SY-UHD-S41A
5
www.sy.co.uk
RS232 Control Commands
The following RS232 commands provide control of the SY-UHD-S41A from a PC, laptop or programmable
control panel. The RS232 settings are: 9600 baud, 8 bits, no parity, and 1 stop bit.
Action
Command
Response
Select input 1
1B1.
AV:[spc]1[spc]-
>[spc]1[spc][cr][lf]
Select input 2
2B1.
AV:[spc]2[spc]-
>[spc]1[spc][cr][lf]
Select input 3
3B1.
AV:[spc]3[spc]-
>[spc]1[spc][cr][lf]
Select input 4
4B1.
AV:[spc]4[spc]-
>[spc]1[spc][cr][lf]
Turn off the HDMI output
0B0.
Mute[spc]On[spc][cr][lf]
Turn on the HDMI output
0B2.
Mute[spc]Off[spc][cr][lf]
Get the current status info
600%
See note 1
Enable Auto Mode
601%
Auto[spc]Switch[spc][cr][lf]
Disable Auto Mode
(note 2)
602%
Manual[spc]Switch[spc][cr][lf]
Upgrade internal EDID data
EDIDUpgrade[x]. EDID Upgrade OK!
Set the ARC mode on
ARC1&
Audio Return System
Set the ARC mode off
ARC0&
Switch Device System
Notes:
1.
The actual response provides the current operating status of the unit giving the switching
status, switching mode and the ARC status, for example:
AV:[spc]4[spc]->[spc]1[cr][lf]
AV:[spc]2[spc]->[spc]2[cr][lf]
AV:[spc]1[spc]->[spc]3[cr][lf]
AV:[spc]3[spc]->[spc]4[cr][lf]
Manual[spc]Switch[cr][lf]
Switch[spc]Device[spc]System[cr][lf]
2.
Auto mode is also disabled when a manual selection command is transmitted.
3.
The
[spc]
,
[cr]
and
[lf]
represent the single ASCII character value for the space, carriage
return and line feed respectively.
4.
The
EDIDUpgrade[x].
command uses values 1 to 5 for the five Embedded EDID data sets
and 6-15 for the ten Custom EDID data sets.
The
EDIDUpgrade[x].
command should only be used from a serial emulation program
that can send the binary EDID image after sending the appropriate
EDIDUpgrade[x].
command. Be sure that the binary image only contains valid EDID data block(s) to ensure
correct interpretation of the EDID data by the HDMI source equipment.
