Kramer Electronics VS-161H - Manual (Page 23)

20 VS-161H - Kramer Protocol 2000
Instruction Codes for Protocol 2000
Instruction Definition for Specific Instruction Notes
# Description Input Output
1 SWITCH VIDEO Set equal to video input which is to
be switched
(0 = disconnect)
Set equal to video output which is to
be switched
(0 = to all the outputs)
2, 15
30 LOCK FRONT PANEL 0 - Panel unlocked
1 - Panel locked 0 2
NOTES on the above table:
NOTE 2 - These are bi-directional definitions. That is, if the switcher receives the code, it performs the instruction; and if
the instruction is performed (due to a keystroke operation on the front panel), then these codes are sent. For example, if
the HEX code
01
85 88 83
was sent from the PC, then the switcher (machine 3) switches input 5 to output 8. If the user switched input 1 to output 7
via the front panel keypad, then the switcher sends HEX codes:
41
81 87 83
to the PC.
When the PC sends one of the commands in this group to the switcher, then, if the instruction is valid, the switcher
replies by sending to the PC the same four bytes that it was sent (except for the first byte, where the DESTINATION bit
is set high).
NOTE 15 – When the OVR bit (4th 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.