This page is not my work. I came across it some years ago when working on a
project to put a VT machine into record in the middle of the night. I found
it very useful - so put a link on my website to the owners page. My web statistics
soon reported it was the most used link. The original website disappeared some
time ago, so I've taken the liberty of putting a copy of it here. My thanks
to the author, who's name I never managed to record.
Updated 6/16/96. Fixed the Prog Speed formula. Added Tables. Added all group
20 descriptions, more info on status bits, and most of the group 40 commands.
This is the command table for the DVR-2000/2100. It is summarised here for
reference purposes only. If you want to order it from Sony call the Kansas City
supply center and hope you get someone who knows the part number for the
recorder whose protocol you want to use.
- 00 0C Local Disable
- Disables operation of the slave device from its control panel.
- 00 11 Device Type Request
- Slave Responds with
- 12 11 Device Type
- message, with 2 bytes of data:
| Model
| Data
|
| BVU-800
| 10 00
|
| BVW-10
| 2X 00
|
| BVW-11
| 2X 02
|
| BVW-15
| 2X 03
|
| BVW-35
| 2X 10
|
| BVW-40
| 2X 01
|
| BVW-50
| 2X 30
|
| BVW-60
| 2X 20
|
| BVW-65
| 2X 21
|
| BVW-95
| 2X 22
|
| BVW-96
| 2X 23
|
| BVW-70
| 2X 24
|
| BVW-75
| 2X 25
|
| BVW-D75
| 2X 46
|
| BVW-9000
| 2X 47
|
| PVW-2600
| 2X 40
|
| PVW-2800
| 2X 41
|
| BVW-35PM
| 20 18
|
| BVW-65PM
| 20 29
|
| BVW-95PM
| 20 2A
|
| BVW-75PM
| 20 2D
|
| BVW-85P
| 21 26
|
| BVW-70S
| 21 2C
|
| BVW-75S
| 21 2D
|
| WBR-700
| 21 2D
|
| DVR-2000
| 3X 10
|
| DVR-2100
| 3X 11 |
Where X=0 for NTSC/PAL-M (525) models and 1
for PAL/SECAM models.
- 00 1D Local Enable
- Enable operation of slave device from local panel according to the local
enable map set by the "4X B8" Local
Key Map command.
- 10 01 ACK
- Slave Sends this when it receives a command from Master.
- 11 12 NAK
- When a communication error is detected, the slave sends this command with
a "1" in the following position indicating the appropriate error condition:
| 7
| 6
| 5
| 4
| 3
| 2
| 1
| 0
|
| Time Out
| Framing Error
| Overrun Error
| Parity Error
| X
| Checksum Error
| X
| Undefined command |
- 20 00 Stop
- Slave stops current motion.
- 20 01 Play
- Slave Starts to play from current location. When the "Sync play" mode is
selected from the System menu on the slave, "Play" has the same effect as
20.34 "Sync
Play".
- 20 02 Record
- Slave begins recording. Exactly what happens depends on Auto Mode, record
lockout, and edit presets.
- 20 04 Standby Off
- Turns off standby mode. For VTR, this causes the machine to unthread in
stop. Affects EE/Tape selection. Available only in Stop mode.
- 20 05 Standby On
- Turns on standby mode. For VTR, this causes the machine to stay threaded
when in stop. Affects EE/Tape selection.
- 20 0F Eject
- When this command is received, the slave will eject the tape.
- 20.10 Fast Fwd
- When this command is received, the slave device will run in fast forward
mode. The speed depends on the VTR; for the DVR2000 series it is 50 x play
speed.
- 2X.11 Jog Forward
- 2X.12 Var Forward
- 2X.13 Shuttle Forward
- When these commands are received the slave device will move forward with
the speed indicated by DATA-1 and DATA-2.
