47
2-2 VCR setting commandsCommands 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”.
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.
10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD
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 ON
2 Unused
3 Unused
4 Unused
5 Always 0.
6 Unused
7 Unused
TXD 86H 1st byte
0AH 0AH Time
2nd byte 0AH 3rd byte 0AH
RXD
(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.
• The setting details for the first to the third bytes are shown below.
5Timelapse VCR operation mode setting commands
Mode 1st byte 2nd byte
(SP 30H 30H)
8H 30H 31H
L24H 30H 33H
L40H 31H 37H
Modes in parentheses are
available only in the Play mode.