JVC SR-9240EK appendix VCR setting commands, Mode 1st byte 2nd byte, 3rd byte

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.

(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.

Eg: To set to “L24H”.

TXD	7EH		30H		33H		40H		Time
RXD		0AH		0AH		0AH		0AH

Modes in parentheses are available only in the Play mode.

Mode	1st byte	2nd byte
SP	30H	30H
(LP	30H	31H)
L12H	30H	32H
L24H	30H	33H
48H	30H	34H
72H	30H	35H
96H	31H	36H
120H	30H	37H
168H	30H	38H
240H	30H	39H

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
RXD		0AH		0AH		0AH		0AH

Time

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

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”
0		Unused
1		Summer time compensation ON
2		Unused
3		Unused
4		Unused
5		Video mode set to “B/W” (black and white)
6		Unused
7		Unused

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