When only DATA-1 is given, the speed will be given by
Tape Speed = 10^((N/32)-2) x play speed.
where N is the value of DATA-1. Some sample values are:
| Speed
| Speed Data
|
| 0.1
| 32 (20H)
|
| 1.0
| 64 (40H)
|
| 2.9
| 79 (4FH)
|
| 48.7
| 118 (76H) |
When a more precise speed value is required, then DATA-2 will be added. The
speed formula for this case is
Tape Speed = 10^((N/32)-2) + N'/256*(10^(((N+1)/32)-2)-10^((N/32)-2))
where N is the value of DATA-1 and N' is the value of DATA-2.
auth - in more standard terms, the formula says that DATA-2 is used to
linearly interpolate between the value given by N and that of N+1.
The maximum jog speed is set in the System:System menu. The maximum Var
speed is 3X play speed. The maximum shuttle speed is 50X play speed.
auth - There is considerable controversy over the minimum speed. For a
speed value of 0, the above formula with only DATA-1 gives 10^-2, or .01
x play speed. The standard states that when a speed between 0 and the minimum
is given, the slave moves at minimum speed. In fact, many editors and control
systems intend a "Shuttle 0" command ( 21 13 00 ) to pause the device and
have it stop without disengaging. Devices which fail to do so will creep
about 1 frame/second in this situation.
- 20 20 Rewind
- When it receives this command, the slave runs in reverse at maximum speed:
on the DVR2000, this is 50xplay speed.
- 2X 21 Jog Rev
- 2X 22 Var Rev
- 2X 23 Shuttle Rev
- When receiving one of the above commands, the slave will start running in
accordance with the speed data defined by DATA-1 and DATA-2. For the maximum
and minimum speed see the 2X.12 Shuttle
Fwd command.
- 20 30 Preroll
- When this command is received the slave will search to the preroll
position defined as the value obtained by subtracting the preroll time set by
the 44.31 Preroll
Time Preset command from the IN POINT data stored in the IN ENTRY memory
by the 40.10 In Entry
command.
- 24 31 Cue Up With Data
- Cues the slave to the indicated time. Time is formatted as follows:
data-1 data-2 data-3 data-4
| Frame | | Seconds | | minutes | | hours |
| 10 1 | | 10 1 | | 10 1 | | 10 1 |
auth - this is how time is represented in all commands and responses using
a time code. The numbers indicate that the 10s value is stored in the high
nibble and the 1s value in the low nibble. This is not to be confused with
the 80-bit SMPTE timecode which is present in the analogue timecode track
on tape, or with the VITC timecode.
- 20 34 Sync Play
- Prerolls the slave for the preset preroll time, then enters play mode.
- 21 38 Prog Speed Play +
- 21 39 Prog Speed Play -
- These commands play back the slave device in steps of 0.1% within the
range of +/- 25.5% of play speed. DATA-1 contains an 8-bit speed value. The
deviation from nominal play speed is
Deviation(%)=0.1 x speed value
- 20 40 Preview
- 20 41 Review
- 20 42 Auto Edit
- When one of these commands is received the slave goes into the indicated
mode.
This is all the spec states here. What actually happens is determined
by the edit presets, in and out point selections, and ee/tape settings.
Basically, all three set the device to the preroll position, and run at
play speed up to the in point. In Preview, the slave switches to EE mode
at the in point, and out at the out point, simulating the edit without disturbing
the recording media. In review, the slave simply continues to play at the
in point and rolls to the outpoint. In Auto Edit, the channels indicated
by the edit presets are put into record at the in point and the recording
proceeds to the out point.
- 20 43 Outpoint Preview
- Sends transport to preset out point if insert mode is preset.
- 2X 54 Anti-Clog Timer Disable
- Disables the anti-clog timer. This timer is responsible for unthreading
the tape upon timeout to save wear on the heads. If a system disables this
timer, it should take responsibility for head wear avoidance itself.
- 2X 55 Anti-Clog Timer Enable
- Enables anti-clog timer.
- 20 60 Full EE Off
- Clears all channels from EE mode regardless of EDIT PRESET channels assigned
by the 41.30 EDIT PRESET command. It takes the slave 5 frames
to perform this operation after it receives the command.
