Ross AFR-7812C, Руководство пользователя, Страница: 10 / 16

1–4 • Installation AFR-7812C User Manual (Iss. 02)
Ventilation
To minimize heat buildup and improve module reliability, maintain a blank rack space both above
and below each installed chassis.
Figure 1.2 Frame Stacking
Power Supply PS-7813
The AFR-7812C frames support two independent 20 volt PS-7813 power supplies for
redundancy. Turning the power supply off before inserting or removing it from the frame will
ensure longer connector life.
Audio Input and Output Cables
The frame uses a three-pin, pluggable audio connector. This connector allows each individual
audio input and output connection to be wired prior to connection to the frame.
Use the following procedure to wire your audio input and output cables:
1.
Wire the external cables to the pluggable terminal block connectors as outlined in
Figure 1.3 . Note that standard practice dictates that to avoid ground loop problems,
cable grounds should be connected to output plugs only.
2. Once the cables are wired, install the connectors according to Figure 1.4 . The frame’s
mating terminals are marked for both the 8-output mono and the 4-output stereo
amplifiers.
Figure 1.3 Audio Terminal Block Connectors
Ross Gear
Cable
Tie Wrap
Connector
Polarity Indications