User manual ALESIS ADAT-M20 RS422

[. . . ] + D7 + PARITY equals an odd number. Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 COMMAND BLOCK FORMAT The definition of CONTROLLER and DEVICE throughout this document shall be as follows: "CONTROLLER" refers to the unit which controls the VTR. "DEVICE" refers to the unit (VTR) which is controlled. The communication between the CONTROLLER and DEVICE is composed of the following: MSD Cmd 1 LSD Data Count Cmd 2 Data -1 Data-n (n = max 15) 1 Byte Checksum 1 Byte 1 Byte 1 Byte 1 Byte When the Data Count is zero, the Data is not transmitted. [. . . ] it only responds to and does not generate Sony 9-Pin commands). In general, the M20 responds to commands in the following manner: 1) Recognized/supported command: · Return an ACK as response to command not requiring data. · Return appropriate data requested. 2) Checksum mis-match: · Return a NAK (with data=checksum error) and take no action. 3) Unrecognized/unsupported command: · Return a NAK (with data=undefined error) and take no action. 4) Number of data bytes is less than expected (e. g. Data byte count < # of bytes needed) · Return a NAK (with data=undefined error) and take no action. 5) If more than 10 milliseconds lapses between bytes in a command block: · Return a NAK (with data=timeout error) and take no action. Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4 COMMAND/RESPONSE CHART The marks shown in the tables mean the following: "O" "*" "X" indicates that response to this command is supported; returns appropriate response indicates that the appropriate status bits are set, but the M20 does nothing; returns an ACK (10. 01) indicates that this command is not supported; returns a NAK Undefined (11. 12. 01) COMMAND 00. 0C Local Disable 00. 1D Local Enable 00. 11 Device Type Request 01. 80 00. 81 04. 82 00. 83 01. 84 00. 85 01. 86 00. 87 20. 00 20. 01 20. 02 20. 04 20. 05 20. 0F 20. 10 2X. 11 2X. 12 2X. 13 20. 20 2X. 21 2X. 22 2X. 23 Memory Area Number Preset Memory Area Number Sense Memory Area Length Preset Memory Area Length Sense Memory Area Select Memory Area Select Sense Mem Area Output Select Mem Area Output Select Sense Stop Play Record Standby Off Standby On Eject Fast Forward Jog Fwd Var Fwd Shuttle Fwd Rewind Jog Rev Var Rev Shuttle Rev M20 RESPONSE O O O X X X X X X X X O O O O O O O O O O O O O O Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5 COMMAND 20. 30 24. 31 2X. 37 21. 38 21. 39 Preroll Cue With Data Chase Prog Speed + Prog Speed - M20 RESPONSE O O O O O O O O O O O O O O O 20. 40 Preview 20. 41 Review 20. 42 Auto Edit 20. 54 Anti-Clog Timer Disable 20. 55 Anti-Clog Timer Enable 20. 60 20. 61 20. 63 20. 64 20. 65 Full EE Off Full EE On Select EE On Edit Off Edit On 20. 6A Freeze Off 20. 6B Freeze On 20. 80 Memory Stop 20. 81 Memory Play 20. 82 Memory Write Start 20. 93 Memory Read Fwd 22. A3 Memory Red Rev 26. B1 Memory Rd-Pointer Preset 44. 00 44. 04 44. 05 40. 08 40. 10 40. 11 40. 12 40. 13 44. 14 44. 15 Timer-1 Preset TimeCode Gen Preset TimeCode Gen UBit Preset Timer-1 Reset In Entry Out Entry A In Entry A Out Entry In Data Preset Out Data Preset * * X X X X X X X O O O O O O O O O Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6 COMMAND 40. 16 40. 17 40. 18 40. 19 40. 1A 40. 1B 40. 1C 40. 1D 40. 1E 40. 1F 40. 20 40. 21 40. 22 40. 23 40. 24 40. 25 40. 26 40. 