- 20 61 Full EE On
- Sets all channels to EE mode regardless of EDIT PRESET channels assigned
by the 41.30 EDIT PRESET command. It takes the slave 5 frames
to perform this operation after it receives the command.
- 20 63 Select EE On
- This command sets only the preset channels assigned by the 41.30
Edit Preset command to EE mode. The EE mode is cleared by the 20.64 Edit
Off command. It takes the slave 5 frames to perform this operation after
receiving the command.
- 20 64 Edit Off
- This command will stop recording without affecting the state of motion of
the device. Any channels in record will come out in response to this command,
after 5 frames of delay. This command also clears the Manual Edit Record mode
and the Select EE mode.
- 20 65 Edit On
- This command is used to actually initiate recording. When the device is
playing, and the edit presets set by the 4X 30 Edit
Preset command are in place, the preset channels will enter record a fixed
delay after this command is received. The slave will enter Edit Rec mode at
this point. It takes the slave 5 frames to enter Edit Rec after receiving this
command.
- 20 6A Freeze Off
- This command un-freezes the output of the device.
- 20 6A Freeze On
- This command freezes the output of the device. There is usually a 2-5 frame
delay associated with the actual freeze.
- 44 00 Timer-1 Preset
- Sets the Timer-1 value to the time code indicated by DATA-1 through DATA-4.
For the time format see the 24.31 Cue Up With Data command.
- 44 04 Time Code Preset
- Sets the Time Code Generator value to the time code indicated by DATA-1
through DATA-4. The data format is as per the 24.31 Cue Up With Data command, with two additional
bits to indicate Color Frame and Drop Frame mode as follows:
| Data-1 Bit 7
| CF
| Data-1 Bit 6
| DF
|
| 0
| Off
| 0
| Off
|
| 1
| On
| 1
| On |
- 44 05 User Bit Preset
- This command presets the value given by DATA-1 through DATA-4 to the User
Bits of the Time Code Generator
| DATA-1
|
| DATA-2
|
| DATA-3
|
| DATA-4
|
|
| MSD
| LSD
| MSD
| LSD
| MSD
| LSD
| MSD
| LSD
|
| Bin Grp 2
| Bin Grp 1
| Bin Grp 4
| Bin Grp 3
| Bin Grp 6
| Bin Grp 5
| Bin Grp 8
| Bin Grp 7 |
- 40 08 Timer-1 Reset
- Clears Tape timer 1 to 0
- 40 10 In Entry
- Sets the video in point to the value displayed on the slave. This is the
value of the selected tape timer.
- 40 11 Out Entry
- Sets the video out point to the value displayed on the slave. This is the
value of the selected tape timer.
- 40 12 Audio In Entry
- Sets the audio in point to the value displayed on the slave. This is the
value of the selected tape timer.
- 40 13 Audio Out Entry
- Sets the audio out point to the value displayed on the slave. This is the
value of the selected tape timer.
- 44 14 In Data Preset
- Set the Video In Point to the value indicated by DATA-1 thru DATA-4. The
time format is as per the 24.31
Cue Up With Data command.
- 44 15 Out Data Preset
- Set the Video Out Point to the value indicated by DATA-1 thru DATA-4. The
time format is as per the 24.31
Cue Up With Data command.
- 44 16 Audio In Data Preset
- Set the Audio In Point to the value indicated by DATA-1 thru DATA-4. The
time format is as per the 24.31
Cue Up With Data command.
- 44 17 Audio Out Data Preset
- Set the Audio Out Point to the value indicated by DATA-1 thru DATA-4. The
time format is as per the 24.31
Cue Up With Data command.
- 40 18 In + Shift
- Increments the Video in point by one frame.
- 40 19 In - Shift
- Decrements the Video in point by one frame.
- 40 1A Out + Shift
- Increments the Video out point by one frame.
- 40 1B Out - Shift
- Decrements the Video out point by one frame.
- 40 1C Audio In + Shift
- Increments the Audio in point by one frame.
