User's Guide Part 1

Chapter 2: System hardware Ethernet cabling
One LPU and grounding kit (Table 24) is required for the PSU drop cable connection to the
ODU. If the ODU is to be connected to an auxiliary device, one additional LPU and grounding
kit is required for the Aux drop cable. Order the kits from Cambium Networks (Table 25).
Table 25
LPU and grounding kit part number
Cambium description
Cambium part number
PTP 650/700 LPU and Grounding Kit (One Kit Per End) C000065L007
Note
PTP 700 LPUs are not suitable for installation on SFP copper Cat5e Ethernet interfaces.
For SFP drop cables, obtain suitable surge protectors from a specialist supplier.
SFP optical Ethernet interfaces do not require surge protectors.
LPU for GPS drop cables
When a GPS receiver is the timing reference source for PTP-SYNC (optional), an LPU must be
installed near the point at which the GPS drop cable enters the building. A single LPU from the
PTP 650/700 LPU and Grounding Kit (C000065L007) (Table 24) is suitable. Alternatively, the
single LPU kit for PTP 250/300/500 (Figure 22) could be used.
Figure 22
LPU kit used for GPS receiver drop cables
Table 26
LPU and grounding kit part number – Use with GPS receiver drop cable only
Cambium description
Cambium part number
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