Cambium Networks PTP 670 Serie Guia De Inicio Rapido página 29

Measure the resistance
between...
Pins 1 and 2
Pins 3 and 6
Pins 4 and 5
Pins 7 and 8
Pin 1 and screen
(ODU ground)
Pin 8 and screen
(ODU ground)
(*1) A resistance of 20 Ohms is the maximum allowed when the cable is carrying Ethernet.
A resistance of 60 Ohms is the maximum allowed when the cable is carrying only power to the ODU (when
Ethernet is carried by one of the other ODU interfaces).
(*2) Ensure that these resistances are within 10% of each other by multiplying the lowest resistance by 1.1 – if any
of the other resistances are greater than this, the test has failed.
Enter To pass test, resistance
measured must be...
resistance
Ohms <20 Ohms
(60 Ohms) (*1)
Ohms <20 Ohms
(60 Ohms) (*1)
Ohms
<20 Ohms
(60 Ohms) (*1)
Ohms <20 Ohms
(60 Ohms) (*1)
K Ohms >100K Ohms
K Ohms >100K Ohms
Circle
"Pass" or
"Fail"
Pass
Fail
Pass
Fail
Pass
Fail
Pass
Fail
Pass
Fail
Pass
Fail
PAGE 29
PTP 670 QUICK START GUIDE
Additional tests and notes
Resistances must be within
10% of each other (*2).
Circle "Pass" or "Fail":
Pass
Fail
These limits apply
regardless of cable length.