27 40. 2D 4x. 30 44. 31 41. 32 41. 33 4x. 34 41. 35 41. 36 41. 37 44. 3C A In Entry Preset A Out Entry Preset In Shift + In Shift Out +Shift Out -Shift A In +Shift A In -Shift A Out +Shift A Out -Shift In Flag Reset Out Flag Reset A In Flag Reset A Out Flag Reset In Recall Out Recall A In Recall A Out Recall Lost Lock Reset Edit Preset Preroll Duration Preset Tape/Auto Select Servo Reference Select Head Select Color Frame Select Timer Mode Select Input Check Postroll Duration Preset M20 RESPONSE O O O O O O O O O O O O O O O O O O * O O X X X X O X O O O X X X X X X X O 40. 40 Auto Mode Off 40. 41 Auto Mode On 40. 42 Spot Erase Off 40. 43 Spot Erase On 40. 48 Video Reference Disable Off 40. 49 Video Reference Disable On 42. 50 DA Input Select 42. 51 DA Sys Emph Select 41. 58 DA Sys Fs Select 45. 78 Chase Offset Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7 COMMAND 4X. A0 Audio Input Level 4X. A1 Audio Output Level 61. 0A TC Gen Data Sense 61. 0C Current Time Sense 60. 10 60. 11 60. 12 60. 13 In Data Sense Out Data Sense A In Data Sense A Out Data Sense M20 RESPONSE X X O O O O O O O X X O O X O O X X X X O O 61. 20 Status Sense 62. 23 Signal Cont Data Sense 61. 2A HM Data Sense 61. 30 60. 31 60. 33 60. 36 60. 3C 60. 50 60. 51 60. 52 60. 53 60. 58 Edit Preset Sense Preroll Duration Sense Servo Reference Select Sense Timer Mode Sense Postroll Duration Sense DA Input Sense DA Sys Emph Sense DA Input Emph Sense DA PB Emph Sense DA Sys Fs Sense 61. 78 Chase Offset Sense Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 M20 COMMAND RESPONSE DETAIL M20 Responses 10. 01 ACK - Sent in response to receiving a valid command that does not require data. 12. 11 Device Type Return - Sent as response to Device Type Request command. - The M20 responds as a Sony BVW-75: 2x 25 where x is TC frame rate: 0=29. 97 or 30, 1=25, 2=24 11. 12 NAK - Sent when detecting communication errors or as response to receiving an undefined command. - Data Format: BIT7 TIME OUT BIT6 FRAMING ERROR BIT5 OVERRUN ERROR BIT4 PARITY ERROR BIT3 BIT2 CHECKSUM ERROR BIT1 BIT0 UNDEFINED COMMAND SYSTEM CONTROL 00. 0C 00. 1D 00. 11 Local Disable Action: Put M20 into Remote Only Mode (ONLINE CTRL: Remote) Local Enable Action: Put M20 into Local/Remote Mode (ONLINE CTRL: Local/Rem) Device Type Request Action: None Response: Device Type = 12. 11 Data = 2x yy x is the TC frame rate: 0=30 frm, 1=25 frm, 2=24 frm yy is the device id: 25h = BVW-75 Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9 TRANSPORT CONTROL · Chase mode is automatically cancelled by all "2x" commands, except 2x. 37, 20. 60, 20. 61, 20. 63, 20. 64, and 20. 65. 20. 00 20. 01 20. 02 Stop Action: Stop the tape Play Action: Play the tape Record Action: Record (Punch-In Only) from any state. Any other transport command, except Eject and Standby Off, will cause a record exit. Standby Off Action: If already in standby, then unthread the tape (stop in mode1) If not in standby, then do nothing (just send ACK) Standby On Action: Pause the tape (stop in mode2) Standby = Stopped with the tape threaded. 20. 03 20. 04 20. 