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Appendix II
– RS-232 control protocols
RS-232 Serial control (Baud rate 2400,
8 bits, 1 stop bit and no parity)
Physical connection :
Controller side
Computer side
Connector interface : CN8
Connector interface : Serial port
Mating connector : Molex 51021-0600
Mating connector : DB9 Female
PIN#
Description
PIN#
Description
4
RS-232 Tx Data
2
RS-232 Rx Data
5
Ground
3
RS-232 Tx Data
6
RS-232 Rx Data
5
Ground
Software connection :
The OSD function can be controlled through sending the RS-232 protocol.
The RS-232 program can be custom-made to fit for application or it can be used the program provided by Digitalview on request. Please contact
your local sales for informations.
1.
Commands to implement switch mount control buttons
Function
Command
Description
Acknowledge (if enabled)
Menu
0xf7
Menu button pressed
Button equivalent
Select-down
button
0xfa
Select down button
pressed
Button equivalent
Select-up
button
0xfb
Select up button pressed
Button equivalent
Right/+ button
0xfc
Right/+button pressed
Button equivalent
Left/- button
0xfd
Left/- button pressed
Button equivalent
2.
Parameter setting - immediate, relative, reset and query
Function
Command
Description
Acknowledge (if enabled)
Brightness
control
0x81,
nn | “+” | “-” |
“r” | “R” |
“?”
Set brightness =
value/increment/decrement
Reset
Query
Brightness.
Range: “0””0”-“6””4”
Default: “3””2”
Contrast
control
0x82, “a” | “A”,
nn | “+” | “-” |
“r” | “R” |
“?”
Set all contrast =
value/increment/decrement
Reset
Query
Contrast.
Range: “4””0”-“6””4”
Default: “3””2”
Sharpness
0x8a,
nn | “+” | “-” |”r” |
”R” |
“?”
Set sharpness=
value/increment/decrement
Reset
Query
Sharpness
Range: “F””C”-“0””4”
Default: “0””0”
OSD H position 0x90,
nnn | “+” | “-“ |
“r” | “R” | “?”
Set osd_hpos =
value/increment/decrement
Reset
Query
OSD horizontal position
Range: “0””0””0”-“3””E””8”
Default: “1””F””4”
OSD V position 0x91,
nnn | “+” | “-“ |
“r” | “R” | “?”
Set osd_vpos =
value/increment/decrement
Reset
Query
OSD vertical position
Range: “0””0””0”-“3””E””8”
Default: “1””F””4”
Select menu
0x93,
Select menu timeout =
OSD menu timeout value.
5
4
6
3
1
5
4
6
3
1
7
8
9
Mating face of RS-232 DB9 Male
Mating face of CN8