Low Phase Noise
Communications Service Monitor
All the benefits of the 2945A but with a low phase noise signal generator,
for the more critical receiver testing
Low phase noise signal generator
High stability reference oscillator (OCXO)
Accurate power measurement to 150 W
Transient and harmonic analysis
Fast response high resolution bar charts
for peaking and nulling
Tracking generator with full offset track-
Full span spectrum analyzer with ‘live’
look and listen
At under 12 kg the 2948 lightens the load to remote sites. The shape
of the 2948 is ideal for carrying; the side handle ensures that the
instrument is clear of the stairs when ascending buildings and the
2948’s depth is suitable for the instrument to be operated comfort-
ably when it is placed on the floor.
An optional bail arm handle is also available. This option allows a
stowage cover to be fitted over the front panel for storage of adapters
and further protection to the instrument’s front panel. Full opera-
tion is possible from the protective ‘ever-ready’ case so that your
investment is protected from transit damage.
Stored settings may be recalled from internal memory or from a
memory card allowing fast and straightforward setting up.
Fast Full Performance Spectrum Analyzer - provided as stan-
The 2948 Communications Service Monitor is
the lightest, most rugged service monitor avail-
able with low phase-noise signal generation.
For field work, the 2948 provides an excellent
combination of instruments for all types of
maintenance work. In the workshop it provides
all of the performance you would expect for
Low Phase-Noise Signal Generator
The 2948 differs from its 2945A cousin by provid-
ing a low phase-noise signal generator as standard.
This enhanced capability allows accurate meas-
urement of the noise characteristics of all FM
receivers and is especially beneficial when making
accurate measurement of narrow band receivers.
The performance of the 2948 enables signal-to-
noise measurements of better than 46 dB to be
made on receivers with 12.5 kHz channel spacing.
The spectrum analyzer provides spans from 100 Hz per division to
100 MHz per division and also has a fully adjustable reference level.
Speed is comparable with analog analyzers, allowing real time adjust-
ments over the displayed dynamic range. With the tracking genera-
tor provided as standard, duplexers and filters can be aligned quick-
ly and easily. An offset facility provides testing of equipment with fre-
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