0F Eject Action: Eject the tape. If recording, do nothing (just send NAK data=undefined) Fast Forward Action: Forward the tape Jog Forward Var Forward Shuttle Forward Data: DATA-1 = N = Coarse speed variable (required) DATA-2 = N' = Fine speed variable (optional) Action: Estimate speed closest to M20 capabilities. Rewind Action: Rewind the tape (threaded or unthreaded) Jog Rewind Var Rewind Shuttle Rewind Data: DATA-1 = N = Coarse speed variable (required) DATA-2 = N' = Fine speed variable (optional) Action: Estimate speed closest to M20 capabilities. When only DATA-1 (N) is given, Tape Speed = 10((N/32)-2) When both DATA-1 (N) and DATA-2 (N') are given, Tape Speed = 10((N/32)-2) + (N'/256)(10(N-(1/32)-2) 10((N/32)-2)) 20. 10 2X. 11 2X. 12 2X. 13 20. 20 2X. 21 2X. 22 2X. 23 Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10 20. 30 Preroll Action: Set the Preroll bit (Status4, bit0) and locate to the PunchIn Point Preroll time. [. . . ] make current location the new Relative Zero point) In Entry Out Entry A In Entry A Out Entry Action: Transfer the timer or timecode data as In/Out Point data into the In/Out Entry (Transfer timer or timecode data into the PunchIn/Out Point) In Data Preset Out Data Preset A In Data Preset A Out Data Preset Data: DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" Action: Place specified data into In/Out Entry (set PunchIn/Out Point) In Shift + In Shift A In Shift + A In Shift Action: Add/subtract 1 frame of timer or timecode value stored in the In Entry as the In Point (Add/Subtract 1 frame from the MarkIn Point) Out Shift + Out Shift A Out Shift + A Out Shift Action: Add/subtract 1 frame of timer or timecode value stored in the Out Entry as the Out Point (Add/Subtract 1 frame from the MarkOut Point) In Flag Reset Out Flag Reset A In Flag Reset A Out Flag Reset Action: Clear the IN flag (STATUS-3, Bit 0) or OUT flag (STATUS-3, Bit 1) In Recall Out Recall A In Recall A Out Recall Action: Set the IN flag (STATUS-3, Bit 0) or OUT flag (STATUS-3, Bit 1) 44. 05 40. 08 40. 10 40. 11 40. 12 40. 13 44. 14 44. 15 44. 16 44. 17 40. 18 40. 19 40. 1C 40. 1D 40. 1A 40. 1B 40. 1E 40. 1F 40. 20 40. 21 40. 22 40. 23 40. 24 40. 25 40. 26 40. 27 Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14 40. 2D Lost Lock Reset Action: Clear the LOST LOCK flag (STATUS-8, Bit 6) 4X. 30 Edit Preset Data: DATA-1 thru DATA-15 Action: If x=1, then DATA-1 enables/disables tracks 1, 2, TC If x=2. . F, then DATA-2 thru DATA-15=bitmap of cascaded units 1 thru 14 <data-1> = RS-422 Edit Preset data-1 format Bit7 Bit6 Insert Bit5 Assem Bit4 Video Bit3 Bit2 TC Bit1 Trk2 Bit0 Trk1 <data-2>. . . <data-15> = Bit7 Trk8 Bit6 Trk7 Bit5 Trk6 Bit4 Trk5 track bitmap of unit #1. . unit #14 (0=track disabled, 1=track enabled) Bit3 Trk4 Bit2 Trk3 Bit1 Trk2 Bit0 Trk1 44. 31 Preroll Duration Preset Data: DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" Action: Set Preroll Time (range 0 thru 25 secs) Timer Mode Select Data: DATA-1: 01=Timecode; 02=Timer-1 (ABS) Action: Select timer system to be used as a basis for In Entry, Out Entry, In Preset, Out Preset, Preroll and Cue Up With Data, etc. Postroll Duration Preset Data: DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" Action: Set Postroll Time Auto Mode Off Auto Mode On Action: These commands are used for turning the AUTO mode of the DEVICE on/off. 41. 36 44. 3C 40. 40 40. 41 44. 78 Chase Offset Preset Data: DATA-1=Frame, DATA-2=Seconds, DATA-3=Minutes, DATA-4=Hours, · All data bytes are in BCD format (ms nibble=tens; ls nibble=ones) Action: Set Chase Offset Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15 SENSE REQUEST 61. 