JVC SR-L910UA - 24 Hour Time Lapse Vcr Instructions Manual page 49

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)
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.
5 Recording/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)
(2) MODE (7EH)
Eg: To set to "L24H".
TXD
7EH
RXD 0AH
5 Timelapse VCR operation mode setting commands
(1) TL STATUS SET (86H)
1st byte
BIT When the bit is "1"
0 Repeat recording function ON
1 Unused
2 Auto REC mode ON
3 Auto rewind ON
4 Unused
5 Series recording function ON
6 Tape end buzzer ON during recording
7 Alarm recording buzzer ON
3rd byte
BIT When the bit is "1"
0 Unused
1 Summer time ON
2 Unused
3 Unused
4 Unused
5 Always 0.
6 Unused
7 Unused
: To search for a designated INDEX point on the tape.
: 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.
: 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.
30H 33H 40H
0AH 0AH
: 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
0AH
RXD
• The setting details for the first to the third bytes are shown below.
Time
0AH
1st byte 2nd byte
0AH 0AH
2nd byte
BIT When the bit is "1"
0 Unused
1 Alarm recording function ON
2 Unused
3 Sensor recording function ON
4 External recording function ON
5 Unused
6 Index search function ON
7 Warning buzzer ON
Modes in parentheses are
available only in the Play mode.
Mode 1st byte 2nd byte
SP 30H 30H
EP 30H 31H
L12H 30H 32H
L24H 30H 33H
3rd byte
Time
0AH
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