- 40 1D Audio In - Shift
- Decrements the Audio in point by one frame.
- 40 1E Audio Out + Shift
- Increments the Audio out point by one frame.
- 40 1F Audio Out - Shift
- Decrements the Audio out point by one frame.
- 40 20 In Flag Reset
- 40 21 Out Flag Reset
- 40 22 Audio In Flag Reset
- 40 23 Audio Out Flag Reset
- Turn off the In Entry, Out Entry Audio In, and Audio Out lamps.
auth - do these have any effect on the status bits?
- 40 24 In Recall
- 40 25 Out Recall
- 40 26 Audio In Recall
- 40 27 Audio Out Recall
- Turn on the In Entry, Out Entry Audio In, and Audio Out lamps.
- 40 2D Lost Lock Reset
- Resets ( sets to 0 ) the Data-8/Bit-6 Lost Lock bit in the 7X.20 status data . The LOST LOCK status will be set
when the servo is unlocked in the Play, Rec, or Edit mode.
- 4X 30 Edit Preset
- This command is used for selecting the edit mode and selection of preset
audio and video channels. These values are used by the Edit On and Edit Off
commands.
| Byte
| 7
| 6
| 5
| 4
| 3
| 2
| 1
| 0
|
| DATA-1:
| X
| Insert
| Assemble
| Video
| X
| TC
| A2 (Cue)
| A1 (Cue)
|
| DATA-2:
| X
| X
| X
| X
| DA4
| DA3
| DA2
| DA1 |
when the 41.30 command is used, the audio
channels are set as per the table in the Edit:Setup menu. When the 42.30
command is used and Bit1 or Bit0 of Data-1 are "1", the Cue channel is
selected.
- 44 31 Preroll time preset
- Presets the preroll time given by DATA-1 thru DATA-4. Only the seconds
digit int DATA-2 is used, and must be in the range of 0-59. The time format is
as per the 24.31
Cue Up With Data command.
- 41 32 Tape/Auto Select
- the Tape/EE mode is selected by DATA-1 as follows:
Data-1 Mode
-----------------
00 Auto ( Tape/EE )
01 Tape
FF Follows the mode set in the STATE MAP on the SYSTEM menu in Local.
- 41 33 Servo Ref Select
- Selects the SERVO REFERENCE signal according to DATA-1:
DATA-1 State
-----------------
00 Auto
01 External
02 Input
FF Follows the mode set in REFERENCE on the SYSTEM:SYSTEM menu in Local.
- 41 34 Head Select
- auth - this command is not implemented by the DVR2000, but many other
systems use it to to select playback/record heads. On the DVR2000 the
selection is automatic.
- 41 35 Color Frame select
- Sets the COLOR FRAME mode of the servo system according to DATA-1:
DATA-1 State
-----------------
01 2 Field
02 4 Field
03 8 Field
FF Follows the mode set in LOCK FIELD on the SYSTEM:SYSTEM menu in Local.
- 41 36 Timer Mode Select
- Selects the TIMER system used in AUTO mode, and for display of the IN
ENTRY, OUT ENTRY, IN PRESET, OUT PRESET, PREROLL, and CUE UP WITH DATA, etc.
according to DATA-1:
DATA-1 Mode
-----------------
00 TIME CODE
01 TIMER-1
02 TIMER-2
FF Follows the mode set in F6:CRNT TM on the HOME menu in Local.
- 41 37 Input Check
- Switches the INPUT CHECK mode on/off as per DATA-1:
DATA-1 Mode
00 INPUT CHECK off
01 INPUT signals sent out VIDEO and MONITOR AUDIO OUTPUT connectors.
- 41 3A Edit Field Select
- Assigns the field on which to start the EDIT as per DATA-1:
DATA-1 Mode
-------------
00 Field1/Field2: The edit will start on the field the command
was received on
01 Field 1
02 Field 2
FF Follows the mode set in F4:TIMING on the EDIT SETUP menu in Local.
