Table 8-1 Rj45 Cable Resistance Tests At The Poe Power Supply End - Motorola PTP 250 User Manual

PTP 250 User Guide

Table 8-1 RJ45 cable resistance tests at the PoE power supply end

Step Test
1
Measure the resistance between pins 1 and 2.
2
Measure the resistance between pins 3 and 6.
3
Measure the resistance between pins 4 and 5.
4
Measure the resistance between pins 7 and 8.
5
Ensure that all the results of steps 1 to 4 are within 10% of
each other as follows:
6 Measure the resistance between pin 1 and the screen (ODU
ground). If it is less than 100K ohms (regardless of cable
length), the test has failed.
7
Measure the resistance between pin 8 and the screen (ODU
ground). If it is less than 100K ohms (regardless of cable
length), the test has failed.
8
Measure the resistance between pin 1 and pin 8. If it is less
than 100K Ohms (regardless of cable length), the test has
failed.
phn-2182_003v004 (Oct 2011)
Take the minimum result and multiply by 1.1.
If any of the remaining steps 1 to 4 results are greater
than this, the test has failed.
UNDER DEVELOPMENT
Testing link end hardware
Result
Ohms
Ohms
Ohms
Ohms
PASS or FAIL
K Ohms
PASS or FAIL
K Ohms
PASS or FAIL
K Ohms
PASS or FAIL
8-11