TELEPHONE LINE TESTER
6
pressing
“Test”
about 3 seconds to test the insulation. The LCD will display the insulation
resistance figure automatically like the following graph. If the insulation resistance is less than
1
0MΩ and there is the fluting sound, it means that the insulation resistance figure of the line is
in small side; there is bad insulation fault.
Please take off the user phone if you want to test the insulation resistance of the line.
It can be confirmed whether the fault has been canceled or not through the line insulation test
after check the user line.
6.2.3 Open test
In the normal status, connect the tester to the line which will be tested and press
“Pone/Tester”,
after confirm there is no voltage in the line, keep pressing
“Test”
for about 3
seconds. It means that the line is break if the LCD only displays 9999
MΩ.
6.2.4 Earth insulation
Like the above operation, connect the black clamp to earth line and the red clamp to the line
which will be tested. The LCD will display the earth insulation degree.
6.3 Call user & talk
Connect the test line of tester to pass
ive user’s line, press
“Phone/Tester”
(
“Phone/Tester”
LED on
), press
“Talk”
after judge there is no voltage in the line and then press
“Test”
, you
can call user telephone of the line. After both sides is off hook, and
loose “Test”, enable to
talk.
This function can be used to check the line maintenance.
6.4 Phone test
The phone quality of users can be tested by the tester.
Connect the tester line to the user phone through clamp or assistant line and ring the user
phone, it means that the user phone is normal if it rings normally; the phone quality is good if
the quality of the communication voice is good, otherwise, there are faults in the phone.
6.5 Check wire pairs
Firstly, side A and side B are in normal communication status from the agreed line. The man
in side A tell the man in side B which line links with the red clamp, and appoint this line as
16.4 M
Ω