The following commands use the field selection:
- 41 3B Freeze Mode Select
- Assigns the contents of the freeze picture to be field or frame as per
DATA-1:
DATA-1 Mode
------------
00 Field-1 or Field-2 ( not fixed )
01 Field 1
10 Field 2
11 Frame
- 4X 3E Record Inhibit
-
- 40 40 Auto Mode Off
- 40 41 Auto Mode On
- These commands switch the AUTO mode off and on.
- 40 42 Spot Erase Off
- 40 43 Spot Erase On
- These commands switch the spot erase mode off and on.
- 40 44 Audio Split Off
- 40 45 Audio Split On
- These commands switch the audio split mode off and on.
- 4X 98 Output H Phase
- Sets the output Horizontal phase. The 40.98 command sets the H Phase to 0,
whereas the 41.98 command sets the H phase according to
H Phase = DATA_1 * 148 nsec
where DATA_1 is interpreted as a twos complement binary number in the
range of -127 to 127.
- 4X 9B Output Video Phase
- Sets the output sync phase. The 40.9B command sets the output sync phase
to 0 whereas the 41.9B command sets the output sync phase according to
Sync Phase = DATA_1 * 74 nsec
where DATA_1 is interpreted as a twos complement binary number in the
range of -127 to 127.
- 4X A0 Audio Input Level
- Controls the audio input level. The control mode is assigned by bit 7 of
DATA-1. , and the channel to be controlled is assigned by bit 6 to bit 0 of
DATA-1. When the 41 A0 command is received, the audio input levels of the
channels assigned by DATA-1 will be set to their reference levels. When CMDLEN
is not 1, the level data will be composed of two bytes per assigned channel
in the order DA1, DA2, DA3, DA4, CUE. The DATA-1 bits look like:
| Bit
| 7
| 6
| 5
| 4
| 3
| 2
| 1
| 0
|
| Value
| Mode
| X
| X
| Cue
| DA4
| DA3
| DA2
| DA1 |
For Example, when the DATA-1 is 0x11, the
command looks like:
| DATA-1
| DATA-2
| DATA-3
| DATA-4
| DATA-5
|
| 11
| DA1 LSB
| DA1 MSB
| CUE LSB
| CUE MSB |
The level data are interpreted as per the
formula: Input Level = 20 log [(Level Data)/(4000h)] (dB)
Which gives coverage over the range of +12dB to -infinity.
- 4X A1 Audio Output Level
- Controls the audio output level. When the 41 A1 command is received, the
audio output level of the channels selected in DATA-1 will be set to the
reference level. Otherwise, it operates as per the 4X.A0
Audio input level command.
- 4X A2 Audio Adv Level
- Controls the audio advance level. When the 41 A2 fixed doc error here
command is received, the audio advance level of the channels selected
by DATA-1 will be set to the reference level. Otherwise, it operates as per
the 4X.A0 Audio input level command.
- 4X A8 Audio Output Phase
- Sets the audio output phase. The 42.A8 command determines the audio output
phase according to the 16-bit value encoded with the low byte in DATA-1 and
the high byte in DATA-2. The values are interpreted as 2s complement binary,
and currently have a range of +/- 80 samples. When the 40.A8 command is received,
the slave will set the audio output phase to its nominal value.
- 4X A9 Audio Adv Out Phase
- Sets the Advance audio output phase. The 42.A9 command determines the
audio advance phase according to the 16-bit value encoded with the low byte in
DATA-1 and the high byte in DATA-2. The values are interpreted as 2s
complement binary, and currently have a range of +0/-50 samples. the 40.A9
will set the audio advance phase to its nominal value.
- 4X AA Cross Fade Time Preset
-
- 4X B8 Local Key Map
- When the slave receives the 00.1D Local Enable command, the control panel
may be used according to the local key map that was set by this command. When
the slave receives the 00.0C Local Disable command all the keys, buttons, and
adjustment controls on the control panel are disabled. The Eject button can
always be used. If the slave receives the 41.B8 command, the local key map is
preset by the block level in accordance with DATA-1. IF it receives the 4X.B8
command ( X > 2 ) The local key map is preset by the Switch level.
