ClearVIEW HD-20
ClearVIEW HD-20 Manual 342-0169 Rev. B Page 12 of 16
Appendix 3: Communication Specification
Communication Speed: 9600 bps (default)
Start bit: 1
Stop bit: 1
Data bits: 8
Parity: None
No Flow control
NOTE: The Vaddio ClearVIEW HD-20 Control Protocol is similar, but not identical to the Sony® VISCA™
command set in order to be compatible with several popular control devices. Not all VISCA commands are
supported and there are many HD-20 specific commands in the following Command and Inquiry Lists.
HD-20 Command List (1/2)
Command Set V Command Command Packet Comments
AddressSet Y Broadcast 88 30 01 FF Address Set
IF_Clear Y Broadcast 88 01 00 01 FF I/F Clear
CommandCancel Y 81 2p FF p: Socket No(=1 to2)
CAM_Power Y
Y
On
Off
81 01 04 00 02 FF
81 01 04 00 03 FF
Power On/Off
CAM_Zoom Y
Y
Y
Y
Y
Y
Y
Stop
Tele(Standard)
Wide(Standard)
Tele(Variable)
Wide(Variable)
Direct
Direct(Variable)
81 01 04 07 00 FF
81 01 04 07 02 FF
81 01 04 07 03 FF
81 01 04 07 2p FF
81 01 04 07 3p FF
81 01 04 47 0p 0q 0r 0s FF
81 01 7E 01 4A 0V 0p 0q 0r 0s FF
p:0(Slow) to 7(Fast)
p:0(Slow) to 7(Fast)
pqrs:Zoom Pos 0x000-0x6400*
V:(Speed) 0-7
CAM_Focus Y
Y
Y
Y
Y
Y
Y
Y
Y
Stop
Far(Standard)
Near(Standard)
Far(Variable)
Near(Variable)
AutoFocus
ManualFocus
Auto/Manual
Direct
81 01 04 08 00 FF
81 01 04 08 02 FF
81 01 04 08 03 FF
81 01 04 08 2p FF
81 01 04 08 3p FF
81 01 04 38 02 FF
81 01 04 38 03 FF
81 01 04 38 10 FF
81 01 04 48 0p 0q 0r 0sFF
Supported as ‘Standard
Supported as ‘Standard
pqrs:0x000-0xC00*
CAM_WB Y
Y
Auto
Manual
81 01 04 35 00 FF
81 01 04 35 05 FF
CAM_RGain Y
Y
Y
Y
Reset
Up
Down
Direct
81 01 04 03 00 FF
81 01 04 03 02 FF
81 01 04 03 03 FF
81 01 04 43 00 0p 0q 0rFF
prq:000-0x27f
CAM_BGain Y
Y
Y
Y
Reset
Up
Down
Direct
8x 01 04 04 00 FF
8x 01 04 04 02 FF
81 01 04 04 03 FF
81 01 04 44 00 0p 0q 0rFF
prq:000-0x27f
CAM_AE Y
Y
Y
Y
Full Auto
Manual
Shutter Priority
Iris Priority
81 01 04 39 00 FF
81 01 04 39 03 FF
81 01 04 39 0A FF
81 01 04 39 0B FF
Auto Exposure Mode
Manual Control Mode
Shutter Priority Mode
Exposure Priority Mode (default)
CAM_Iris Y
Y
Y
Y
Reset
Up
Down
Direct
81 01 04 0B 00 FF
81 01 04 0B 02 FF
81 01 04 0B 03 FF
81 01 04 4B 00 00 0p 0q FF
pq:0x0-0x0B
CAM_Gain Y
Y
Y
Y
Reset
Up
Down
Direct
81 01 04 0C 00 FF
81 01 04 0C 02 FF
81 01 04 0C 03 FF
81 01 04 4C 00 00 0p 0q FF
pq:0x0-0x24
*Zoom and Focus Data:
CAM_Zoom: Range(0x000–0x6400)
CAM_Focus: Range (0x000-0xC000) dependent on Zoom Position
Pin # RJ-45 RS-232 and IR Out Pins
1) Unused
2) Unused
3) Unused
4) IR Output (Diff Signal to Quick-Connect SR)
5) IR Ground (Diff Signal to Quick-Connect SR)
6) GND (GND of IR Short Range - Pin 3)
7) RXD (from TXD of control source)
8) TXD (to RXD of control source)
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