LightSpeed Technologies CAT 860 - Manual (Page 24)

46 47
1. Overview
2. Setup & Use
3. Optional Accessories
4. T
roubleshooting
5. W
arranty
, Safety
& Specifications
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
QVMI? 0xED 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 <Param> character
contains the absolute
volume-level for the
microphone audio inputs.
Response Packet:
If the command is properly
received, the CAT 860
responds by repeating back
the command packet to the
serial controller with the
added <Param> character
containing the absolute
volume level for the audio/
video sources.
The possible values are
shown below:
0xCF = 0 dB
0xCE = -1dB
0xCD = -2dB
0xCC = -3dB
0xA7 = -40dB
0x83 = -76dB
0x82 = -77dB
0x81 = -78B
0x80 = -79dB
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
13. QUERY ABSOLUTE VOLUME MICROPHONE AUDIO INPUT COMMAND
13. RS-232 SERIAL INTERFACE
PROGRAMMING
CONT’D
<CMD>
Symbol
Hex
Value
<Param> Value Definition
QVAV? 0xEC 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
absolute volume-level for
the audio/video sources
inputs.
Response Packet:
If the command is properly
received, the CAT 860
responds by repeating back
the command packet to the
serial controller with the
added <Param> character
containing the absolute
volume level for the audio/
video sources.
The possible values are
shown below:
0xCF = 0 dB
0xCE = -1dB
0xCD = -2dB
0xCC = -3dB
0xA7 = -40dB
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
12. QUERY ABSOLUTE VOLUME AUDIO/VIDEO SOURCE COMMAND