Block Level switches:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Tracking Monitor Audio Video Transport
Control Control Control Control Control
"1": This function will be enabled when in remote
"0": This function will be disabled in remote.
When DATA-2 or more are added, control data with two bytes per each block
assigned by DATA-1 are added following DATA-1.
At present the transport switches are defined as follows:
| Bit
| 7
| 6
| 5
| 4
| 3
| 2
| 1
| 0
|
| 1st Byte
| Execute
| Preroll
| Search
|
| Rec
| Play
| Stop
| Standby
|
| 2nd Byte
|
|
|
|
|
| Var
| Jog
| Shuttle |
None of the other blocks have any switches assigned, but rather operate as
follows:
Video Control: Video phase and Sync phase can be adjusted on the system
menu in remote mode.
Audio Control: Audio levels and output phase can be adjusted on the
Audio:DA out menu in remote mode.
Monitor Control: the wfm monitor output selection on the system:wfm monitor
menu and the monitor level adjustments and monitor out selection on the
system:audio monitor menu can be adjusted in remote mode.
Tracking Control: Tracking adjustments in the system:tracking menu can be
made in remote mode.
- 42 F8 Still Off time
-
- 42 FA Standby Off time
-
- 61 0A TC Gen Sense
-
- 60 10 In Data Sense
-
- 60 11 Out Data Sense
-
- 60 12 Audio In Data Sense
-
- 60 13 Audio Out Data Sense
-
- 61 0C Current Time Sense
- Requests the TIME DATA or USER BITS. Slave responds as per DATA-1:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
VITC LTC TIMER 2 TIMER 1 VITC LTC
UB UB TIME TIME
That is to say that the response follows the bit set in DATA-1 as per
the following table
Now, when requesting
timecode, the results depend on the tape speed because at very low speeds (
less than .25 play speed ) it may not be possible to recover timecode.
However, if VITC is present, that may be used instead. To automate this
decision process, Sony has provided the special 61.0C.03 command which will
return the best source of time code as per the table below. Note that when
both LTC and VITC are not good you get back the 74.14 corrected LTC data. In
this case, the time is actually the last good LTC time corrected by the tape
timer.
Tape speed > .25
Tape speed < .25
- 61 20
Status Sense
- When the slave receives a 61.20 Status Sense command, it will respond with
a 74
20 Status Data response. The starting byte number and number of bytes
requested are encoded in DATA-1, with the starting reg in the high nibble
(bits 7-4) and the requested byte count in the low nibble ( bits 3-0 ).
- 61 21 Extended VTR Status
-
- 62 23 Signal Control Sense
-
- 6X 28 Local Key Map Sense
-
- 61 2A Head Meter Sense
-
- 60 2B Remaining Time Sense
-
- 60 2E Cmd Speed Sense
-
- 61 30 Edit Preset Sense
-
- 60 31 Preroll Time Sense
-
- 60 36 Timer Mode Sense
-
- 60 3E Record Inhibit Sense
-
- 60 52 DA Inp Emph Sense
-
- 60 53 DA PB Emph Sense
-
- 60 58 DA Samp. Freq. Sense
-
- 61 AA Cross Fade Time Sense
-
- 74 00 Timer-1 Data
- DATA-1 thru DATA-4 contain the timer-1 data formatted as per the 24.31
Cue up with data command
- 74 01 Timer-2 Data
- DATA-1 thru DATA-4 contain the timer-2 data formatted as per the 24.31
Cue up with data command
- 74 04 LTC Time Data
- DATA-1 thru DATA-4 contain the LTC data formatted as per the 24.31
Cue up with data command
- 74 05 User Bits (LTC) Data
- DATA-1 thru DATA-4 contain the LTC User bits data formatted at per the 44.05
User Bit Preset command.
