NOYAFA NF-300 - Manual (Page 10)

d. Crosstalk test
As shown the figure below: it shows 3, 6 and 4, 5 with crosstalk. The line
pair with crosstalk will flash to indicate failure. In the line pair with crosstalk,
end-to-end connection is correct. However the connected lines are from
different line pairs. Line pair crosstalk will cause an over large crosstalk,
otherwise network speed will be slow.
Crosstalk interface is shown as below:
Note: In case of the non-twisted-pair cable like telephone cable,
due to over large crosstalk, it generally shown as crosstalk.
15
M:
R:
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Crosstalk line pair flashes
Wire Map: Remote
16
Language: Chinese or English
The screen is as below.
C a l i b r a t i o n ?
N o Ye s
12.5m
Length Calibrate
The calibrated cable must be more than 10m, When starting dynamic calibration,
insert the same type of cables at a specified length into “M” port. It is unnecessary
to insert into remote unit.
Select “Yes”, and then press “ENTER” key, the measured length will be shown:
At this time, press “UP” or “DOWN” key to adjust to show the actual length
as below:
- - B as e Adjust- - -
When length is given, press “ENTER” key to save the calibration value. The
screen will show calibration 1, cabliration 2...calibration 7. Users can choose
it from “Data load”, which can avoid more calibration next time.
Data loading:
Choose the functions of “Load data”, it will show 7 sets of length values which
were stored before. Select the desired one and then start to test the cable length.
C a l i b r a t e 1
C a l i b r a t e 2
C a l i b r a t e 3
C a l i b r a t e 4 C a l i b r a t e 5
C a l i b r a t e 6
C a l i b r a t e 7
R e t u r n
E n g l i s h
R e t u r n
简 体 中 文
NOYAFA
Your excellent helper in cable test! Your excellent helper in cable test!
3
4
5
6
3
4
5
6
Connection diagram of crosstalk line pair