PTP 670 QUICK START GUIDE
PAGE 28
Install the LPU to PSU drop cable
Use this procedure to terminate the bottom LPU to PSU drop cable with RJ45 connectors at both ends, and with
a cable gland at the LPU end.
Warning The metal screen of the drop cable is very sharp and may cause personal injury.
ALWAYS wear cut-resistant gloves (check the label to ensure they are cut resistant).
ALWAYS wear protective eyewear.
ALWAYS use a rotary blade tool to strip the cable, not a bladed knife.
Attention Check that the crimp tool matches the RJ45 connector, otherwise the cable or
connector may be damaged.
Cut the drop cable to the length required from bottom LPU to PSU.
At the LPU end only:
Fit one cable gland and one RJ45 connector by following the procedure
Terminate with RJ45
connectors and glands
on page
26
.
Connect this cable and gland to the bottom LPU by following the procedure
Connect the drop cable to
the ODU (PSU port) and LPU
on page
24
.
At the PSU end only: Do not fit a cable gland. Strip the cable outer sheath and fit the RJ45 connector load
bar. Fit the RJ45 connector housing. To ensure there is effective strain relief, locate the cable inner sheath
under the connector housing tang:
Test resistance in the drop cable
Connect the bottom end of the copper Cat5e drop cable to a suitable drop cable tester and test that the
resistances between pins are within the correct limits, as specified in the table below. If any of the tests fail,
examine the drop cable for wiring faults.
