Noise Tests
148
MAX-610
VF Impulse Noise
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
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.
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.
