User guide

HDMI 4x1 Selection Switcher User Guide 9

Figure 6: Rear view

Communication protocol and command

codes

Communication protocol: RS232 communication protocol

Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity bit: none

Table 2: RS232 command types and codes

Command

Function Description

Feedback Code

1B1.

Switches HDMI from input 1 to the output

AV: 1 -> 1

2B1.

Switching HDMI from input 2 to the output

AV: 2 -> 1

3B1.

Switching HDMI from input 3 to the output

AV: 3 -> 1

4B1.

Switching HDMI from input 4 to the output

AV: 4 -> 1

0B0.

Turns off the output

MUTE

0B1.

Turns on the output

UNMUTE

600%

Returns the current state of the switch

AV:1 -> 1

601%

Puts the switch into Auto Switching mode

Auto Switch

602%

Puts the switch into Manual Switching mode

Manual Switch