PTP 670 QUICK START GUIDE
PAGE 29
Measure the
resistance between…
Enter
measured
resistanc
e
To pass test, resistance
must be…
Circle
“Pass” or
“Fail”
Additional tests and
notes
Pins 1 and 2
Ohms
<20 Ohms
(60 Ohms) (*1)
Pass
Fail
Pins 3 and 6
Ohms
<20 Ohms
(60 Ohms) (*1)
Pass
Fail
Resistances must be within
10% of each other (*2).
Circle “Pass” or “Fail”:
Pins 4 and 5
Ohms
<20 Ohms
(60 Ohms) (*1)
Pass
Fail
Pass
Fail
Pins 7 and 8
Ohms
<20 Ohms
(60 Ohms) (*1)
Pass
Fail
Pin 1 and screen
(ODU ground)
K Ohms
>100K Ohms
Pass
Fail
These limits apply
regardless of cable length.
Pin 8 and screen
(ODU ground)
K Ohms
>100K Ohms
Pass
Fail
(*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.