- 74 06 VITC Time Data
- DATA-1 thru DATA-4 contain the VITC data formatted as per the 24.31
Cue up with data command
- 74 07 User Bits (VITC) Data
- DATA-1 thru DATA-4 contain the VITC User bits data formatted at per the 44.05
User Bit Preset command.
- 74 08 Gen Time Data
- DATA-1 thru DATA-4 contain the Time code generator data formatted as per
the 24.31
Cue up with data command
- 79 09 Gen User Bits Data
- DATA-1 thru DATA-4 contain the Time code generator User bits data
formatted at per the 44.05
User Bit Preset command.
- 74 10 In Data
-
- 74 11 Out Data
-
- 74 12 Audio In Data
-
- 74 13 Audio Out Data
-
- 74 14 Corrected LTC Time Data
-
- 74 15 Hold User Bits (LTC) Data
-
- 74 16 Hold VITC Time Data
-
- 74 17 Hold User Bits (VITC) Data
-
- 74 20 Status Data
- When the slave receives a 61.20 Status Sense command, the following data
will be sent back in response according to the request:
| Byte No.
| 7
| 6
| 5
| 4
| 3
| 2
| 1
| 0
|
| 0
| X
| X
| Tape Out
| Servo Ref Missing
| X
| X
| X
| Local
|
| 1
| Standby
| X
| Stop
| Eject
| Rewind
| Fast Fwd
| Record
| Play
|
| 2
| Servo Lock
| TSO Mode
| Shuttle
| Jog
| Var
| Tape Dir
| Still
| Cue Up
|
| 3
| Auto Mode
| Freeze On
| X
| CF Mode
| A Out
| A In
| Out
| In
|
| 4
| Select EE
| Full EE
| X
| Edit
| Review
| Auto Edit
| Preview
| Preroll
|
| 5
| X
| Insert
| Assemble
| Video
| A4
| A3
| A2
| A1
|
| 6
| X
| Lamp Still
| Lamp Fwd
| Lamp Rev
| Srch LED 8
| Srch LED 4
| Srch LED 2
| Srch LED 1
|
| 7
| X
| X
| Aud Split
| Sync Act
| X
| Spot Erase
| X
| In/Out
|
| 8
| Buzzer
| Lost lock
| Near EOT
| EOT
| CF Lock
| Svo Alarm
| Sys Alarm
| Rec Inhib
|
| 9
| Fnc Abort
| X
| X
| X
| X
| X
| X
| X |
Description of Bits:
- Data 0:
-
- Bit 5: Tape Unthreaded (Cassette Out) When the tape is threaded, this
is 0. When it is completely unthreaded this is 1. When threading or
unthreading, who knows what it is.
- Bit 4: Servo Ref Missing When servo reference is absent this is 1.
- Bit 0: Local When remote operation is inhibited by the "remote/local"
switch on the panel this is 1.
- Data 1:
-
- Bit 7: Standby When the tape is threaded and the scanner is locked but
the tape is stopped, this is 1.
- Bit 5: Stop When the machine is in full stop, this is 1. The thread
state depends on the tape/ee and standby settings.
- Bit 4: Eject When the tape is ejecting this is 1.
- Bit 3: Rewind When the machine is in fast reverse this is 1.
- Bit 2: Fast Fwd When the machine is in fast forward this is 1.
- Bit 1: Record This bit goes from 0 to 1 some number of frames after
the machine starts recording. For the DVR2000 we measured 5 frames. Others
have varying delays on the record status.
- Bit 0: Play This bit goes from 0 to 1 some number of frames after the
machine starts playing. For the DVR2000 we measured 5 frames. Others have
varying delays on the play status.
- Data 2:
-
- Bit 7: Servo Lock 1 indicates servos are locked. This is a necessary
condition for an edit to occur correctly.
- Bit 6: TSO Mode Bit is 1 in tape speed override: in this mode, audio
and video are still locked though speed is off play speed by +/- up to
15%.
