Multi LAN 350
Operation
47
Parameters in Scope Menu
Range:
setting the expected length range of interest. The instrument will
automatically adjust the optimal pulse length for the given range. A properly
set range enables the operator to view the reflections in full detail.
Mode:
Single mode is usually used (one measurement is performed). In continuous
mode the measurement is repeated until the STOP key is pressed. This can
be useful when searching for a bad contact, cable damage etc.
NVP:
Setting the NVP factor.
After the instrument is reinitialized the NVP of the cable selected in the Cable
Type Menu is used as the default value. Later the manually set NVP in this
menu is used.
Scope Result Screens
In TDR Result screen a TDR graph (amplitude/distance) for the selected pair is shown
on the display. Amplitude and distance at the cursor position are displayed under the
graph. Amplitude is shown as a percentage of nominal pulse amplitude (amplitude in a
100
Ω
test cable).
The following actions can now be performed:
ESC key:
return to Scope Main screen
NEXT PAIRS:
view next adjacent pairs graph
Left, Right key:
move cursor left and right to view amplitude at selected distance
STOP
(during continuity mode): stop the test.
In TDnext Result screen a TDnext graph (amplitude/distance) for the selected pair is
shown on the display. Amplitude and distance at the cursor position are shown under
the graph. Amplitude is shown as a percentage of nominal pulse amplitude (amplitude
in a 100
Ω
test cable).
Following actions can now be performed:
ESC key:
return to Scope Main screen
NEXT PAIRS:
view next adjacent pairs graph
Left, Right key:
move cursor left and right to view crosstalk amplitude at selected
distance
STOP
(during continuity mode): stop the test.
5.5 Autotest - copper cables
Autotest is the fastest and easiest way to test and certify LAN installations. By one
press of a button preprogrammed sequence runs. All tests needed for the verification of
the selected cable/installation system are performed. A complete cable test that
conforms to CAT6 regulations is finished in less than 60 seconds.
The preprogrammed test procedure depends on the selected Autotest type.
In the SETTING - CABLE TYPE menu copper or fiber optic measuring mode can be set.
Test standard, Cable type and Test sequence are set in the Test Standard Menu
(chapter 5.6.).
