6100-Gfast Multifunction Network Analyzer Operation Manual
90
© 2020 Radiodetection Ltd
11.4 VF Impulse Noise
The
VF Impulse Noise
test allows you to measure
voice frequency impulse noise on the circuit under test.
Count
The
Count
function displays and updates results in
real
time
, for the length of time set in
Test Duration
or less
if you stop the test. The last valid results then remain
displayed.
Current Group
is the current test group name,
for example
Noise Tests
.
Current Test
displays the test being
measured. Here you can switch to another test
from the given list. However, this action will
terminate the ongoing measurement test.
VF Noise Filter
allows you to define the voice
frequency noise filter to be used, dependent on
ITU
or
ANSI Standard
mode and the
Noise
Filter
set in
Setup/Application Settings
.
Termination Resistance
is a read-only value
of
600 Ω
.
Test Duration
allows you to set the length of
time to run the test from a list of values. If
UFED Control
option is enabled, the maximum
value is limited to15 min.
Threshold Settings
button opens a new page
that allows you to set the VF impulse noise
thresholds.
Result
displays the
High, Mid, Low
counts,
respective detection levels, and
Elapsed Time
.
The pass/fail status of the
Mid
level is
displayed after 1 s and then periodically
refreshed, until you stop the test.
Test Status
displays the current state of
measurement or an error message.
To select the parameter values:
1. Press the up/down arrow keys to highlight the
desired parameter.
2. Press the left/right arrow keys to view and
select the options.
OR
3. Press
on a value to open a list box of
options.
4. Press
to confirm the value.
VF Impulse Noise Threshold Settings
The
Threshold Settings
page allows you to set the
VF
Impulse Noise Threshold
values for the test.
Low Counter Power Detection
Level defines
the low threshold limits for the impulse noise
test.
Power Separation
defines the level difference
between the
Low, Mid,
and
High
thresholds.
Specify a value between 1 and 6 dB.
Mid Counter
allows you to set the threshold
value for this counter.
Type
is the threshold limit of the
Mid Counter
:
either
Maximum
or
Minimum
.
Enabled
is a flag to use the current
Mid
Counter
threshold: either
Yes
or
No
.
