” when
any action is attempted.
Special notes when op eratin g a CA DI with ID 1 offlin e
No SMPTE Chase
• SMPTE Chase remains a function of the ID 1 machine. ID 1’s SMPTE Chase
parameter sett ings are r eflec t ed on the CA D I d isplay ev en when ID 1 is offline.
When ID 1 is offline, SMPTE Chase for the pseudo-master and remaining slaves is
not permitted.
APE
T
Internal Gene rator ope rati on
• ID 1’s internal generator parameter settings are reflected on the CADI display even
when ID 1 is offline. The pseudo-master ’ s inter nal generat or will o per ate, but its
output is subject to its own internal generator parameter settings (which may differ
from the ID 1 settings). Therefore, in most situations, time code generation should
remain a function of the ID 1 machine.
TC
DETECTION IN FAST WIND MODES
Detecting disco nt i nuo us a nd no nc o nt i guo us T a pe T C in fast wi nd m o d e s ha s be en
implemented. The M20 will reco gnize TC T r ac k t ime c od e d isc o ntinuities and t ime
code gaps in fast wind modes, i.e., when chasing time code or during a locate, scan,
search, fast forward, or rewind). In addition, when Rew/Fwd TC Out is on, time code
accurate with the TC T r ac k will be pr es ent at t he M20’ s T ime C od e and M ID I Out puts in
fast wind modes.
Please note that for speeds less than 1X (one times) play speed, the Tape TC is
extrapolated from t he last valid r ead ing.
M20 A
DDENDUM
2.1 MA-3
M20 Software Version 2
Note the following exceptio ns when using tapes pr ev ious ly fo r mat t ed wit h v1.xx
software:
• When a version 1.xx formatted tape has tc r ec or d ed to it using vers ion 1.x x
software, time c od e d is co ntinuities and non-contiguit ies in fast wind will no t be
recognized. In this cas e, t he M20 will ex t r apolat e t ime c od e v alues when in wind
modes (based on the last valid tape tc detected in Play or Record mode).
• When a version 1.xx formatted tape has tape tc recorded to it using version 2.xx
software, time c od e d is co ntinuities will be d et ec t ed in wind mod es. However, time
code values will be ext r apolat ed when a sect ion of t ape wit hout t ime c od e
(noncontiguous time code) is encountered while winding. Once Play or Record is
pressed, the ac tual t ape t c v alue (if pr es ent and d iffer ent) will be d et ec t ed and
properly displayed .
APE
T
IXED MODE TIME CODE GENERATION
F
TC
REF: F
IN THE TAPE COUNTER
When the Tape Counter select ion is SMPT E , the display is now based upon t he chase
reference selection:
• When the chase reference is ABS T ime, the d isplay s hows the A B S T ime plus
SMPTE Offset value, as before.
• When the chase reference is TapeTC, t he d isplay now shows t he Tape T C plus
SMPTE Offset value.
When Tape TC is selected as a chase reference and no Tape TC is detected on tape, the
Tape Counter will indica t e “no tA PE t c ” when in SMPTE mo d e.
IXED
The internal generator’s TC start reference parameter can now be set to “Fixed”. When
in Fixed mode, the start offset does not update to the last generated value when time
code generation stops as is t he cas e wit h Us er Set mod e. Fix ed mod e will maint ain the
same start offset value after generation stops, i.e., the star t offset v alue remains fixed,
therefore, ever y t ime gener at io n is r es t ar t ed , t ime c o d e out put will always begin wit h
the same start offset v alue.
”
: “TC S
TART
MA-4
M20 A
DDENDUM
2.1
M20 Software Version 2
IGITAL SCRUB
D
A Digital Scan page has been add ed t o t he U t ility pages . This allows the user t o hav e
control o v er d igit a l aud io o ut put when in jo g/s hut t le mo d e. The output may be
attenuated in 6 dB increments (0 dB t o –42 d B ).
Note the follo wing w hen using Aux Trac k routing:
• Aux routing play back through the “AUX” selected channels is defeated when
Digital Scan mode is enabled.
• Cue and review scanning will always output audio at –6 d B r egar d les s o f t he
DigScan status and the attenuation setting.
I/O C
ARD AS THE DIGITAL SOURCE
• The “D” indicators in the Met er D isplay ar e now always lit so lid when the Digita l
Source is I/O Card and the Clock Source is from a source other than I/O Card (even
when the selected clock s our c e is not pr es ent).
• When the Digital Source is set for I/O Car d , there are some limitat ions on t he
routing. Basically, the AES/EBU and analog input share the routing, i.e., they are
one in the same. What this means is that when the Dig Source = I/O Card, only I/O
Card routing (1/2 Æ 3/4, 5/6, 7/8, 1-4 Æ 5-8, or 1-8 Æ 1-8) is allowed. The analog
input routing will not be editable and will follow (be t he same as ) t he I/O Card
routing. If cont r o l of analog input r o ut ing is d es ired, the digit al s o ur c e c a nnot be
I/O Card. Also, note that if the user wants to mix t he I/O Card and analog inputs,
Input Routing mode must be set to 1-to-1.
: “D
IG SCAN
: ON/OFF,
NN
dB”
SMPTE C
If currently chasing SMPT E , pr es s ing the Stop but t o n will now st op t he tape and d is a ble
SMPTE Chase.
APE
T
ARI-SPEED AND PULL
V
TC
When the TC Track is input enabled, the SMPTE Rate will not aut o mat ic ally c hange
when transitioning from an area of tape with no tape TC into tape TC.
When the M20 is set for a pull-up/down, changing the pitch mode to VARI (by pressing
Pitch Mo d e o r b y e nt ering a non-ze r o vari-s pee d value) now disables t he pull -up/down.
Likewise, when the M20 is in vari-speed , enabling pull-up/down ret urns t he M20 t o
FIXED pitch mode operation.
