8-in 1-out
HDMI Switcher
Operation Manual
CHDMI-81
1. HDMI output: Connect the HDMI output to the HDMI input of
your display using HDMI cable.
2. HDMI inputs: Connect your various HDMI sources to each of the
HDMI input of the unit using HDMI cables.
3. Power: Plug the supplied 5VDC power supply into the unit.
4. RS232: 9-pin D-sub female connector for connecting to your other control
console for remote control.
Remote Control
1. Power:
Press the button to turn on/off the unit.
2. Direct input selector:
1
2
Press numerical number button to select your desired
input source.
3
3. Void buttons (No function). If the button number is
greater than the total input number of the unit then
the button is of no function.
CR-22
Specifications
* Frequency bandwidth: 1.65Gbps(single link)
* Inputs: 8 x HDMI female ports (Type A connector)
* Output: 1 x HDMI female port (single link)
* 5VDC universal power supply
* Weight: 0.85kgs
* Dimension: 280(W) x104(L) x 44(H)mm
CHDMI-81 RS-232 Remote Control Protocol
* The connection between CHDMI-81 and remote controller with RS-232 modem cable.
Pins definition of modem cable
CHDMI-81
Definition
Remote Controller
PIN Definition
PIN
1
2
3
4
5
6
7
8
NC
T xD
R x D
NC
GND
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
NC
R xD
T x D
NC
GND
NC
NC
NC
NC
9
* RS-232 transmission format:
Baud Rate : 9600 bps
Data Bit : 8 Bits
Parity: None
Stop Bit: 1 bi
* Command :
* A command is combined with a word plus a digit
* This combination commnad code has to be separated by ASCII character SPACE
* The command will be executed after ASCII character "CR" input
* After ASCII character "CR" is entered, The unit will reply "OK" if the command is legal
* If the command is illegal, The unit will reply "NG"
Command Code
Comment
PORT 1 ON
"PORT"+ SPACE+"1"+CR
"PORT"+ SPACE+"2"+CR
"PORT"+ SPACE+"3"+CR
"PORT"+ SPACE+"4"+CR
"PORT"+ SPACE+"5"+CR
"PORT"+ SPACE+"6"+CR
"PORT"+ SPACE+"7"+CR
"PORT"+ SPACE+"8"+CR
"PORT"+ SPACE+"?"+CR
"SIGNAL"+SPACE+"1"+CR
"SIGNAL"+SPACE+"0"+CR
"SIGNAL"+SPACE+"?"+CR
"POWER"+ SPACE+"1"+CR
"POWER"+ SPACE+"0"+CR
"POWER"+ SPACE+"?"+CR
PORT 2 ON
PORT 3 ON
PORT 4 ON
PORT 5 ON
PORT 6 ON
PORT 7 ON
PORT 8 ON
QUERY PORT STATUS
ENABLE SIGNAL ENHANCE
DISABLE SIGNAL ENHANCE
QUERY SIGNAL STATUS
POWER ON
POWER OFF
QUERY POWER STATUS
Connection and Installation
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DVD 2
STB
DVD 1
DVD 3
LCD TV
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