System Integration - Christie CineIPM-2K User Manual

GPIO
1 2 3 4 5
6 7 8 9
Configuring the GPIO
Cine-IPM 2K User's Manual
020-100164-01 Rev. 1 (01/08)

System Integration

The GPIO connector located on the Cine-IPM 2K front panel provides a flexible
method of interfacing a wide range of external I/O devices to the Cine-IPM 2K,
usually so that an event on one device automatically triggers an event on the other.
There are 7 GIO pins available on the 9pin D-Sub GPIO connector, all of which are
configurable via RS232 commands. The remaining two pins are reserved for ground
and power – see table below for pin identification.
1
2
3
4
5
6
7
8
9
The serial cable required for connecting the external device to the Cine-IPM 2K's
GPIO connector, whether it's a standard or custom cable, must be compatible with
the external device.
The GPIO connector can be configured to automate any number of events using the
serial command code GIO. Each pin is defined as either an input or output
depending on the desired outcome. In general, configure the pin as an input if you
want the projector to respond to something an external device does, and as an output
if you want the external device to respond to an action taken by the projector. For
example, configure the pin as an output if you want the lighting in a room to
automatically dim when the projector is turned on.
A GIO command can also set the state of each pin as high or low. By default, the
state of each pin is high. The voltage applied to pins in the high state is + 3.3V.
Example 1. Turn room lighting on when the projector is turned off. (Assumes a
control/automation unit is configured to turn the lights on when pin 2 of its input goes
high.)
(GIO C2 O)
(GIO 2 H)
GPIO Pins
Pin #
+ 12V (200mA)
GPIO 1
GPIO 2
GPIO 3
Ground
GPIO 4
GPIO 5
GPIO 6
GPIO 7
Set pin #2 configuration to output
Set pin #2 to high (state)
A p p e n d i x D
Signal
D-1