JVC SR-9090U Others Input data correction/Error cancellation, Commands reference chart, 4th byte

9 OPTIONAL SA-K97U RS-232C INTERFACE BOARD

(9) STATUS SENSE (D7H)			: The VCR will return current status information in 5 bytes.
	1st byte
	BIT		Status when BIT is “1”.
0		Error	Indicates that an illegal command has been received. No further commands will be accepted.
			To restore to normal operation, transmit CLEAR ERROR (41H) to the VCR.
1		Not defined	Always 0.
2		Not defined	Always 0.
3		Cassette out	The tape has not been loaded.
4		REC inhibit	A tape with no safety tab has been loaded. In this case, no recording commands
			will be accepted.
5		Not defined	Always 0.
6		Not defined	Always 0.
7		Not defined	Always 1.
	2nd byte
	BIT		Status when BIT is “1”.
0		Tape End	Tape end sensor is detected.
1		Tape Begin	Tape begin sensor is detected.
2		Not defined	Always 0.
3		Warning	VCR malfunction.*
4		Not defined	Always 0.
5		Not defined	Always 0.
6		A EE Mode	An externally-input audio signal is being output.
7		V EE Mode	An externally-input video signal is being output.

9 OPTIONAL SA-K97U RS-232C INTERFACE BOARD

4 Others (Input data correction/Error cancellation)

These are return codes from the SR-9090U. (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 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.

TXD

7EH

30H

32H

41H

33H

40H

Time

RXD

0AH

0AH

0AH

0AH

0AH

0AH

(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.

3rd byte
BIT				Status when BIT is “1”.
0	Not defined			Always 0.
1	Search Mode			Search is in progress. (VISS)
2	Repeat Mode			Repeat recording is in progress.
3	Not defined			Always 0.
4	Repeat			VCR’s REPEAT REC menu switch is set to ON.
5	Counter			Counter memory is set to ON.
6	Timer REC ON			VCR’s TIMER button is set to ON.
7	Not defined			Always 0.
4th byte
BIT				Status when BIT is “1”.
0	Not defined			Always 0.
1	REC Mode			VCR is in the Record mode.
2	Eject			A cassette is being ejected.
3	Not defined			Always 1.
4	Stop Mode			VCR is in the Stop mode.
5	REW Mode			VCR is in the Rewind mode.
6	FF Mode			VCR is in the Fast-Forward mode.
7	PB Mode			VCR is in the Play mode.
5th byte
BIT				Status when BIT is “1”.
0	Speed Code 0			VCR’s current tape running mode. See below.
1	Speed Code 1			VCR’s current tape running mode. See below.
2	Speed Code 2			VCR’s current tape running mode. See below.
3	Speed Code 3			VCR’s current tape running mode. See below.
4	Shuttle REV			Reverse search is in progress.
5	Shuttle FWD			Forward search is in progress.
6	Not defined			Always 0.
7	Rec-Pause Mode			VCR is in the Pause mode.
Contents of 5th byte BIT 0/1/2/3 “Speed Code”
Speed Code		3	2	1	0
	BIT	0	0	0	0	Still
		0	0	0	1	Timelapse playback
		0	1	0	1 Timelapse recording/2H (SP)/6H (EP) playback
		1	0	0	0 Search (X7 or X13)
		1	0	0	1	Search (X21)

*When an error occurs in the VCR and the Warning mode is engaged, the third bit of the second byte sent back with the STATUS SENSE (D7H) is set to “1”, showing the warning status.

In this case, release the warning via the RS-232C with the CLEAR (56H). To release it on the VCR, turn the [OPERATE] button off and on again.

(10) ALARM INPUT (06H)	: SR-9090U return code
	This is returned when an alarm signal is input during recording.

3 Commands reference chart

VCR control commands

	Page
OPERATE ON/OFF	58
PLAY/REV PLAY	58
STOP	58
FF/REW	58
TIMER ON/OFF	58
OPE ON/OFF	58
EJECT	58
F-FIELD STEP	58
R-FIELD STEP	58
REC CHECK	58
REC/REC PAUSE	58
VISS FWD/REV	58
VISS SEARCH	59

Commands for VCR status verification

	Page	Byte returned
		from VCR
COUNT CODE	61	4 bytes
DEVICE TYPE	61	4 bytes
VTR INQ	61	1 byte
PL/AL COUNT SENSE	61	6 bytes
HOUR METER SENSE	61	4 bytes
TL STATUS SENSE	61	6 bytes
STATUS SENSE	62	5 bytes
DATE SENSE	61	6 bytes
TIME SENSE	61	6 bytes

VCR setting commands

	Page
5Recording/playback mode	59
MODE SHIFT	59
MODE	59
5Timelapse VCR operation mode	59
TL STATUS SET	59
5Date and time setting	60
DATE SET	60
TIME SET	60
5Timer programming	60
PRG/CLK	60
SHIFT –/+	60
SET –/+	60
CANCEL	60
5On-screen setting	60
ON SCREEN ON/OFF	60
ON SCREEN SELECT	60
POS V+	60
POS H+	60
5Others	60
AL/PL RESET	60
COUNT RESET	60
Return codes from VCR
	Page
ACK	58
NAK	63
ERROR	63
CASSETTE OUT	58
COMPLETION	58
NOT TARGET	58
ALARM INPUT	62
Others
	Page
JVC TABLE 1 ON/OFF	58

62 63