Crestron electronic Marine Sanitation System QUICK MEDIA DISTRIBUTION CENTER User Manual

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QuickMedia Distribution System Crestron QM-MD4x2
When the verbose mode is on and the routing status changes while the MD4x2 is in
the system mode, or if the MD4x2 is polled for the status of an output, the MD4x2
replies with one of the responses listed in the following table.
Switching/Routing Status Replies
MESSAGE DEFINITION
IxOyA\r
New audio route if audio route has changed
where x will be a two-digit number from 00 to
04 and y will be a two-digit number from 01 to
02.
IxOyV\r
New video route if video route has changed
where x will be a two-digit number from 00 to
04 and y will be a two-digit number from 01 to
02.
SA1V1A2V2\r Current switching schema of all of the outputs
where a1 is the input routed to output 1 audio,
v1 is the input routed to output 1 video, a2 is
the input routed to output 2 audio, and v2 is
the input routed to output 2 video. Each
number will be two digits.
If a switch command is sent and an output is already at the new setting, serial
feedback will not be provided for that output.
NOTE: There is no serial feedback for any switches made while the MD4x2 is in
the local mode, even if the verbose mode is on. Use the LocalMode-FB digital
signal to signal when the device leaves local mode in order to trigger the “S?\r”
command to query the MD4x2 for the current status of all outputs.
“Switch All” Example
The string “C0204xx01\r” sends the following command:
• Switch Audio Input 2 and Video Input 4 to QM Out 1.
• Retain the current Audio Input on QM Out 2 and switch Video Input 1 to
QM Out 2 (current Audio Input is 2).
If polled for the status of all outputs (S?\r), the device response on Control-FB$ will
be: “S02040201\r”.
34 • QuickMedia Distribution System: QM-MD4x2 Operations Guide - DOC. 6278

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