Length Measurement; Cable Scan; Poe Testing - Doss NF-8209 Instruction Manual

2. Length measurement

Connect one end of cable to "Length/Port flash" port,
disconnect the cable at far end, choose "Length" on the main
menu, and select the preferred unit (meter/ yard/ feet ) before
testing.
then press start to measure and the result will come out soon
on the screen.
From the image, it means there exsits problem at 12.1m. To
make sure it is short or broke there, you can test its continuity
to know details.
Kind reminds when measuring cable length.
1. the lan cable to be tested must be de-energized.
2. disconnect the cable at the far end, no remote, no other
devices connected!
3. The range must be 2.5m~200m, otherwise, it would be
display 0 meter.

3. Cable scan

Connect the cable to be tested to "SCAN" port of tranmistter
on the left side, enter "SCAN" on the main menu, press ok to
choose scan mode you prefer, the default is digital mode, the
other modes is Analog & PoE. then set the corresponding
Your excellent helper in cable test!
5
12：80.8meter
36：12.1meter
45：80.8meter
78：80.8meter
mode on receiver accordingly. After that, hold the receiver to
locate cable at the other end, the loudest voice is the correct
one.
SCAN SCAN
Digital mode Analog mode
3.1. Attention: If the tranmistter is in PoE scan and digital
scan mode, the receiver must be in digital mode. the analog
scan in transmitter matches analog mode in receiver. If the
modes are not matched correctly, even the receiver touch the
correct cable, it won't generate tone, either.
3.2. Non-contact voltage detecting: press the "Power/Set"
button on the receiver, if the "NCV" indicator is lit on, then you
can use the receiver to detect AC voltage presence.

4. PoE Testing

4.1 Standard PoE device
It can test the information of standard PoE device, such as
POE voltage, power supply polarity, power supply mode and
also the type of PSE(af or at standard).
Connect the cable into "PoE" port, the testing result display as
below image.
P i n s p r o v i d i n g p o w e r 1 2
P o E
- -
t y p e I E E E
Po l a r i t y - 5 3 . 6 V D C
Your excellent helper in cable test!
SCAN
PoE mode
3 4 5 6 7 8
E n d s p a n M o d e
8 0 2 . 3 a t
Vo l t a g e
6