HASE WIT H T H E STOP BUTTON
UPDATING WHEN IN INPUT MODE
-UP/D
OWN
M20 A
DDENDUM
2.1 MA-5
M20 Software Version 2
MIDI T
EW UTILITY PAGE ORDER
N
HRU
“Soft” MIDI Thru (automatically echoing non-F0 commands) is now defeated in order to
accommodate a MIDI closed loop more effectively.
The Utility menu page order in ver s ion 2. 00 has c hanged as fo llows :
Utility Pages
1 Dig Out 14 Mute Un t il Lock
2 Online Source 15 Dynamic Punch
3 RS-422 Track Arm 16 Track Groups
4 RS-422 Mapping 17 RMD Error LEDs
5 Online Control 18 Dig Scan
6 One-Button Record 19 Save data to tape?
7 Input Monitor 20 Load data from ta pe ?
8 Unthread Timeout 21 Tape Type
9 TC Outpu t Level 22 ID status
10 Rew/Fwd TC Out 23 User Bits
11 XFade Time* 24 Error Rate
12 Search Enable 25 Front Panel
13 Loc(ate) Before Play 26 Main
CADI
Version 2.10 Features
ASSETTE AUTO-INJECT
C
DISPLAY CHANGES
• Machine-specific Utility pages 21 (T ape Type), 23 (U ser B it s), 24 (E r r o r Rate), 25
(Front Panel), and 26 (Main) now indicate “See Local” in the CADI display.
• When the master M20 (ID 1) parks at a locate point before other slaves have
completed the locate, the CADI now continues to indicate a locate in progress by
flashing the Locate or Locate 0 buttons. The stop is also lit solid to indicate the
master is stopped.
• The CADI now displays the more general “Select digital src trks” message when
routing digital input, since a system can have several M20s with various digital
input sources.
The M20 now has an inject command. When a cassette is par tially inser t ed (as is t he
case when a cassette r emains in the tr anspor t d oo r after an ejec t c ommand), it is pos sible
to remotely load the cassette into the transport by pressing the Peak Mode and Eject
buttons simultaneously. Auto-Inject works from the M20’s fr ont panel or from t he
CADI.
MA-6
M20 A
DDENDUM
2.1
ECK STANDBY MODE
D
A deck standby mode has been added as a user-optional transport load condition. Place
the M20 in Deck Standby by pressing the Peak Mode and Stop buttons simultaneously.
In this mode, the cassette remains loaded in the transport and the tape is completely
withdrawn into the cassette. When the tape is withdrawn, the drum is turned off and
drum hours do not ac c umulat e. T he c ounter display will indicate “D E C K STA N D B Y”
until it is refreshed by another o per at ion; howev er , t he transport will remain in standby.
Pressing any transport co ntr ol but t o n (Rew, FFwd , St o p, Play, Rec , L oc , L o c 0, ) will fir s t
rethread the tape, then perform the selected transport operation.
M20 Software Version 2
UTO
A
EFERRED EJECT
D
EW
N
MPROVED
I
ARK AFTER FORMATTING
-P
When a tape format is completed by r eac hing the end of tape, t he ta pe will auto loc at e t o
00:00 ABS time and park, i.e., enter d eck standby mode until another transport
operation is performed .
Deferred E jec t has been add ed . Pressing Eject when a loca t e is in pr ogr es s will d efer t he
Eject action until the locate is complete. Pressing Eject twice before the locate is
completed, will abor t the loc at e and result in an immediate tape eject.
RS-422 D
The M20's RS422 device ID is now a BVW-75 instead of a BVU-950. Many Sony 9-pin
editor/contro ller s will id entify t he M20 as t his st anda r d B eta c am SP v ideo t ape r ec or d er .
Changing the ID to the BVW-75 specifically improves performance with AVID’s Media
Composer Version 7.1.
SMPTE C
The algorithm for det er mining if a SMPT E c loc k is v alid has been impro ved t o incr eas e
transport and drum motor performance.
EVICE
ID
LOCK SOURCE RECOGNITION
AMPLE RATE CHANGE DURING PLAY
S
Sample rate can no longer be changed when the tape is in Play or Record. This
guarantees the output of MTC at t he proper fr eq uenc y for the selec t ed s ample r at e.
M20 A
DDENDUM
2.1 MA-7
ECORD
/R
M20 Software Version 2
MA-8
M20 A
DDENDUM
2.1
The M20 User Interface Protocol (Version 2.10)
This section identifies and describes several user interface issues regarding parameter settings, their initialized defaults, and the master/slave M20 relationship.
There is also a brief definition of every M20 parameter and option. The chart below specifies this protocol.
Parameter Setting Issues
Most parameter values are stored in battery-backed (i.e. non-volatile) RAM and retain their settings when power-cycled. The exceptions are Format, SMPTE
Chase, Internal Gen and Auto Record enables, which always power on disabled. In addition, Search and Edit modes are not retained through a power-cycle.
Parameters that are termed "dynamic" contain values that are independent of the battery-backed RAM and update actively.
The chart indicates all stored parameters and the values they default to when initialized by a power-on reset (i.e. power on holding Play and Record). The
parameters that are stored to the data section of tape in the BRC-compatible format are indicated with an asterisk (*). The parameter options available are
underneath the associated parameter and italicized for clarity. If a parameter or option is an "executable", it performs the indicated function when initiated.
Master àà Slave Relationship Issues
When a user interface parameter is changed on a master, the resulting effect on a slave can be as follows:
• The master change is reflected on the slave. The master updates the slave status and/or value.
The parameter may or may not be modifiable on the slave.
• The master change has no effect on the slave. The parameter may or may not be modifiable on the slave.
• The master change is partially reflected on the slave. This is the case when the parameter value should not or cannot change on the slave, but it is
desired that the slave somehow reflect the master (or system) status.
Whether or not a parameter is editable depends upon the following:
- On a master machine à All parameters are editable regardless of online/offline status.
