Atec Aeroflex-3920 - Manual (Page 4)

Audio Analyzer (390XOPT055)
With 390XOPT055, the 3920 Series provides audio spectral analysis of
the recovered audio signal, either from the audio inputs or from the
demodulated RF signal. This feature allows users to view frequency
amplitude in relation to other audio frequencies and to isolate
problems such as noise in audio circuits. With a frequency range of
1 Hz to 24 kHz, the audio analyzer covers more than the full audio
frequency range of mobiles and hand-helds. In addition, there are two
markers, plus a peak hold and average function. The user can also
capture traces that can be stored and then recalled later for use as a
comparison with a live trace. A tracking generator option
(390XOPT210) is also available as an add-on to the audio analyzer.
Audio Analyzer
2.7 GHz Frequency Range (392XOPT058)
The 3920 comes standard with a generate and receive frequency
range of 10 MHz (100 kHz usable) to 1.05 GHz. This option will
extend the range to 2.7 GHz.
Harmonics and Spurious (390XOPT060)
The ability to quickly and accurately measure the harmonics and
spurious of the transmitter of a radio is the function of 390XOPT060.
The fundamental frequency is automatically detected and measured
and then the second and third harmonics are measured and
compared. In addition, the spurious signals that are higher than the
configured level are identified and displayed. The frequency and level
of the fundamental, as well as the harmonics and spurs, are then
displayed. This option makes finding the harmonics and spurious
transmitter very simple. Simply connect the transmitter of the radio
to the 3920, key the radio and press Start.
Harmonics and Spurious
Tracking Generator (390XOPT061)
A full featured spectrum analyzer is available, standard, on all 3920s.
Available as an option to the spectrum analyzer, the 3920 tracking
generator allows the user to look at the response of a duplexer, filter
bank or other RF device on the spectrum analyzer. This option
greatly simplifies the often laborious process of checking or changing
the tuning of a duplexer. When used with the optional return loss
bridge (AC4105), the spectrum analyzer/tracking generator can
measure the return loss of an antenna or cable.
Spectrum Analyzer with Tracking Generator
Power Between Markers (390XOPT064)
Also available as an option, the power between markers option
provides a measurement of the amount of power between the
spectrum analyzer markers. With this feature, the user can set the
position of two markers on the spectrum analyzer and then measure
the amount of power in the bandwidth selected with those markers.
This will enable the user to determine the amount of power in an
adjacent channel or in the center channel.
Chinese GUI (390XOPT090)
This option enables the selection of either Chinese or English as the
language for the graphical user interface for the Analog Duplex
system. When enabled, a selection is added to the utilities screen that
allows the user to choose between English or Chinese character
display in the audio Analog Duplex system.
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