U3641 Spectrum Analyzer

Lightweight, portable analyzer with synthesizer accuracy for mobile use

ADVANTEST

NOT distributed in North America & Asia
This is a discontinued product
Please note the following successor product(s):

Key Facts

  • Frequency range: U3641 9 kHz ... 3 Ghz / U3661 9 kHz ... 26.5 GHz
  • Resolution bandwidths 1 kHz ... 3 MHz, 5 MHz in Zero span with option 26 100 Hz and 300 Hz

Features

  • Measurements on mobile radio base stations
  • Radiomonitoring

Key Facts

  • Spectrum Analyzers U3641 and U3661 feature exceptional characteristics such as
    • Frequency range: U3641 9 kHz ... 3 Ghz / U3661 9 kHz ... 26.5 GHz
    • Resolution bandwidths 1 kHz ... 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 ... 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
  • Model U3641N with 75 Ohm input impedance
    • Optional OCXO reference oscillator with aging of 2 × 10–8/day
    • Operation independent of AC supply

Features & Benefits

  • Measurements on mobile radio base stations
    • Dynamic range >70 dB for measuring the power ramp of GSM base stations
    • SWR measurements on antennas in conjunction with tracking generator and SWR Bridge ZRB2
    • With BasePak hardware and software package: SWR measurements and detection of cable faults using FDR (frequency domain reflectometry)
    • Precision measurement of pulse power with the aid of various power measurement functions
    • Different power measurement functions (only U3661)
    • Gated sweep for display of spectrum due to modulation or switching
    • GSM application software for optional controller (only U3641)
  • Radiomonitoring
    • High sensitivity through built-in preamplifier up to 3 GHz for measurements down to –135 dBm with 1 kHz resolution bandwidth
    • Input of antenna correction factors and limit curves
    • Output of all results also in dBµV
    • Ideal combination with Rohde&Schwarz antennas
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