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4. Check the cable resistance between pins 4 & 7 at the RJ45. Check against column 4 in
Table 23.
5. Ensure that there is greater than 100K ohms between pins 1 & 8 for all cable lengths.
6. Ensure that there is greater than 100K ohms between pin 1 and ODU ground for all cable
lengths.
7. Ensure that there is greater than 100K ohms between pin 8 and ODU ground for all cable
lengths
10.2 Radio
10.2.1 No Activity
If communication over the radio link has been lost and the unit at the other end of the link can
be managed on its local network, the following procedure should be adopted:
If there is no wireless activity then the configuration should be checked. It is essential that the
following items are correct:
•
Check for Alarm conditions on Home page
•
Check that the software at each end of the link is the same version
•
Check that the Target Mac address has not been mis-configured at each end of the link
•
Check Tx Power
•
Check License keys to ensure that both units are the same product variant
•
Check Master/Slave status for each unit and ensure that one unit is Master and the other
unit is slave
•
Check that the link has not been further obscured or the ODU misaligned
•
Check the DFS page at each end of the link and establish that there is a quiet wireless
channel to use.
If there are no faults found in the configuration and there is absolutely no wireless signal, retry
the installation procedure. If this does not work then the ODU may be faulty.
153
10 Fault Finding
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