Barco RS232 - Manual (Page 59)

2. Basic Commands
Transmit
Start \xfe
Projector address \x01
Command[0] \x21
Command[1] \x7b
Checksum \x9d
Stop \xff
Receive (acknowledge)
Start \xfe
Projector address \x01
Command[0] \x00
Command[1] \x06
Checksum \x07
Stop \xff
Receive (awnser)
Start \xfe
Projector address \x01
Command[0] \x21
Command[1] \x7b
Data[0] \x00
Checksum \x9d
Stop \xff
2.22 Aspect ratio, Write
Description
Sets the Aspect ratio
Command
Command [0] \x20
Command [1] \x0b
Data
Data [0] = unsigned byte
byte value:
\x00 = Auto ; \x01 = 4:3 ; \x02 = 5:4 ; \x03 = 16:9
Example
Sets the aspect ratio to “4x3”
R5976884 RLM SERIES 04/04/2006 57