JVC SR-L910EK Optional SA-K97U RS-232C Interface Board, SA-K97U RS-232C Protocol & Commands

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10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD

10-3. SA-K97U RS-232C Protocol & Commands

This section provides technical data for programmers.

Command description

To use the commands described in the following pages, prepare the VCR for communications as follows:

Transmit the command “JVC TABLE 1 ON” (F6H) to the VCR. The VCR will return “ACK” (0AH). The VCR can now receive any command described in this section. To cancel the communications mode, transmit the command “JVC TABLE 1 OFF” (F7H).

2-1 VCR control commands

10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD

After transmitting the VISS SEARCH command (17), transmit the appropriate 2-byte numeric data (from 30H to 39H), the data input command

(40H), and either FF (ABH) or REW (ACH). All commands should be transmitted separately one byte at a time with “ACK” (0AH) confirmation

from the VCR after each transmission.

 

(17) VISS SEARCH (B3H)

: To search for a designated INDEX point on the tape.

The VCR starts INDEX search after returning “ACK”. When the specified point is reached, the VCR returns COMPLETION (01H). If the end

or beginning of the tape is reached before the specified point, the VCR returns NOT TARGET (05H).

This command differs from commands (15) and (16) only in that the FF (ABH) or REW (ACH) command is included separately.

2-2 VCR setting commands

 

Commands available include control of recording/playback mode setting, timelapse VCR operation mode setting, date and time setting, timer

programming, on-screen setting, and others.

5Recording/playback mode setting commands

Two commands are available. One allows you to rotate through recording/playback modes, the other permits you to directly select the mode.

Commands (1) through (12) are (0AH) has been returned before

(1)OPERATE ON (7BH) OPERATE OFF (7CH)

(2)PLAY (3AH)

(3)STILL (4FH)

(4)STOP (3FH)

(5)FF (ABH)

(6)REW (ACH)

(7)REV PLAY (4AH)

(8)TIMER ON (60H) TIMER OFF (61H)

(9)OPE LOCK ON (69H) OPE LOCK OFF (6AH)

(10)EJECT (A3H)

(11)F-FIELD STEP (ADH)

(12)REC CHECK (C1H)

Before transmitting either of the returned by the VCR.

(13)REC (CAH)

(14)REC PAUSE (CBH)

1-byte commands. The VCR will return “ACK” (0AH) when the command is received. Confirm that “ACK” transmitting the next command.

:VCR operating mode is turned “ON”.

:VCR operating mode is turned “OFF”.

:Playback

:Pause/Still

:Stop

:FF/Forward search in the Play mode. (INDEX Search when Menu switch <INDEX SRCH> is set to ON.)

:REW/Reverse search in the Play mode. (INDEX Search when Menu switch <INDEX SRCH> is set to ON.)

:Reverse playback at normal speed

:Timer “ON”

:Timer “OFF”

:Operation lock “ON”

:Operation lock “OFF”

:Cassette ejection

VCR returns “ACK”, and then returns CASSETT OUT (03H) after cassette has been ejected.

:Engages field advance when the VCR is in the Still mode. The tape is advanced by one field in the 3H/Timelapse mode.

If the VCR is in any other mode, the Still mode is engaged.

:Engages REC CHECK. (function is the same as when locally controlled on the VCR.)

following commands ((13) or (14)), first transmit REC/DUB REQUEST (FAH), and confirm that “ACK” is

:Starts recording. The VCR returns “ACK”.

:Engages Record-Pause mode. The VCR returns “ACK”.

•To re-start recording, transmit REC (FAH+CAH).

•To cancel Record-Pause, transmit STOP (3FH). The VCR will enter the Stop mode.

(1)

MODE SHIFT (7DH)

:

Switches from one recording/playback mode to the next each time the command is transmitted.

 

 

 

 

 

 

 

 

Use the TL STATUS SENSE (D6H) command to check the current mode. (See section 2-3 (8).)

 

 

 

 

 

 

 

 

Transmit 1 byte at a time with “ACK” (0AH) confirmation from the VCR after each transmission.

(2)

MODE (7EH)

 

 

 

 

:

Sets recording/playback mode directly.

 

 

 

 

 

 

 

 

 

 

 

 

After transmitting this command, transmit the appropriate 2-byte ASCII codes (from 30H to 39H)

 

 

 

 

 

 

 

 

and the data input command (40H). Correspondence of ASCII codes with recording/playback

 

 

 

 

 

 

 

 

modes is as shown below.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Modes in parentheses are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

available only in the Play mode.

Eg: To set to “L24H”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode

1st byte

2nd byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SP

30H

30H

 

 

7EH

 

30H

 

 

 

 

33H

 

 

 

40H

 

 

 

Time

(LP

30H

31H)

 

 

RXD

 

 

0AH

 

 

 

 

0AH

 

 

0AH

 

 

 

0AH

 

 

L12H

30H

32H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L24H

30H

33H

5Timelapse VCR operation mode setting commands

(1)

TL STATUS SET (86H)

: Set the timelapse VCR operation mode with 3-byte data. Send one byte at a time by checking

 

 

ACK (0AH) from the VCR.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

86H

 

 

 

1st byte

 

 

 

2nd byte

 

 

 

3rd byte

 

 

 

Time

 

 

 

RXD

 

 

0AH

 

 

0AH

 

 

 

0AH

 

 

 

0AH

 

•The setting details for the first to the third bytes are shown below.