- On a slave machine à When offline, all parameters are editable.
When online, some parameters are not editable (see chart below).
User Parameter Retained in
Memory
Master
Control
Slave
Edit
Description Comments
Meter Display Block
Digital Source Y N Y Selects which digital source is to be used as digital input.
ADAT Optical
Track Copy
I/O Card
-- -- -- ADAT optical input is the digital source. Default.
-- -- -- Internal tracks are the digital source. Allows an internal digital track bounce.
-- -- -- Optional I/O card input is the digital source. Selectable only when card is present.
1
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Input Select Y N Y Enters/exits Input Select mode. Uses the Input Enable
Master
Control
Slave
Edit
Description Comments
buttons to select analog or digital input for channel pairs.
An “A” or “D” indicator in the meter display shows the
input selection.
Defaults as all tracks analog input. Input selection is by
adjacent channel pairs (1/2, 3/4, 5/6, 7/8). The “D”
indicator will flash when no digital input clock is detected.
The “A” is displayed only when in Input Select mode.
Input Routing Y N Y Enters/exits Input Routing mode. Uses the Input Enable
buttons to select digital source tracks routing or analog
input tracks routing (depending on the Input Select
status).
Aux Routing Y N Y Enters/exits Aux Routing mode. Uses the Input Enable
Defaults as Digital: one-to-one/Analog: one-to-one.
Digital source track selection is dependent on the currently
selected digital source (ADAT Optical, Track Copy, or I/O
Card).
Defaults as no auxiliary track routing.
buttons to select which tracks will be routed to the analog
aux track. AUTO routing sends record enabled tracks to
the Aux track.
Peak Mode Y Y Y Selects the peak hold status for the VU meters.
No Peak Hold
Momentary Peak Hold
-- -- -- No peaks are sustained.
-- -- -- Peak sustain is temporary. Default. The duration is determined by the VU Peak Hold
parameter in the Display menu.
Continuous Peak Hold
-- -- -- Peak sustain is infinite.
Peak Clear -- N Y Clears momentarily or continuously held peaks. Executable.
2
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Master
Control
Slave
Edit
Description Comments
Track Enable Block
Record Enables Y N Y Record enabling/disabling for channels 1-8, Aux, and
TC. These buttons flash when record-ready and light
solid when recording.
Dynamic
Punch-In/Out
-- -- -- When Record mode is pending (see Record), pressing a
record enable toggles between recording and playback.
Defaults to no tracks enabled. Record-ready tracks are
automatically placed in input monitor.
Punches performed with Record enables are not
automatically stored into location points 98 and 99.
Input Enables Y N Y Input monitoring for channels 1-8, Aux, and TC. When
disabled, monitoring is from tape.
All Safe* Y N Y Prevents all tracks (including Aux and TC) from being
Defaults to tape monitor. Input enables are used for audio
routing and track delay parameters as well.
Defaults to Off.
record enabled, thereby preventing any recording.
All Input* Y Y Y Places all tracks (excluding TC) into input monitor. Defaults to Off.
3
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Master
Control
Slave
Edit
Description Comments
Counter Display Block
Tape Counter
Mode*
ABS TIME
RELATIVE
SMPTE
Clock Source* Y N N Selects the sample clock source. A slave's clock source is automatically set to ADAT Clock
INTernal
VIDEO
ADAT
WORD
SMPTE
OPTICAL
I/O CARD
Y Y Y Determines how tape location is expressed on the Tape
Counter.
-- -- -- Shows the current tape location referenced to normal
Default.
ADAT absolute (ABS) time code.
-- -- -- Shows the current tape location referenced to the relative
zero location (determined by the Locate 00 value).
-- -- -- Shows the current tape location referenced to SMPTE
(i.e. ABS Time or Tape TC + SMPTE Offset).
When the chase reference is set to Tape TC, TC Track time
code is displayed in the tape counter.
and cannot be changed. The clock source indicator will
flash when no clock is detected at the selected input.
-- -- -- Sample clock is synchronized to the internal crystal. Default.
-- -- -- Sample clock is derived from NTSC/PAL black burst or
composite video input.
-- -- -- Sample clock is synchronized to the ADAT 9-pin Sync
Input.
-- -- -- Sample clock is synchronized to the Word Clock Input.
-- -- -- Sample clock is derived from SMPTE/EBU Input.
-- -- -- Sample clock is synchronized to the ADAT Optical
Input.
-- -- -- Sample clock is synchronized to the I/O Card Input. Optional expansion card must be installed.
Sample Rate Y Y N Toggles the nominal sample rate between 48kHz and
44.1kHz. Also used to select the respective 0.1% pull-up
and pull-down rates. A pull-down is available with a
29.97 fps SMPTE rate only. A pull-up is available with a
30 fps SMPTE rate only.
48kHz
44.1kHz
-- -- -- Professional standard. Default. Pull-up/down rates are 48.048kHz & 47.952kHz .
-- -- -- Compact Disc mastering standard. Pull-up/down rates are 44.144kHz & 44.056kHz .
4
To select a 0.1% pull-up or pull-down, press the Up or
Down buttons while holding the Sample Rate button. Press
the 0/Space button while holding the Sample Rate button to
return to a nominal 48/44.1kHz sample rate. The counter
displays will adjust their ABS/SMPTE time to reflect the
selected sample rate as a reference to real time.
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
SMPTE Rate* Y Y Y Selects the various SMPTE/EBU frame rates for input
30
30 DROP FRAME
24
25
29.97
29.97 DROP FRAME
-- -- -- 30Hz/30 frames. Music production standard. Default. Counting is equivalent to realtime.
-- -- -- 30Hz/Drop Frame. Non-standard. Counting is 0.1% fast relative to realtime.
-- -- -- 24Hz/24 frames. Film standard. Counting is equivalent to realtime.
