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10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD
2-4 Others (Input data correction/Error cancellation)
These are return codes from the SR-L911UB. (Error-related codes only)
(1) ERROR (02H) : This is returned when commands of more than 1 byte are transmitted to the VCR and an illegal command is
received in the 2nd byte (or later) of the transmitted command.
In this status, no command can be accepted and only STATUS SENSE will be returned.
To restore normal operation, transmit CLEAR ERROR (41H) or CLEAR (56H) to the VCR.
CLEAR ERROR (41H) : Used to cancel previously-transmitted 1-byte numeric data when inputting
numeric data such as an Index search point. Also used to cancel error status.
CLEAR (56H) : Clears the whole command. Cancels the current status and stops the VCR. Also
cancels the error status.
Eg : After setting the recording/playback mode to “L24H”, 32H is mistakenly transmitted . Cancel 32H with
“41H” and input “33H” instead.
(2) NAK (0BH) : VCR will return this code when non-defined or non-functional command is received in the 1st byte of the
transmitted command. In this case, it is not necessary to input CLEAR. Check whether the transmitted command
is acceptable to the VCR or not.
TXD
7EH 30H 32H
RXD
0AH 0AH 0AH
Time
41H
0AH
33H
0AH
40H
0AH
3 Commands reference chart
VCR setting commands
Page
5 Recording/playback mode 47
MODE SHIFT 47
MODE 47
5 Timelapse VCR operation mode 47
TL STATUS 47
5 Date and time setting 48
DATE SET 48
TIME SET 48
5 Timer programming 48
PRG 48
SHIFT –/+ 48
SET –/+ 48
CANCEL 48
5 On-screen setting 48
ON SCREEN ON/OFF 48
ON SCREEN SELECT 48
5 Others 48
AL/PL RESET 48
COUNT RESET 48
VCR control commands
Page
OPERATE ON/OFF 46
PLAY/REV PLAY 46
STOP 46
FF/REW 46
TIMER ON/OFF 46
OPE ON/OFF 46
EJECT 46
F-FIELD STEP 46
REC CHECK 46
REC/REC PAUSE 46
VISS FWD/REV 46
VISS SEARCH 47
Commands for VCR status verification
Page Byte returned
from VCR
COUNT CODE 49 4 bytes
DEVICE TYPE 49 4 bytes
VTR INQ 49 1 byte
PL/AL COUNT SENSE 49 6 bytes
HOUR METER SENSE 49 5 bytes
TL STATUS SENSE 49 6 bytes
STATUS SENSE 50 5 bytes
DATA SENSE 49 6 bytes
TIME SENSE 49 6 bytes
Others
Page
JVC TABLE 1 ON/OFF 46
Return codes from VCR
Page
ACK 46
NAK 51
ERROR 51
CASSETTE OUT 46
COMPLETION 46
NOT TARGET 46
ALARM INPUT 50