17. Pin configurations
17. PIN CONFIGURATIONS
Overview
• About General Purpose Inputs & Outputs (GP IO)
•Pinconfigurations of the communication ports
•Pinconfigurations of the ICM P c omm unication ports
•Pinconfigurations of the inputs
17.1 About General Purpose Inputs & Outputs (GPIO)
The Barco Cinema Controller and the Barco ICMP are equipped with GPIO ports. The electrical specifications
described in this ch apter are the same for both GPIO ports.
General Purpose inputs
The B arco Cinema Controller and the Barco ICMP have each eight (8) opto-isolated general p urpose inputs available. These inputs
are us ed to trigger the execution of mac ro files. For more explanation about the association of a m acro to a GPI, consult the user
guide of the Communicator.
Input v oltage
The inputs can be directly driven from a TTL or CM O S output.
• The shape of the pulse must be rectangu lar.
• The duration of the pulse must be at least 5 0 milliseconds (shorter pu lses are considered as a switch bounce)
• Minimum voltage : V
min
=+5V
• Maximum voltage : V
max
= +18V
External power supply
When interfacing with contact closure outputs, an external power supply needs to be provided. Depending upon the configuration a
suitable pull-up resistor needs to be add ed as well.
10k
820R
GPIn P
GPIn N
4.7V
Input to projector Internal projector
1k1
+5V
to
+18V
10k
820R
GPIn P
GPIn N
4.7V
Input to projector Internal projector
1k1
+5V
to
+18V
Image 17-1
Cables
When long cable connections are r equired the use of shielded cables with twisted pairs is recomm ended. One twisted pair is to be
assigned to eac h GP Input pair.
How to make the connection
When the power supply used to provide the DC voltage is isolated from ground (for exam ple in the case of a n AC adapter) it is
recommended that the minus pole of that power supply is connected t o ground (or to the projector chassis). This will avoid high
common mode voltages at the projector GP Inputs. If that same power supply is used for other parts of the system, take care not to
create ground loops. In any case when shielded cables are used that shield s hould be connected to the projector chassis.
General Purpose outputs
The Barco Cinema C ontroller and the Barco ICMP hav e each eight (8) opto-isolated outputs ava ilable. Four (4) of the outputs on
the Cinema Controller are ded icated for TI. The other general purpose outputs can be controlled via software.
About an output
The output can generate a falling ed ge, rising edge, toggle or continuous toggle.
R5906753 DPXK BLP SERIES 20/11/2017
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