Motorola PTP 500 User's Guide Page 181

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9 Troubleshooting (Fault Finding)
161
9 Troubleshooting (Fault Finding)
This section provides instructions for troubleshooting (fault finding) a PTP 500 link.
Perform the following procedures either on a newly installed link, or on an operational link if
communication is lost:
1. Test the hardware at one end of the link, as described in Section 9.1 “Test Link End
Ha
rdware”.
2. Test the hardware at the other end of the link, as described in Section 9.1 “Test Link
End Ha
rdware”.
3. Test the radio link, as described in Section 9.2 ”Test Radio Link”.
4.
If an installation has been struck by lightning, see Section 9.3 “Lightning Strike”.
9.1 Test Link End Hardware
When the link end hardware (PIDU Plus, LPU, ODU and cabling) has been installed, start it
and test it by following this procedure:
1. Connect the RJ45 from the ODU (or LPU if fitted) to the PIDU Plus and apply mains
or battery power to the PIDU Plus. The green Power LED should illuminate
continuously.
2. After 45 seconds, the yellow Ethernet LED should be observed starting with 10 slow
flashes.
3. Connect the RJ45 from the LAN port of the PIDU Plus to the network. The yellow
Ethernet LED should blink randomly as traffic passes through.
4. If the Power and Ethernet LEDs do not illuminate correctly, test the link end as
described in the flowchart (Figure 105) and detailed test procedu
res (Sections 9.1.1
to 9.1.7).
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