-- -- -- 25Hz/25 frames. PAL standard. Counting is equivalent to realtime.
-- -- -- 29.97Hz/30 frames. NTSC Film transfer standard. Counting is 0.1% slow relative to realtime.
-- -- -- 29.97Hz/Drop Frame. NTSC standard. Counting is equivalent to realtime.
Time Code Source Y N Y Selects the time code source for the TC Track or the time
INTERNAL
EXTERNAL
-- -- -- TC is referenced to ABS time or the TC Track and
-- -- -- TC is referenced to the external source available at the
Master
Control
Slave
Edit
Description Comments
and output.
code output.
dependent on INTernal GEN parameter settings.
time code input.
Default.
Chase Reference Y N N Selects the synchronization reference for locking to
incoming TC.
ABS TIME
-- -- -- The absolute time is used as a reference for locking to
incoming SMPTE/EBU.
TAPE TC
-- -- -- The time code track is used as a reference for locking to
incoming SMPTE/EBU.
Pitch Mode* Y Y N Toggles between a fixed (nominal) pitch and variable
pitch control.
FIXED
VARI
-- -- -- The pitch is set to the standard 000. Default.
-- -- -- The pitch is determined by the Vari-Speed value.
5
If the clock source is Video, ADAT, Word Clock, or
Optical, the incoming time code must be synchronous
(gen-locked/resolved) to the incoming external clock
reference.
Default. ABS Time is always synchronous to the selected
sample rate.
User must insure that the TC Track is synchronous to the
selected sample rate and any incoming external clock
reference.
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Locate Select Y N Y Selects and displays the current locate number. Use the
Locate Addresses 00-99*
Locate Names*
Y N Y Use the cursor, numeric keypad, and up/down arrows to
Y N Y Press Enter/Name then use the cursor, numeric keypad,
Master
Control
Slave
Edit
Description Comments
numeric keypad or up/down arrows to select a new locate
number.
edit the locate address.
and up/down arrows to edit the locate point names in the
Locate Select page. Press Enter/Name again to exit and
store the edited name.
Default is Locate 00.
Default value is 00:00:00:00.00.00 for all locate addresses.
Default name is "LocateXX" (where XX = current locate
number) for locates 00-97. Names are reserved for Locates
98 and 99 ("Punch In" and "PunchOut").
Reference Counter
Y N Y Selects the reference counter display mode.
Mode
LOCATE PT
-- -- -- The reference counter displays the address of the selected
Default.
locate number specified in the LOCATE PT block.
TAPE TC
-- -- -- The reference counter displays time code recorded to the
TC Track.
INT GEN
-- -- -- The reference counter displays time code from the
internal generator.
OFFSET
-- -- -- The reference counter displays the SMPTE/EBU chase
offset value.
SMPTE IN
-- -- -- The reference counter displays incoming SMPTE/EBU.
Edit/Enable Block
Edit N N Y Toggles in and out of Edit mode. Defaults to off after a power-cycle.
Format Enable N N Y Toggles between format enabled (format ready) and
disabled.
1 Format Type
20-bit
16-bit
2 Format Safe
Y Y Y Selects the tape format type.
-- -- -- Formats tape for 20-bit linear (Type II) recording. Default.
-- -- -- Formats tape for 16-bit linear (Type I) recording. ADAT(XT) compatible.
Y N Y When turned on, format mode selection is prohibited. Defaults to off.
Defaults to off after a power-cycle. Button flashes when no
format is detected on a tape.
6
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
SMPTE Chase
Enable*
1 SMPTE Offset Value*
2 Chs Mode*
Frame-Lock
Lock/Release
3 Flywheel
4 Park Ahead
N N N Toggles between chase mode on and off. When enabled,
Y N Y
Y N Y Selects the chase mode preference.
-- -- -- Uses the incoming TC location reference to establish and
-- -- -- Uses the incoming TC location reference to establish a
Y N Y Selects the maximum number of out-of-range (or
Y N Y Selects the amount of time the tape will park ahead of the
Master
Control
Slave
Edit
Description Comments
the M20 will chase to external TC input.
Adjustable range is ±24:00:00:00.00.00. This value is
added to the selected time code chase reference (ABS
Time or Tape TC) when synchronizing to incoming TC.
maintain a lock.
lock, then ignores time code data and releases to the
selected external clock source to maintain the lock.
missing) frames allowed before re-chasing to incoming
TC. Adjustable from 000 to 150 frames of flywheel.
last valid TC input. Adjustable from 00:00 to 59:29
(ss:ff).
Defaults to off after a power-cycle.
Defaults to +00:00:00:00.00.00.
Default. The M20 will re-locate and re-sync when
incoming TC does not match the current tape location.
Defaults to 010 frames.
Defaults to 00:15 frames.
INTernal GEN
Enable*
1 Gen Mode
Play/Rec
Free Run
N N Y Toggles the internal generator function on and off.
When enabled, the M20 will generate TC based on the
INT GEN parameters, TC Track Input status, TC Source,
Defaults to off after a power-cycle. To turn on INT GEN,
TC Source must be set to INTERNAL. To output TC from
the internal generator, the TC track must be input enabled.
SMPTE Chase, and Chase Reference setup.
Y N Y Determines the generator mode.
-- -- -- Internal generator will run when playing or recording. Default.
-- -- -- Internal generator will start when INT GEN and TC
Track Input are enabled.
7
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
INTernal GEN
(Continued)
2 TC Start Reference
ABS Time
TC Track
User Set
Fixed
3 ABS/Start Offset Value
4 User Bits
Y N Y Determines the TC starting reference for the internal
-- -- -- The start address for INT GEN TC output is based on the
-- -- -- The start address for INT GEN TC output is based on the
-- -- -- The start address for INT GEN TC output is based on the
-- -- -- The start address for INT GEN TC output is based on the
Y N Y This address is used to set the start offset for ABS
Y N Y Eight characters of hexadecimal values 0 through F can
Master
Control
Slave
Edit
Description Comments
generator.
current ABS address plus the start offset.
