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Typical Application of the 9973-C
This application drawing shows a pair of 9973-Cs used in a system with the high-speed ports on a pair of
9252DT and DR cards. The combination provides eight simplex video, three built-in data ports on the 9252D
pair, and the duplex high-speed port that is used by the 9973-Cs. The 9973-Cs each support four 10/100
Base T Ethernet ports and the 10 Mbps Ethernet connection between the 9973-C on each end.
Troubleshooting 9973-C Links
Normally the first step in troubleshooting is to insure that the optical link on the host cards is operational. The
9973-C depends on a correctly operating duplex high-speed port link for proper operation. If the fiber and link
status indicators on the video/data host cards are normal, follow the procedures below.
Check the high-speed port status indicator on both ends. These should both be
green
. If either end is
red
or
yellow
, there is a problem with the high-speed port link. Check the connector cables from the duplex high-
speed ports on the host optical link cards to the 9973-C high-speed port connector. These jumpers are
shielded, non-crossover Cat5 type jumpers. If you are not using the supplied jumper cables and have used
longer cables, they must be shielded and adjustments may need to be made to dipswitch #S1-3. Refer to the
Set Up section of the manual for details on setting this switch.
If both loop indicators are
green
, the data ports and the Ethernet port should be operational.
Summary of Contents for 9000 Series 9973-C
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