RS-232 PROTOCOL
9600 Baud
8 bits
No parity
1 Stop bit
ASCII
RxD of the PC or TxD of the VHD is on pin2
TxD of the PC or RxD of the VHD is on pin3
Gnd is pin 5
RTS of the PC or CTS of the VHD is on pin7 (not used)
CTS of the PC or RTS of the VHD in on pin8 (not used)
Command format <input><aspect ratio>
Inputs:
Aspect Ratios:
Power:
0 = Composite
A = Anamorphic
ON = Power on
1 = S-Video
L = LetterBox
OF = Power off
2 = Component
S = Standard (4:3)
3 = Pass Through
H = HDTV (for pass through)
C = Computer (for pass through)
To keep the currently selected aspect ratio or input, replace the letter/number with a dash "-"
Each command must be followed by a carriage return <CR>.
Examples:
2L will select the component input and change the aspect ratio to letterbox
-A will change the aspect ratio to anamorphic, but leave the input selection alone
1- will change the input to S-Video, but leave the aspect ratio alone
RS-232 Projector Control requires a cable terminated with male RJ-11 jacks at both ends.
Wiring is the same as for a phone (ie. in a cross configuration).
11-21
Projector
Controller
N.C.
1
6
GND
2
5
GND
RxD/TxD
3
4
RxD/TxD
RxD/TxD
4
3
RxD/TxD
GND
5
2
GND
N.C.
6
1