TC track.
time that is set on the next INT GEN page (i.e. the start
offset value). When time code generation stops, the start
offset is automatically updated to the last generated
value.
time that is set on the next INT GEN page (i.e. the start
offset value). The start offset does not auto-update when
generation stops. This value remains fixed.
referenced INT GEN TC output, or set a new start time
when the start reference is User Set. Adjustable range is
00:00:00:00 to +24:00:00:00.
be entered in as user bits.
Default.
If no TC track reference is printed onto the tape, no TC
will output.
TC output is synchronous (resolved) to ABS time, but the
start address is arbitrary as defined by the user.
TC output is synchronous (resolved) to ABS time, but the
start address is arbitrary as defined by the user.
Default value is 00:00:00:00. This parameter is only
available when TC Start Ref is set to either ABS Time or
User Set.
Default is 00:00:00:00. This is page 3 (no ABS/Start offset
page) if the INT GEN start reference is TC Track.
Tape Offset Enable* Y N Y Toggles the tape offset time on and off. When enabled,
the M20 will use the selected offset value to offset the
tape's ABS location (positive or negative) relative to
normal ABS time.
1 Offset Mode*
Time Code
Locate
Y N Y Determines the tape (machine) offset mode used.
-- -- -- The tape offset is set referenced to ABS time code. Default.
-- -- -- The tape offset is set referenced to two locate points. The resulting TC difference between the selected locate
8
Default is off.
points determines the TC offset value used.
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Tape Offset Enable*
(continued)
Tape Offset value*
Tape Offset Loc Pt1*
Tape Offset Loc Pt2*
Y N Y Displays the offset for editing as referenced to ABS time
Y N Y Displays the offset for editing as referenced to a locate
Y N Y Displays the offset for editing as referenced to a locate
Master
Control
Slave
Edit
Description Comments
Default value is 00:00:00:00.00.00.
code. Adjustable range is ±24:00:00:00.00.00.
Default is Locate 00.
point. Locates 00 - 99 available.
Default is Locate 00.
point. Locates 00 - 99 available.
Track Delay
Enable*
Y N Y Toggles the track delay on and off. When enabled, any
track that has a non-zero delay value will play back with
the defined amount of delay relative to ABS time.
Trk x Delay or
Group Delay*
Y N Y Displays the track delay value for the selected track(s).
Adjustable from 0000 - 8160 samples of delay (000.0 -
170.0 ms @ 48kHz or 000.0 - 185.0 ms @ 44.1kHz).
Pre-Roll Enable* Y Y N Toggles the pre-roll function on and off. When enabled,
performing a locate will move the tape to the specified
locate address plus the pre-roll amount.
Pre-Roll Time*
Y N Y Adjustable from 00 - 25 seconds. Default is 5 seconds.
Post-Roll Enable* Y Y N Toggles the post-roll function on and off. When enabled,
an Auto Return or Auto Record operation will add the
post-roll amount to the end point or punch-out address.
Post-Roll Time*
Y N Y Adjustable from 00 - 25 seconds. Default is 5 seconds.
Default is off. Playback only.
Default is 000.0 milliseconds. The delay time displayed is
accurate only when playing back at normal pitch (48kHz or
44.1kHz). Can use the Input enables to select tracks.
Default is off.
Default is off. When used with Auto Record, the punchout still occurs at the exact location specified by the auto
punch-out address, but will continue playing for the
indicated post-roll amount then stop (if Auto Return is
disabled).
9
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Auto Record
Enable*
1 In Point*
2 Out Point*
N Y N Toggles the automatic record function on and off. When
Y Y Y Defines the auto punch-in locate point and address.
Y Y Y Defines the auto punch-out locate point and address.
Master
Control
Slave
Edit
Description Comments
enabled, Auto Record mode automatically performs the
punch-in and punch-out when Record and Play are
pressed.
Locate points 00 - 99 are valid points.
Locate points 00 - 99 are valid points. Disable the auto
punch-out point by pressing both Up and Down buttons.
Defaults to off after a power cycle. Button flashes when
enabled and punch-in/out times are invalid.
Default Auto Punch-In point is Locate 98. The master
updates slaves prior to performing an Auto Record.
Default Auto Punch-Out point is Locate 99.
Auto Return
Enable*
Y Y N Toggles the automatic return function on and off. The
tape will automatically rewind to a user defined start
Default is off. A slave will reflect the enable status of the
master, even if the slave's Start and End points are invalid.
locate point after reaching a user defined end point.
1 Start Point*
Y N Y Displays and defines the "return to" locate point number
Default is Locate 01.
and name. Locate points 00 - 99 are valid points.
2 End Point*
Y N Y Displays and defines the "return from" locate point
Default is Locate 02.
number and name. Locate points 00 - 99 are valid
points.
Setup/Enable Block
Auto Input Enable* Y Y Y Toggles the automatic input monitor function on and off.
When enabled, all record-ready tracks are monitored
from tape when playing, and monitored from input when
recording, fast winding, locating, or stopped.
Auto Play Enable* Y Y N Toggles the automatic play-after-locate function on and
off. When enabled, Play mode will be entered
automatically after a locate has completed.
Display N N Y Pressing the Display button will access the display pages. Default is page 1 on a power cycle.
1 VU Meter Scale
Normal
FinedB
Y Y Y Selects the dB scale used for the VU meter.
-- -- -- The VU meter ranges from -72 through 0 dB. Default.
-- -- -- The VU meter ranges from -2.0 through 2.0 dB.
Default is off.
Default is off.
10
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Display (continued)
2 Fine Headroom
3 VU Decay
4 VU Peak Hold
Y Y Y Sets the amount of headroom for the Fine dB VU meter
Y Y Y Sets the decay (segment sustain) time for the VU meter.
