Manual

13
158823.02
PoE PRO
EN
Voltage Measurement
If a voltage greater than approximately
2volts is detected on any pin(s), cable testing
and length measurement are not possible.
Instead, PoE PRO displays information
about the voltage(s) present and the type of
service that those voltages indicate, where
applicable.
The display shows the detected voltage and
the pins on which it is present, together with
polarity. Depending on the port and the
voltages on the pins, the display also shows
the type of service detected on the cable…
Port Service Voltage Pins
Voice PBX >30v 3-4 or 2-5
Data
PoE (See previous section)
PBX >30v 4-5
ISDN >30v 3/6 – 4/5
Example 1 –
PBX service on
VOICE port
Example 2 –
ISDN service on
DATA port
Example 3 –
Unknown service
on DATA
Shows Pins 3 and 6
are 38volts positive
compared to Pins
4 and 5
Shows Pin 1 is
23volts positive
compared to Pin 7
Shows analog
telephone
service (PBX)
Shows digital
telephone
service (ISDN)
Warning
Indication
Shows Pin 2 is
48volts positive
compared to Pin 5