Advantest U3661

Microwave Spectrum Analyzer
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The Advantest U3661 is an ultra-compact and light weight (main unit: 8.5 kg; with battery: 10.8 kg) provides a frequency range of 9kHz to 26.5GHz and a display dynamic range of 100 dB. The U3661 has a three-way power supply with battery operation (100/200 VAC, external DC, and battery pack) and 1-hour operation is possible with the specialized battery. The Advantest U3661 is ideal for field maintenance of microwave radio facilities, and digital mobile communication.

  • TFT 6-inch Color LCD and Memory Card
  • High-stability Measurement by Means of Synthesized Operation
  • 50-µs High-speed Sweep Function
  • Frequency range: 9 kHz to 26.5 GHz
  • Resolution bandwidths: 1 kHz to 3 MHz, 5 MHz in Zero span with option 26 100 Hz and 300 Hz
  • Phase Noise - 100 dBc/Hz up to 3 GHz
  • Noise floor down to - 145 dBm at RBW 100 Hz and preamplifier on Tracking generator 2.2 (2.7) GHz with option 74, output level -31 to 0 dBm in 1 dB steps
  • Input level: +27 dBm
  • Size and weight: only 148 mm x 291 mm x 330 mm and 6.5 kg/ 8.3 kg (without battery or power supply unit)
  • Three types of power supply possible: AC supply, battery (up to 1.5 h/1 h) or direct DC supply 15.2 cm (6 inch) colour LCD
  • Integrated preamplifier with a gain of >25 dB Full dynamic range, eg for GSM pulse measurements
  • Two memory card drives to PCMCIA standard for saving measurement results and instrument settings
List of Options
20 High-stability reference source
26 Narrow Resolution Bandwidth
60 CDMA setting
72 TV demodulation
74 Tracking generator
78 Channel input setting
Specifications & Attributes (Spectrum Analyzers)
Form Factor
Application Software
Phase Noise
Average Noise Level
-145 dBm
26.5 GHz

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