Y Y Y Sets the peak hold time for the VU meter. Adjustable
Master
Control
Slave
Edit
Description Comments
mode. The user specifies what value the 0 dB marking
represents. Adjustable from 2 to 22 dB.
Adjustable from 00 (no decay) to 99 (500ms decay).
from 00 to 99 (24.75 seconds of hold time).
Default is 15dB.
Default value is 10 (50ms per segment). Each step is 5ms.
Default value is 8 (2 seconds of hold time). Each step is
250ms.
Vari-Speed N N Y Pressing the Vari-Speed button will access the vari-speed
Display only on slaves.
page.
VARI *
Y Y N Sets the vari-speed value in cents and displays the
percent equivalent. Adjustable from -300 to +100 @
Default is 000 cents / +0.00%. Pitch changes are reflected
on all slave machines.
48kHz Fs and from -200 to +200 @ 44.1kHz Fs.
MIDI N N Y Pressing the MIDI button will access the MIDI pages. Default is page 1 on a power cycle.
1 MIDI Device*
Y N Y Selects the MIDI input and output device ID number.
Default ID is 000.
The value range is from 000 (00 hex) to 126 (7E hex),
and All (127 decimal, 7F hex).
2 MMC Output
Y N Y Sets MMC (MIDI Machine Control) output from the
Default is Off.
MIDI out port On or Off.
3 MTC Follow SMPTE
Y N Y Determines if MTC (MIDI Time Code) will generate
Default is Off.
simultaneously when SMPTE is output.
4 Send Sysex Dump?
5 Receive Sysex Dump?
-- N Y Press Yes to perform a system exclusive dump. Executable. A sysex dump can be performed from a slave.
-- N Y Press Yes to enter a sysex receive-ready state. Executable. A sysex receive can be performed from a
slave.
6 Send Software?
-- N Y Will execute an operating system software send via the
Executable.
MIDI output jack. Use Yes, No, and Enter buttons to
navigate this page.
7 Load Software?
-- N Y Will prepare the M20 to receive new operating system
software. Use Yes, No, and Enter buttons to navigate
this page.
Executable. CAUTION: Placing an M20 in this software
receive-ready state will erase the current operating system
software.
11
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Utility Pressing the Utility button will access the Utility pages. Default is page 1 on a power cycle.
1 DIGital Out
20-bit
16 dithered
16-bit
Dig Thru
2 Online Source
ADAT
MIDI
RS-422
3 RS-422 Track Arm
4 RS-422 Mapping
1-2
OddEvn
Y Y Y Sets the digital audio output format for playback, or
-- -- -- All 20 bits of audio data are available at the optical and
-- -- -- The digital audio optical output from a 20-bit tape or
-- -- -- The digital audio optical output from a 20-bit tape or
-- -- -- The digital audio input from an optical or I/O Card
Y N Y Determines the control (command) source when online is
-- -- -- The M20 will receive control commands from its Sync In
-- -- -- The M20 will receive control commands (MMC/SYSEX)
-- -- -- The M20 will receive control commands from its RS-422
Y Y N Determines if the ID 1 M20 will receive record arm
Y Y N Determines what ID 1 M20 tracks are record enabled
-- -- -- An A1 or A2 record arm command will arm M20 tracks
-- -- -- Odd/Even. An A1 record arm command will arm M20
Master
Control
Slave
Edit
Description Comments
configures the optical I/O for digital audio throughput.
I/O Card output.
digital input source is dithered down (utilizing the last 4
LSBs of the 20-bit word) to a 16-bit format.
digital input source is truncated down (the last 4 LSBs of
the 20-bit word are removed without manipulation) to a
16-bit format.
source is throughput to the optical or I/O Card output.
The digital audio word length is unchanged.
enabled.
port when online.
from its MIDI In port when online.
port when online.
commands via the RS-422 port. Can be On or Off.
when an RS-422 record arm command is received.
1 and 2 respectively.
tracks 1,3,5, and 7. An A2 record arm command will
arm M20 tracks 2,4,6, and 8.
If a 16-bit (Type I) tape is inserted, selecting “20-bit” or
“16-bit dithered” will only add or dither 4 zero value LSBs.
Default.
Type I compatible output.
Type I compatible output.
"Dig Thru" is necessary when performing a digital copy
from an ID 1 (master) M20 to an ID 3 slave for example.
ID 2 must be in Dig Thru mode to transfer digital audio to
ID 3.
A software load and sysex receive will occur regardless of
the Online Source and Online settings.
Default.
The M20 is configured to emulate a Sony BVW-75
Betacam SP videotape recorder.
Default is On. If off, ID 1 local (M20 front panel) record
arming is allowed.
If an A1-A4 or Da1-Da8 machine protocol is used from an
RS-422 controller for track arming, the RS-422 map
setting is ignored.
Default.
12
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Utility (continued)
5 Online Control
Local/Rem
Remote
6 One-Button Record
7 Input Monitor
ADC/DAC
Direct
8 Unthread Timeout
9 TC Output Level
10 Rew/Fwd TC Out
11 XFade Time*
12 Search Enable
Normal
Button
Y N Y Determines if local (front panel/LRC) control is allowed
-- -- -- When online, control is allowed via the front panel/LRC
-- -- -- When online, control is allowed via a remote source only.
Y N Y When in One-Button Record mode, Recording is initiated
Y Y Y Determines the analog input signal path.
-- -- -- Analog input is routed through the converters. Default.
-- -- -- Analog input is routed directly to the analog output.
