Avid Technology AirSpeed series, Installation And User Manual

Page: 68 / 282

2 Installing the Hardware and Setting Up Your System
68
Connecting Expansion Port Cables
The Expansion Port connections on the AirSpeed Multi Stream are for your GPIO devices.
Each Expansion port has 4 LTC out BNCs (1 per SDI channel, LTC 1-4), and a General
Purpose I/O Pins Connector (DB25), and other connections that are not enabled in the
current version.
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These ports are not to be used to connect VGA monitors.
If you have a GPIO device that you want to control, you must connect it to one of the GPIO
connectors labelled EXPANSION PORT 1 or EXPANSION PORT 2 as shown in the
example below:
The Avid supplied Expansion Port cable is shown below:
To connect the Expansion Port cable:
1. Connect the 29-pin connector to the port labelled EXPANSION PORT 1. The other end
of the cable depends on the GPIO interface on the device you are controlling.
For more information on GPIO connector specifications and DB25 pin assignments, see
“Expansion Port Connector Specifications” on page 128
2. Connect the other end of the Expansion Port cable to your timecode recording devices.
The BNC connectors labelled A, B, C, and D are for your LTC Out connections 1, 2, 3,
and 4, respectively.
The BNC connector labelled E is for future expansion.
3. Repeat steps 1-2 using EXPANSION PORT 2 if connecting LTC to another GPIO
device.