However, if the loaded cassette’s safety tab has been removed, recording is not possible regardless of the fact that “ACK” has been

returned. Use the STATUS SENSE (D7H) command to confirm tape status. (See Section 2-3 (9)).

 

After transmitting commands VISS FWD (15) or VISS REV (16), transmit the appropriate numeric data (1-byte ASCII codes from 30H to 39H)

and the data input command (40H).

 

 

 

 

 

 

 

 

ASCII codes “30H – 39H” correspond with the numbers “0 – 9” (ie.: 0: 30H, 1: 31H, ... 9: 39H).

 

Each byte of numeric data and the data input command should be transmitted separately with “ACK” (0AH) confirmation from the VCR after

each transmission. The VCR’s Menu switch <INDEX SRCH> is set to OFF.

 

 

 

(15)

VISS FWD (B0H)

 

: To advance the tape in the forward search mode to the designated alarm-input point. The alarm

 

 

 

 

 

 

point’s 2-byte numeric data should be input after transmission of this command.

(16)

VISS REV (B1H)

 

: To reverse the tape in the reverse search mode to the designated alarm-input point. The alarm

 

 

 

 

 

 

point’s 2-byte numeric data should be input after transmission of this command.

Eg: To search for the 3rd alarm-input point from the current position.

 

 

 

TXD

B0H

 

 

 

 

 

 

 

 

 

 

 

30H

 

 

33H

 

40H

 

 

Time

RXD

 

0AH

 

0AH

 

0AH

0AH

Search start

01H (or

05H)

 

 

 

 

 

 

 

 

 

 

 

 

The VCR starts INDEX search after returning “ACK”. When the specified point is reached, the VCR returns COMPLETION (01H). If the end

or beginning of the tape is reached before the specified point, the VCR returns NOT TARGET (05H). (Sending either the 30H,30H or

30H,31H command will cause the VCR to search for the 1st alarm-input point).

 

 

1st byte

 

2nd byte

 

BIT

When the bit is “1”

BIT

When the bit is “1”

0

Repeat recording function ON

0

Unused

1

Unused

1

Alarm recording function ON

2

Auto REC mode ON

2

Unused

3

Auto rewind ON

3

Sensor recording function ON

4

Unused

4

External recording function ON

5

Series recording function ON

5

Unused

6

Tape end buzzer ON during recording

6

Index search function ON

7

Alarm recording buzzer ON

7

Warning buzzer ON

3rd byte

 

 

 

BIT

When the bit is “1”

 

 

0Unused

1Summer time compensation ON

2Unused

3Unused

4Unused

5Video mode set to “B/W” (black and white)

6Unused

7Unused

48

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Contents LLT0014 Victor Company of JAPAN, LimitedLLT0014-001A-H RS-232CFor Your Safety Australia Safety Precautions Operation LockConnection to the mains supply DanishContents Periodical Maintenance Major FeaturesIntroduction IntroductionFront Panel Controls and ConnectorsSeries recording signal output Mark in the Rec/Pause mode is shown in redClock reset signal output Rear PanelConnections Connecting to a CameraConnecting the Rear Panel Input/Output Terminal Connections Connecting a System Using a Sequential SwitcherOn-Screen Display in the Time/Date and Record Modes Monitor ON-SCREEN DisplayMonitor ON-SCREEN Display Main Menu DisplayHour Meter Display Function Menu Switch SettingPreparation 1OperationScreens Items Contents of the Function Menu SwitchesScreens Items Set values Preparation Date and Time SettingCassette Loading/Unloading LoadingPreparation Selection of Record/Play ModeSummer Time Compensation Preparation RecordingRecording RecordingSetting the daily timer Timer RecordingAlarm input during timer recording Setting the weekly timerCanceling timer programming 1Changing a preset timer programTimelapse Alarm Alarm RecordingAlarm Timelapse Recording Recording Alarm signal inputSensor Recording Series Recording Repeat RecordingConnections 1OperationsExternal Timer Recording Recording with External VCR Activation SignalHow to Restore Recording After Power Failure Tape End BuzzerPlayback Playback and SPECIAL-EFFECTS PlaybackSpecial-Effects Playback Tracking/V. Lock Adjustment TroubleshootingContents VCR operation Measures When the picture moves up and down in the Still modeNo Error Indication TroubleshootingPin connector specifications SA-K97U SpecificationsData format RS-232C protocolCommand description SA-K97U RS-232C Protocol & CommandsVCR control commands VCR setting commands5th byte Commands for VCR status verification4th byte 6th byte Contents of 5th byte BIT 0/1/2/3 Speed Code Commands reference chart4th byte CAM SW OUT camera switching signal output SpecificationsOther input/output terminal signal levels Appendixes
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