BenQ SX930, Service Manual

Page: 77 / 175

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Interface Settings
RS-232 protocol
Baud Rate 115200 bps (default)
Changeable settings in User OSD
(2400/4800/9600/14400/19200/38400/57600/115200)
Data Length 8 bit
Parity Check None
Stop Bit 1 bit
Flow Control None
Software specification
1.
When input cmd fail, e.g. correct input is “*pow=?#” but input “*po=?#”, or input “*mute=on#”
while projector is already mute, it will show “*Illegal format#”.
2. When input cmd but projector has no such function item, e.g. input “*sour=RGB2#” but
projector has no RGB2 connector, it will show “*Unsupported item#”.
3. When cmd and function are both workable, but it’s not under the status which cmd can be
executed, e.g. input “*asp=4:3#” while not connecting source, it will show “*Block item#”.
4. When input “query” cmd (with “?”), e.g. input “*sour=?#”, it will echo the same input strings
with some value.
5. Press “Enter” key after”
＞
”, it should be no echo and skip to the next row.
6. Press “Space” and “Enter” key after”
＞
”, it will echo”*Illegal format#”
3. Procedure of operation by HyperTerminal
Hardware requirement
–
RS232 cable
–
Desktop or laptop with DB-9 connector
Software requirement
HyperTerminal – included in Microsoft Windows operating system
Procedure
Step1. Connect projector and computer via a RS232 cable
Step2. Turn on projector
Step3. Create a connection between computer and projector by HyperTerminal
a. Open “HyperTerminal”
b. Enter a name for this connection