Y Y Y Sets the time a transport must remain idle before the tape
Y N Y Sets the SMPTE/EBU time code output level. Adjustable
Y N Y When generating SMPTE/MTC, this function
Y Y Y
Y N Y Selects how Search mode (Jog/Shuttle) is enabled. A slave will ignore its setting and follow a master when
-- -- -- Search mode is entered when the Search button is
-- -- -- Search mode is entered only when the Search button is
Master
Control
Slave
Edit
Description Comments
when online is enabled.
and the user defined remote (online) source.
by pressing the Record button by itself. Play does not
have to be held. Can be On and Off.
automatically disengages from the drum. Adjustable
from 01 to 20 mins.
from 0.1 to 3.0 volts in .1 volt increments.
determines if TC will output in fast wind modes. Can be
On or Off. When on, time code will output in rewind,
fast fwd, cue, review, jog, and shuttle (i.e. whenever tape
is moving).
Sets the crossfade time for Record↔Play (Punch-In/Out)
transitions. Adjustable from 005.4 ms to 1.365 secs.
pressed or the Jog/Shuttle wheel is moved.
pressed.
Default.
Default is Off. Pressing the Record button from Stop will
also initiate recording. The M20 will automatically enter
Play mode, establish a lock, then enter Record mode.
Default is 4 minutes.
Default is 1.0 volts.
Default is Off.
Default is 10.0 milliseconds. Note that a completed punchout occurs only when the crossfade is finished.
controlled by a master.
Default.
13
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Utility (continued)
13 Loc(ate) Before Play
14 Mute Until Lock
15 Dynamic Punch
16 Track Groups
17 RMD Error LEDs
18 Dig Scan
19 Save data to tape?
20 Load data from tape?
21 Tape Type
22 ID status
23 User Bits
24 Error Rate
25 Front Panel
26 Main
Y Y N The M20 master will not enter Play mode until slaves
Y Y N M20 master and slaves will keep their DACs muted until
Y Y Y Determines if a punch-in/out can be performed with the
Y Y N Determines if the CADI Remote’s track enable groups
Y Y Y Determines if interpolation and system errors are
Y Y Y Offers digital audio output in Jog/Shuttle mode. The
-- N Y Press Yes to perform a TOC save to the data section. Executable.
-- N Y Press Yes to perform a TOC load from the data section. Executable.
N N N Displays the tape type when a formatted tape is inserted.
N -- -- Displays the ADAT device ID number. Up to 15 slaves
Dynamic -- -- Displays the user bits from a tape's TC track, incoming
Dynamic -- -- Displays the number of sync block errors per 14 drum
Y -- -- Displays the current software versions for the front panel
Y -- -- Displays the current software versions for the main
Master
Control
Slave
Edit
Description Comments
are located to the master's tape location. Can be On or
Off.
all decks have established a sync-lock. Can be On or
Off.
Record Enable buttons. Can be On or Off.
can be recalled. Can be On or Off.
indicated on the RMD. Can be On or Off.
scan output can be attenuated up to –42dB.
Detects ST60/120/180 tapes and their PAL equivalents.
(ID 02 to ID 16) can be identified by a master (ID 01).
SMPTE/EBU, or from the internal generator.
revolutions (280ms). Range is from 0000 to 6720 errors.
processors.
processor.
Default is On. This parameter is functional when slaves
are online and have tapes inserted.
Default is On. This parameter is functional when M20
slaves are online and have tapes inserted.
Default is On.
Default is On.
Default is On.
Default for digital scan is Off. The default attenuation is
0dB. When Dig Scan is on, aux track routing playback is
muted through the “aux” source channels.
Display only. Once the end-of-tape is reached, the M20
will store the actual tape-length value until the tape is
ejected.
Display only. The master is always ID 01. A master will
also indicate the number of slaves detected.
Display only.
Display only. There are 30 sync blocks per sector, 8
sectors per track, and 2 tracks per revolution.
Display only.
Display only.
14
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Online Y N Y Used to online and offline the M20. When enabled, the
Master
Control
Slave
Edit
Description Comments
M20 will respond to control from the user selected
"Online Source" as defined by Utility page 2.
Transport Block
Locate 0 N Y N When pressed, the button LED will light solid and the
tape will move (rewind or fast forward) to the
00:00:00:00:00 display position (ABS or Relative zero
time code).
Locate N Y N When pressed, the button LED will light solid, and the
Rewind or Fast Forward LED will flash to indicate the
direction of the locate which is determined by the
currently selected Locate number.
Deferred Play
Deferred Record
N Y N Pressing Play before a locate completes will setup a
deferred play condition. Play mode is entered after the
locate has completed.
N Y N Pressing Play and Record before a locate completes will
setup a deferred record condition. Record mode is
entered after the locate has completed.
Defaults to on. The M20 will always monitor and pass
through ADAT Sync port commands regardless of the
Online status and the selected Online Source.
See Locate button comments below. When the tape
counter displays SMPTE time, the tape will locate to the
SMPTE Offset location that is equivalent to ABS zero time
code.
A Locate can be aborted by pressing Stop, Rew, FFwd,
Search, or by pressing Play twice (aborting the deferred
play with the second press).
A deferred play can be aborted by pressing Stop, Rew,
FFwd, or Search.
A deferred record can be aborted by pressing Play, Stop,
Rew, FFwd, or Search.
Set Locate N N Y When pressed, the current tape location is stored into
locate number memory addresses 01 through 97. The
address is stored to the next locate number (i.e. current
locate number + 1).
Copy Tape Location N N Y When pressed, the current tape location is stored into
locate number memory addresses 00 through 99. The
address value is stored to the currently selected locate
number.
Rewind N Y N When pressed, the button LED will light solid and the
tape will rewind at 16x play speed for 3 min. ABS time,
then transition to 85x play speed.
15
Set Locate will not auto-increment to Locate numbers 98
and 99 (Punch-In/Out points) from Locate 97. User must
manually select Locate 98 or 99 in order to update these
locate addresses with the Set Locate button.
Copy Tape Location is also used to capture the current tape
location for the SMPTE Chase Offset value, the internal
generator's ABS or User Set TC Start Reference, and the
Tape Offset time code value.
