Kramer Electronics VS-21HDCP-IR - Manual (Page 15)

12 VS-21HDCP-IR - Protocol 2000
7.2 Instruction Codes
All the values in the table are decimal, unless otherwise stated
Instruction Codes for Protocol 2000
Instruction Definition for Specific Instruction Notes
# Description Input Output
1 SWITCH VIDEO Set equal to video input that is
switched
(0 = disconnect)
Set equal to video output that is
switched
(0 = to all the outputs)
2, 15
NOTES on the above table:
NOTE 2
– These are bi-directional definitions. If the switcher receives the code, it performs the instruction. If
the instruction is performed (due to a keystroke operation on the front panel), then these codes are sent.
For example, if the PC sends HEX code:
01
85 88 83
then the switcher (machine 3) switches input 5 to output 8.
If the user switches input 1 to output 7 using the front panel buttons, the switcher sends HEX code:
41
81 87 83
to the PC.
When the PC sends one of the commands in this group to the switcher, if the instruction is valid, the switcher
replies by sending the same four bytes to the PC that it received (except for the first byte, where the
DESTINATION bit is set high).
NOTE 15 – When the OVR bit (4 th byte) is set, then the video commands have universal meaning.
For example, instruction 1 (SWITCH VIDEO) causes all units (including audio, data, etc.) to switch. Similarly, if
a machine is in FOLLOW mode, it performs any video instruction.