JVC GD-42X1U - Wide Gamut Hd Monitor Instructions Manual page 58

Command outline
To control the monitor from external control equipment, send operation
commands to the monitor.
Example of communication procedures
External control
equipment
1 Operation command to select "Input-3".
2 Acknowledgment from the monitor.
3 The input is changed to "Input-3".
Command structure
! 0x82 0x80 IP 3 Lf
a
a: Header
b: Device ID
c: Monitor ID
d: Command
e: Data
f: Termination
1
! 0x82 0x80 IP 3 Lf
2
Ack 0x82 0x80 IP 3 Lf
b c
! : Operation command from the external control
device.
? : Enquiry command from the external control
device.
@ : Response from the monitor to an enquiry
command.
Ack (0x06): Positive acknowledge from the monitor.
Nak (0x15): Negative acknowledge from the
monitor.
0x82 (fixed)
0x80 – 0xFF (Default setting is 0x80.)
See "Command list" on the next page.
Lf (0x0A)
GD-42X1
d e f
3
39