A rewind is always performed with the tape engaged.
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Fast Forward N Y N When pressed, the button LED will light solid and the
Master
Control
Slave
Edit
Description Comments
tape will fast forward at 16x play speed for 3 min. ABS
time, then transition to 85x play speed.
A fast forward is always performed with the tape engaged.
Stop N Y N When pressed, the button LED will light solid and any
tape motion will terminate. If a timeout drum disengage
has occurred, Stop will flash. Pressing Stop again will
load the tape around the drum.
Play N Y N When pressed, the button LED will light solid and the
tape will move forward and lock at 1x play speed.
Cue
N Y N Pressing Play and Fast Forward simultaneously will light
the Play button LED solid and flash the Fast Forward
button LED while the tape is "scanned" forward at 3x
play speed. Attenuated (-6 dB) digital audio is heard as
play speed sound bites.
Review
N Y N Pressing Play and Rewind simultaneously will light the
Play button LED solid and flash the Rew button LED
while the tape is "scanned" in reverse at 3x play speed.
Attenuated digital audio is heard as play speed sound
bites.
Record N Y Y When pressed with the Play button, the Record button
LED will flash, then light solid when the tape establishes
a lock, and enter Record mode. From Play mode,
recording will begin when Record is pressed.
Record Pending Mode
-- Y N Allows a punch-in/out to be performed with the Record
enable buttons. When no tracks are record-ready, the
Record button will flash when Play and Record are
pressed together (indicating no recording is taking
place).
Override Write Protect
N N Y Allows a tape that has its write-protect tab removed to be
recorded on. Press and Hold Peak Clear, then press
Record to override the cassette's physical write
protection.
Default mode is a drum/capstan engaged Stop mode when
a tape is inserted. Pressing Stop will abort recording and
formatting.
A cue can be aborted by pressing Play, Stop, Rew, FFwd,
or Search.
A review can be aborted by pressing Play, Stop, Rew,
FFwd, or Search.
See One-Button Record under the Utility pages for the
alternative method of entering Record mode.
Auto Punch-In/Out location points 98 and 99 are
automatically updated when entering and exiting Record
Pending mode.
Default is "Sense Write Protect". When the tape is ejected
the override will automatically return to the default (not
allowing Record mode on a write protected tape).
16
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Rehearse* Y Y Y Toggles record rehearse mode on and off. When
Master
Control
Slave
Edit
Description Comments
enabled, pressing Record/Play enters Rehearse mode for
record-ready tracks. This emulates recording without
writing to tape. The Record button flashes when
rehearsing.
Defaults to off. Useful when used in conjunction with
Auto Input mode to switch to input monitoring when
rehearsing (punching in/out with Rec/Play or Auto
Record).
Jog/Shuttle Wheel Y Y N Used to select between Jog and Shuttle modes when
pushed. Perform a jog or shuttle operation by turning
the wheel clockwise for forward motion or counterclockwise for reverse motion.
Direction Arrows
Dynamic -- -- Indicates the direction tape is moving when jogging or
shuttling. Shuttle direction is always indicated when the
wheel is not in the center position. Jog direction is
indicated only when the wheel is in motion.
Jog Mode
Dynamic -- -- The tape is scrubbed with a velocity proportional to the
speed in which the wheel is turned. The speed range is
1/8x to 1x play speed.
Shuttle Mode
Dynamic -- -- The tape is moved at controlled speeds in forward and
reverse directions. The speeds available are 1/4x, 1/2x,
3/4x, 1x, 1.5x, 2x, 3x, 6x, 15x, and 16x play speed.
Jog vs. Shuttle mode is determined by the physical position
of the wheel. A slaves Jog or Shuttle LED will flash if its
physical position does not match the physical position of
the master. The wheel is ignored when in Record, Record
Pending, Auto Rec Pending, Rehearse, and Format modes.
Defaults to no indication until wheel movement (and the
center position in Shuttle mode) is detected.
When the wheel is turned at a proportional velocity range
near the 1x speed, the wheel velocity is averaged and
playback will be at 1x play speed.
Center position must be sensed before there is tape motion.
17
The M20 User Interface Protocol (Continued):
User Parameter Retained in
Memory
Search N Y N Toggles the transport control between the Jog/Shuttle
Search Master
N N N Selects the M20 (master or slaves) in a system that will
Master
Control
Slave
Edit
Description Comments
wheel and the transport buttons. When enabled, the
Search button LED will light, and the state of the wheel
will determine what mode (Jog or Shuttle) and direction
(Reverse or Forward) is applied to the transport.
provide the park point location for all online machines
after a Jog/Shuttle operation. To edit this parameter,
press and hold the Search button on the master M20 for
2 seconds. Continue to hold the Search button and use
the up/down arrows or alpha-numeric keypad to select
the search master machine (1 to 8, or None). If "None"
is selected, all M20s will park independently after a
search (i.e. no search master).
Defaults to disabled for transport button control. The
Search button is ignored when in Record, Record Pending,
Auto Rec Pending, Rehearse, and Format modes.
Defaults to machine 1 as the search master. Available on
the ID1 (master) M20 only. Use this feature to more
accurately find and mark location points when scrubbing
the Aux track of a slave machine.
Eject N Y Y Removes the tape from the transport. Following pro
VCR convention, the Eject button LED is on when the
transport is empty and off when a tape is loaded.
Master Eject Only
-- N -- Removes the tape from the ID1 (master) transport only,
even though online slaves may have tapes inserted. Hold
Peak Clear and press Eject to perform a master eject.
Alpha-Numeric Keypad Block
Alpha-Numeric
Keypad
N N Y Used for entering parameter values, time code and locate
address values, editing locate names, moving the cursor
between fields, and incrementing/ decrementing values.
18
Pressing Eject from the ID 01 master will eject the tapes in
all onlined slaves. Eject is ignored when recording or
formatting.
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