Avid Technology AirSpeed Multi Stream, Installation And User Manual

Page: 71 / 398

Cabling Up the AirSpeed Multi Stream
71
Connecting Video Reference Cables
This topic contains information on how to connect video reference cables to the rear of the
AirSpeed Multi Stream chassis.
The following illustration shows the location of the video reference connectors on the rear of
the AirSpeed Multi Stream MPEG-2 HD chassis. The location of the REF IN/THRU
connectors are the same for all AirSpeed Multi Stream models.
To connect video reference cables:
1. Ensure that you have the proper SDI video (75 ohm-rated) interface coaxial cables
available.
2. Connect a composite video reference source (house reference, blackburst, or tri-level) to
one of the reference input connectors (labelled REF IN/THRU).
If the AirSpeed Multi Stream is the last device in your reference loop, terminate the
remaining Ref Loopthrough connector with a 75 ohm-rated terminator. If the AirSpeed
Multi Stream is in the middle of your reference loop, connect the remaining REF
IN/THRU connector to the next device’s reference input.
3. Connect the other end of the video reference cable to your devices that are sending the
input signal to the AirSpeed Multi Stream.
House Reference
(Analog or Tri-level)
OUT
1 4 2 3 5 6 7 8
IN
1 2
IN
3
4
EXPANSION
PORT 1
EXPANSION
PORT 2
USB
CONSOLE
VGA
SERIAL
ETHERNET 1 2 3 4
1 2 3 4
5 6 7 8
OUT
REF
IN/THRU
LTC
IN/THRU