Lightspeed CAT 860, User Manual

Page: 48 / 88

48
1. Overview
2. Setup & Use
3. Optional
Accessories
4. T
roubleshooting
5. W
arranty
, Safety
& Specifications
14. RS-232 SERIAL INTERFACE
COMMAND DEFINITION
CONT’D
<CMD>
Symbol
Hex
Value
<Param> Value Definition
QMAV? 0xEE Command Packet:
The controller sends no
<Param> character in the
command packet.
This command causes the
CAT 860 to return a query
response packet where the
added imbedded <Param>
character contains the mute
state for the audio/video
sources.
Response Packet:
If the command is properly
received, the CAT 860
responds by repeating
back the command packet
with an added imbedded
<Param> character
containing the value 0x80 if
the state is “un-muted” and
0x81 if the state is “muted”.
The possible values are
shown below:
0x80 = Un-muted
0x81 = Muted
If the command is not
received properly, the CAT
860 responds by sending a
<NACK> character.
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D
Audio Input Functions for the A/V Source Group Cont’d
14. QUERY MUTE FOR AUDIO/VIDEO SOURCE COMMAND