- Bit 5: Shuttle
- Bit 4: Jog
- Bit 3: Var
- Bit 2: Tape Dir
- Bit 1: Still
- Bit 0: Cue Up
- Data 3:
-
- Bit 7: Auto Mode
- Bit 6: Freeze On
- Bit 4: CF Mode
- Bit 3: A Out
- Bit 2: A In
- Bit 1: Out
- Bit 0: In
- Data 4:
-
- Bit 7: Select EE
- Bit 6: Full EE
- Bit 4: Edit
- Bit 3: Review
- Bit 2: Auto Edit
- Bit 1: Preview
- Bit 0: Preroll
- Data 5:
-
- Bit 6: Insert
- Bit 5: Assemble
- Bit 4: Video
- Bit 3: A4
- Bit 2: A3
- Bit 1: A2
- Bit 0: A1
- Data 6:
-
- Bit 6: Lamp Still
- Bit 5: Lamp Fwd
- Bit 4: Lamp Rev
- Bit 3: Srch LED 8
- Bit 2: Srch LED 4
- Bit 1: Srch LED 2
- Bit 0: Srch LED 1
- Data 7:
-
- Bit 5: Aud Split
- Bit 4: Sync Act
- Bit 2: Spot Erase
- Bit 0: In/Out
- Data 8:
-
- Bit 7: Buzzer
- Bit 6: Lost lock This bit is controlled by the
Lost Lock Reset command. It is set when the servos
are unlocked in the PLAY, REC, or EDIT modes.
- Bit 5: Near EOT
- Bit 4: EOT
- Bit 3: CF Lock
- Bit 2: Svo Alarm
- Bit 1: Sys Alarm
- Bit 0: Rec Inhib
- Data 9:
-
auth - here's a code snippet for you c-heads. char *StatusBitStrings[][8] =
{
// Data 0
{" "," ","Unthread ","Svo Ref ",
" "," "," ","Local "},
// Data 1
{"Standby "," ","Stop ","Eject ",
"Rewind ","Fast Fwd ","Record ","Play "},
// Data 2
{"Servo Lock","TSO Mode ","Shuttle ","Jog ",
"Variable ","Tape Rev ","Still ","Cue "},
// Data 3
{"Auto Mode ","Freeze On "," ","CF Mode ",
"A Out ","A In ","Out ","In "},
// Data 4
{"Select EE ","Full EE "," ","Edit ",
"Review ","Auto Edit ","Preview ","Preroll "},
// Data 5
{" ","Insert ","Assemble ","Video ",
"A4 ","A3 ","A2 ","A1 "},
// Data 6
{" ","Lamp Still","Lamp Fwd ","Lamp Rev ",
"Srch LED 8","Srch LED 4","Srch LED 2","Srch LED 1"},
// Data 7
{" "," ","Aud Split ","Sync Act ",
" ","Spot Erase"," ","In/Out "},
// Data 8
{"Buzzer ","Lost lock ","Near EOT ","EOT ",
"CF Lock ","Svo Alarm ","Sys Alarm ","Rec Inhib "},
// Data 9
{"Fnc Abort "," "," "," ",
" "," "," "," "},
};
The Status bits communicate much about the progress of a motion command. The
precise timing of each signal varies almost from machine to machine, and many
edit controlers expect certain timing behaviour of these signals. Herein lie
many of the problems associated with edit controllers, edit timing, and just
plain wacky transport behaviour.
- 7X 21 Extended Status Data
-
- 7X 23 Signal Control Data
-
- 7X 28 Local Key Map
-
- 7X 2A Head Meter Data
-
- 76 2B Remaining Time
-
- 7X 2E Cmd Speed Data
-
- 7X 30 Edit Preset Status
-
- 74 31 Preroll Time
-
- 71 36 Timer Mode Status
-
- 72 3E Record Inhibit Status
-
- 71 52 DA Input Emphasis Data
-
- 71 53 DA Playback Emphasis Data
-
- 71 58 DA Sampling Frequency Data
-
- 7X AA Cross Fade Time Data
-
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