InFocus IN74 Specifications

RS-232 terminal specifications for IN74 and IN76
Communication configuration
To control the projector from an LCD control panel, connect an RS-232 cable
to the serial control connector on the projector and set your computer's
serial port settings to match this communication configuration:
Setting
Bits per second
Data bits
Parity
Stop bits
Flow control
Emulation
Command format
All commands consist of 3 alpha characters followed by a request, all
enclosed in parentheses. The request can be a read request (indicated by a
"?") or a write request (indicated by 1 to 4 ASCII digits).
A read request format: (AAA?) where
(
AAA
?
)
Value
19,200
8
None
1
None
VT100
starts the command
denotes the command
denotes the read request
ends the command
A read command returns the range and the current setting, for example
Function
Brightness
Lamp hours
A write request example: (AAA####) where
Some commands have ranges, while others are absolute. If a number
greater than the maximum range is received, it is automatically set to the
maximum number for that function. If a command is received that is not
understood, a "?" is returned. With absolute settings, "0" is off, 1-9999 is on.
The one exception is the Power command, where 0 is off and 1 is on
Function
Brightness
Power
Power
Power
36
Command Response
(BRT?) (0-22, 10)
(LMP?) (0-9999, 421)
( starts the command
AAA denotes the command
#### denotes the value to be written
(leading zeros not necessary)
) ends the command
Command Response
(BRT10) Sets the brightness to 10
(PWR0) Turns power off
(PWR1) Turns power on
(PWR9999) ?
:
.