NARDA PMM CA0010, Руководство пользователя, Страница: 41 / 74

Setup and Panel Instructions 3-17
3.8.8 Max Time
To define the duration of the test it is enough to enter the relevant time in
minutes in the usual way.
3.8.9 Idle Frequency
Any frequency within the receiver range can be selected for preliminary
investigation in Idle Mode.
0,15 – 0,5 – 1,4 – 30 MHz are the standard channels, preset at the factory,
for the final test procedure.
3.8.10 Idle Level
An arbitrary Level for the Emission Limit can be chosen in Idle Mode, just
to apply a certain tolerance in the debugging phase with respect to the
limit, which will be mandatory at the final test stage.
The threshold level allowed ranges from 31 up to 120 dBµV.
3.8.11 Single Run
The “Single Run” is a PMM CA0010 unique feature, which allows a
relevant time saving in Click measuring approach.
It is usually very difficult to measure QuasiPeak values for pulsed signals,
in a way that linearity of the receiver could normally not fulfill such a special
measurement’s requirement.
PMM 9010F used together with the PMM CA0010 Click Analyzer, can
trace and memorize eventual saturation, instead, just got during automatic
measurement test procedure, in a way that, in case no saturation
conditions at all have been detected, the test result can be used directly to
soon calculate the new limit Lq, without the need of repeating the test for it
(that is to say, making possible to totally skip the second Run).
At the end of a Single Run measurement, the operator can clearly define if
the test has to be repeated with the new Lq Limit or if not repeating it at all
in case of failure at this first step, so saving time and soon starting with
further debugging of the EUT.
The operator can face, then, two different situations:
- “No”, where such a function is not used at all, and the test is carried
out in the two canonical runs;
- “Yes”, where the measurement is normally performed until the end
of the first run, then the new Limit Lq is calculated and the recorded
signal is evaluated, taking such a new Limit into account, without
acquiring a second run.