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KRAMER: SIMPLE CREATIVE TECHNOLOGY
Communication Protocol
10
7 Communication Protocol
1. RS-232 using NULL MODEM at 9600 baud.
2. Command structure is 4 bytes.
First byte options:
DEC
HEX
1 128
80
RESET VIDEO
2 160
A0
READ PARAMETER
3 161
A1
WRITE PARAMETER
4 189
BD
IDENTIFY MACHINE
5 33
21
Set (for the rest of commands)
Second byte is the command type (7 bits + 80 HEX).
Third byte is the parameter value (7 bits + 80 HEX).
Byte 4 is the machine address: can be 98 or 99 (in HEX).
Note:
1. When working in HEX, add 80 to the values in the table.
2. When working in DEC, add 128 to the values in the table.
3. All values in the table are in DEC.
Byte 2
Command Description
Byte 3 (parameter value)
0
INPUT FORMAT
0 - CV
1 - YC
2 - YUV
1
INPUT_STANDARD
0 - PAL B
1 - PAL N
2 - PAL M
3 - NT 3
4 - NT 4
5 - SEC
21
OUTPUT_STANDARD
0 - PAL B
(Read only)
3 - NT 3
22
GENLOCK
0 - OFF
1 - ON
23
PANEL_LOCK
0 - OFF
1 – ON
28
GENLOCK_STAT
0 – No genlock
(Read only)
1 – Genlock
32
NO_INPUT_DETECT
0 – Input detected
(Read only)
1 – No input signal