Vs-202yc communication protocol – Kramer Electronics VS-202YC User Manual

Page 21

VS-202YC Communication Protocol

code is sent again. (The mode is automatically cancelled after implementation of the switch if the “execute” command is

used).

For example, to connect input 4 to output 3 after a delay, send HEX codes

(set for delayed switch)

(switch code)

then, after the required delay, send HEX codes

(execute delayed switch)

to implement the switch.

NOTE 19 – After this instruction is sent, the unit will respond to the ASCII command set defined by the OUTPUT byte. The

ASCII command to operate with the HEX command set must be sent in order to return to working with HEX codes.

NOTE 20 – When data (ie. the INPUT and/or OUTPUT bytes) of more than 7 bits is required, this instruction is sent before

sending the instruction needing the additional bits. The data in this intruction then becomes the Most Significant Bits of that

next instruction. For example, to set the audio gain (instruction 22) of output 3 to 681

dec

(2A9

hex

), you would first send HEX

codes

and then send HEX codes

81.

To set the audio gain of output 6 to 10013

dec

(271D

hex

), first send HEX codes

followed by HEX codes

81.

NOTE 21 – To store data in the non-volatile memory of the unit, eg. the EEPROM for saving SETUPS. The EEPROM

address is sent using the INPUT byte, and the data to be stored is sent using the OUTPUT byte. To use this instruction, it is

necessary to understand the memory map, and memory structure of the particular machine.

NOTE 22 – Instruction 59 and instruction 60 load data for sending to the crosspoint switcher (or for storing in a SETUP), ie.

the data is “lined-up” to be executed later. Instruction 58 executes the loaded data.

NOTE 23 – If the INPUT byte is set as 127

dec

, then the data stored in a SETUP is loaded. The SETUP # is in the OUTPUT

byte.

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

and then send HEX codes

81.

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

If input 7 is detected as valid, then the unit will send HEX codes

81.