Kramer Electronics VS-41H User Manual

Page 23

VS-41H - Protocol 2000

NOTE 9 – An error code is returned to the PC if an invalid instruction code was sent to the switcher, or if a parameter
associated with the instruction is out of range (e.g. trying to save to a setup greater than the highest one, or trying to
switch an input or output greater than the highest one defined). This code is also returned to the PC if an RS-232
instruction is sent while the machine is being programmed via the front panel. Reception of this code by the switcher is
not valid.

NOTE 13 – This is a request to identify the switcher/s in the system. If the OUTPUT is set as 0, and the INPUT is set as
1, 2, 5 or 7, the machine will send its name. The reply is the decimal value of the INPUT and OUTPUT. For example, for
a 2216, the reply to the request to send the audio machine name would be (HEX codes):
7D

81 (i.e. 128dec+ 22dec for 2nd byte, and 128dec+ 16dec for 3rd byte).

If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software
version number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the
number in front of the decimal point, and the OUTPUT representing the number after it. For example, for version 3.5, the
reply to the request to send the version number would be (HEX codes):
7D

81 (i.e. 128dec+ 3dec for 2nd byte, 128dec+ 5dec for 3rd byte).

If the OUTPUT is set as 1, then the ASCII coding of the lettering following the machine’s name is sent. For example, for
the VS-7588YC, the reply to the request to send the first suffix would be (HEX codes):
7D

81 (i.e. 128dec+ ASCII for “Y”; 128dec+ ASCII for “C”).

NOTE 14 – The number of inputs and outputs refers to the specific machine which is being addressed, not to the
system. For example, if six 16X16 matrices are configured to make a 48X32 system (48 inputs, 32 outputs), the reply to
the HEX code
3E

82 (i.e. request the number of outputs)

would be HEX codes
7E 82 90 82
i.e. 16 outputs

NOTE 15 – When the OVR bit (4th byte) is set, then the “video” commands have universal meaning. For example,
instruction 1 (SWITCH VIDEO) will cause all units (including audio, data, etc.) to switch. Similarly, if a machine is in
“FOLLOW” mode, it will perform any “video” instruction.

NOTE 24 – Further information needed in instructions 21, 22, 25 and 26, is sent using instruction 42 – which is sent
prior to the instruction. For example, to request the audio gain value of right input # 9, send hex codes
2A 84 80 81
and then send HEX codes
19 89 81 81.
To set MIX mode, send hex codes
2A 81 84 81
and then send HEX codes
16

NOTE 25 – For units which detect the validity of the video inputs, Instruction 16 will be sent whenever the unit detects a
change in the state of an input (in real-time).
For example, if input 3 is detected as invalid, the unit will send the HEX codes
10 83 84 81
If input 7 is detected as valid, then the unit will send HEX codes
10 87 85 81.