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Advantest U3751 Spectrum Analyzer
The U3751 is an 8 GHz, portable spectrum analyzer that responds to a
wide variety of demands covering production line to maintenance applications.
The main unit weighs 5.6 kgs. or less and is designed to save space. The
U3751 is twice as fast as the previous model, and is equipped with features
such as LAN, designed specifically for the production line. Digitization
of the IF section has enabled level measurements with outstanding reproducibility.
Furthermore, with a three-way power supply that includes battery operation,
better level accuracy, and a warm-up time of five minutes, this analyzer
is easy to use in the field.
As well, the U3751 includes basic spectrum analyzer measurement functions
and options such as an internal tracking generator. All of these features
combine to make the U3571 a portable spectrum analyzer for both factory
and field use.
Features
- Compact and light-weight
308(W)x175(H)x209(D)mm
5.6kg or less
- Improved through-put
2x processing speed of previous model
- Best-in-class overall level accuracy
0.8dB(10MHz-3GHz)
1.0dB(3GHz-8GHz)
- RMS wave detector for essential power measurements
- Same operability as basic spectrum analyzers
Compact panel with optimal key positioning
6.5" TFT color LCD
Standard-equipped processing functions
Power/OBW/ACP/Counter/Harmonics/Spurious/....


Main Functions
- Frequency range
9kHz 8GHz
- Frequency span
10kHz 8GHz, or Zero span
Span accuracy : <1%
- Resolution bandwidth
300Hz 3MHz
- Frequency reference stability
2x10-6/year
- Resolution bandwidth
-85dBc/Hz (10kHz offset)
- Maximum input level
+30dBm
- Average display noise level
-118dBm+2f(GHz)dB (Preamp OFF)
-133dBm+3f(GHz)dB (Preamp ON)
- Second harmonic distortion
<-75dBc typ. (300MHz and above)
- 2-signal, third order distortion
<-50dBc (mixer input -20dBm)
- 1dB gain compressor
<-8dBm (Preamp OFF)
<-25dBm(Preamp ON)
- Sweep Time
20ms 1000s (at frequency sweep)
50µs 1000s(at Zero Span)
- Detector
RMS/Normal/Posi/Nega/Sample
- Tracking generator
10MHz 3GHz (option)
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