0A TC Gen Data Sense Data: DATA-1 = 01: Request for GEN TC Response: 74. 08: GEN TC DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" Data: Response: DATA-1 = 10: Request for GEN UB 74. 09: GEN UB DATA - DATA-1 thru DATA-4 same format as in "44. 05: Time Code Generator User Bit Preset" Data: Response: DATA-1 = 11: Request for GEN TC and GEN UB 78. 08: GEN TC DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" - DATA-5 thru DATA-8 same format as in "44. 05: Time Code Generator User Bit Preset" 61. 0C Current Time Sense Data: DATA-1 = 01: Request for LTC TIME Response: 74. 04: LTC TIME DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" 74. 14: LTC INTERPOLATED TIME DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" Data: Response: Data: Response: DATA-1 = 04: Request for TIMER-1 74. 00: TIMER-1 DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" DATA-1 = 10: Request for LTC USER BITS 74. 05: LTC UB DATA - DATA-1 thru DATA-4 same format as in "44. 05: Time Code Generator User Bit Preset" Data: Response: DATA-1 = 11: Request for LTC TIME & USER BIT DATA 78. 04: LTC TIME & UB DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" - DATA-5 thru DATA-8 same format as in "44. 05: Time Code Generator User Bit Preset" 78. 14: LTC INTERPOLATED TIME & UB DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" - DATA-5 thru DATA-8 same format as in "44. 05: Time Code Generator User Bit Preset" Note: Respond with 70. 0D: REQUEST TIME DATA MISSING if requested data is other than Timer-1 or Timer-2 data, and when following conditions exist: · Immediately after power-on and until tape starts moving · Cassette out · During loading or unloading Alesis M20 RS-422 Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16 60. 10 60. 11 In Data Sense Out Data Sense Request In/Out Point data Response: 75. 10: IN DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" 75. 11: OUT DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" 61. 20 Status Sense Request for status Data: DATA-1 (MS nibble=initial status byte to be sent back) (LS nibble=# of status bytes to be sent back) Response: 7X. 20: STATUS DATA - DATA-1 thru DATA-x (Status Bytes) Reference Appendix A Edit Preset Sense Data: DATA-1 (MS nibble=initial status byte to be sent back) (LS nibble=# of status bytes to be sent back) Response: 7x. 30: EDIT PRESET DATA - DATA-1 thru DATA-x (Status Bytes) Pre-roll Duration Sense Request Pre-roll time data Response: 74. 31: PREROLL TIME DATA - DATA-1 thru DATA-4 same format as in "24. 31: Cue Up With Data" 61. 30 60. 31 60. 36 Timer Mode Sense Request for setting of the Timer Mode (Timer-1 or Timecode) Response: 71. 36: TIMER MODE STATUS - DATA-1 = 00 for Timecode, =01 for Timer-1 (ABS) DA Sys Fs Sense Request digital audio channel sampling frequency Response: 71. 58: DA SAMPLING FREQ DATA - DATA-1: 01=48KHz; 02=44. 1KHz Chase Offset Sense Request Chase Offset value Response: 76. 78: CHASE OFFSET DATA - DATA-1=00 - DATA-2=Frame, DATA-3=Seconds, DATA-4=Minutes 60. 58 61. 78 Notes · In certain instances, the user may want to use ABS + SMPTE Offset instead of the TC track timecode when controlling the M20 via RS-422. If the Chase Reference = Tape TC, then the TC track timecode will be used and if the Chase Reference = ABS Time, then the ABS + SMPTE Offset will be used. [. . . ]