L3 NARDA PMM 9010, User Manual

Page: 43 / 108

Manual Mode Operating Instructions 6-1
6 - Manual Mode
Operating Instructions
6.1 Introduction
The MANUAL mode is a very useful feature to manually control the
receiver and to deeply investigate electrical signals modifying the
parameters of receiver exactly as per the needs of the Test Engineer.
It is possible, for example, to observe the signals exceeding the limits
frequency by frequency; evaluating their levels measured simultaneously
with 4 different detectors (Peak, QuasiPeak, Average and RMS); listening
to them after a demodulation, etc.
To enter in .
Manual Mode press the key in the main menu, and
immediately the first Manual window opens as follow.
Fig. 6-1 Manual
In manual mode the levels corresponding to the detectors in use are
displayed both in analogue and in digital format, and exactly as for the other
operating modes, all the relevant information are reported on the screen.
From the upper left corner, the User can see if the Preselector is ON or
OFF; if the Preamplifier is ON or OFF; the resolution bandwidth, the longest
hold time associated to the detectors in use; if the input attenuation is
Automatic or Manual and the set attenuation and if the Minimum
attenuation is 10 dB or 0dB; if there a demodulation and the level of the
volume, represented by a small black bar.
Then there are three or fours vertical bars representing the detectors and
indicating in analogue and digital (the figures below each bar) the level
measured; on top of the bars the relevant detector, the unit in use and the
tuned frequency. The analogue scale of the analogue bars is set
automatically by the receiver.
Document 9010EN-70306-1.59 - © NARDA 2007