Testing link end hardware
Chapter 8: Troubleshooting
8-4
phn-2510_002v000 (Mar 2012)
3
Use the LPU (if installed) to check that power is available on the cable to the ODU.
Access the connections by rotating the LPU lid as shown:
Slacken the lid nut but do not remove it.
4
Test that test point P1 on the LPU PCB corresponds to pin 1 on the RJ45. Repeat
for points P2 to P8.
This test is only valid if both the PoE power supply and the ODU are
disconnected.
5
Reconnect the ODU cable to the DATA & POWER OUT port.
6
Check that the PWR LED near the top right of the LPU PCB is illuminated to
indicate power in the Ethernet cable.
7
If any test fails, replace or repair the cable that connects the PoE power supply to
the LPU or ODU.
Summary of Contents for PTP 250
Page 1: ...Cambium PTP 250 User Guide System Release 250 02 01 ...
Page 8: ...Safety and regulatory information VI phn 2510_002v000 Mar 2012 ...
Page 20: ...List of Tables xii phn 2510_002v000 Mar 2012 ...
Page 58: ...System management Chapter 1 Product description 1 30 phn 2510_002v000 Mar 2012 ...
Page 104: ...Limit of liability Chapter 3 Legal information 3 12 phn 2510_002v000 Mar 2012 ...
Page 122: ...Notifications Chapter 4 Reference information 4 18 phn 2510_002v000 Mar 2012 ...
Page 152: ...Installing the PoE power supply Chapter 5 Installation 5 30 phn 2510_002v000 Mar 2012 ...