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Keysight Technologies (Agilent HP) N9938A (Fieldfox Handheld Spectrum Analyzer) Main Features and Specifications

Product Specs

  • Low end frequency limit 5 kHz
  • High End Frequency Limit 26.5 GHz
  • Resolution Bandwidth Min. 10Hz
  • Resolution Bandwidth Max. 5 MHz
  • Amplitude Range DANL to +20 dBm
  • Status -
  • Launch Date Aug-2012

See also

FieldFox microwave analyzers can be configured as cable-and-antenna analyzers, spectrum analyzers, vector network analyzers, or all-in-one combination analyzers. Each compact, 6.6-pound (3.0-kg) package is available in four frequencies: 9, 14, 18 or 26.5 GHz. To ensure durability in harsh field environments, the completely sealed enclosure is compliant with U.S. MIL-PRF-28800F Class 2 requirements. To enhance ease of use, the instrument has a vertical, or "portrait," orientation and large buttons, allowing users to easily operate the unit with their thumbs, even while wearing gloves.

FieldFox microwave spectrum analyzers provide industry-leading amplitude accuracy of ±0.5 dB at power-up, with no warm-up required, allowing field users to instantly and precisely characterize transmitter power. They can detect more signals in the band of interest with phase noise of -111 dBc/Hz at 10 kHz offset, and measure low-level signals in the presence of high-power transmitters with spur-free dynamic range of 105 dB.

N9938A handheld microwave spectrum analyzer:
  • 5 kHz to 26.5 GHz
  • Spur-free dynamic range: >=105 dB
  • Tracking generator: 30 kHz to 26.5 GHz, VSWR and reflection measurements
  • Power measurements: Channel power, occupied bandwidth and adjacent channel power ratio; power measurements with USB sensor: 9 kHz to 24 GHz (sensor dependent); built-in power meter: 5 kHz to 26.5 GHz
  • Standard 3-year warranty
  • Battery life: 3.5-hours

N9938A spectrum analyzer specifications:

  • Frequency range: 100 kHz to 26.5 GHz, usable to 5 kHz; tunable to 0 Hz or DC
  • Frequency span, range: 0 Hz (zero span), 10 Hz to maximum frequency range
  • Frequency resolution: 1 Hz
  • Sweep Acquisition, span >0 Hz
    • Range: 1 to 5000 - Number of data acquisitions per measurement. Value is normalized to the minimum required to achieve amplitude accuracy with CW signals. Auto coupled - For pulsed RF signals, manually increase the sweep acquisition value to maximize the pulse spectrum envelope
    • Resolution: 1
    • Sweep time readout: Measured value representing time required to tune receiver, acquire data, and process trace
  • Resolution bandwidth (RBW) range (-3 dB bandwidth): 10 Hz to 5 MHz; Non-zero span: 1, 1.5, 2, 3, 5, 7.5, 10 sequence, < 300 kHz, 300 kHz, 1 MHz, 3 MHz, 5 MHz; Zero span: 1, 3, 10 sequence
  • Video bandwidth (VBW): 1 Hz to 5 MHz
  • Trigger type: Free run, video, external
  • Trigger slope: Positive edge, negative edge
  • Trigger delay: Range is 0 to 10 s; Resolution is 100 ns
  • Auto trigger: forces a periodic acquisition in the absence of a trigger event
  • Auto trigger range: 0 s (off) to 10 s
  • Trace points: 101, 201, 401, 601, 801, 1001 (defaults to 401), 10,001 number of points settable through SCPI
  • Measurement range (>=100 kHz): DANL to +20 dBm
  • Displayed average noise level (DANL) with preamp off, RMS detection, log averaging, reference level of -20 dBm, normalized to 1 Hz RBW, 23 ±5 ºC
    • 2 MHz to 4.5 GHz: -137 dBm
    • >4.5 to 7 GHz: -133 dBm
    • >7 to 13 GHz: -129 dBm
    • >13 to 17 GHz: -124 dBm
    • >17 to 22 GHz: -119 dBm
    • >22 to 25 GHz: -114 dBm
    • >22 to 26.5 GHz: -110 dBm
  • Input attenuator range: 0 to 30 dB, in 5 dB steps
  • Maximum input safe level
    • Average CW power: +27 dBm, 0.5 watts
    • DC: ± 50 VDC
  • Spur free dynamic range: At 2.4 GHz >105 dB nominal, 2/3 (TOI-DANL) in 1 Hz RBW
  • Display range: Log scale, 10 divisions, 1 to 100 dB/division in 0.01 dB steps
  • Amplitude scale units: dBm, dBmV, dBµV, W, V, A, dBmA, dBµA
  • Trace detectors: Normal, positive peak, negative peak, sample, average (RMS)
  • Trace states: Clear/write, max hold, min hold, average, view, blank
  • Number of traces: 4
  • Number of averages: 1 to 10,000
  • RF input VSWR, 10 dB attenuation, nominal:
    • 10 MHz to 2.7 GHz: 1.7 : 1
    • >2.7 to 7.5 GHz: 1.5 : 1
    • >7.5 GHz: 2.2 : 1
  • Second harmonic distortion, nominal, -30 dBm signal at mixer input
    • <=4 GHz: <-60 dBc or +30 dBm
    • >4 GHz: <-80 dBc or +50 dBm
  • Third order intermodulation distortion (TOI) at 2.4 GHz, +15 dBm, typical: <1 GHz, +10 dBm; 1 to 7.5 GHz, +15 dBm; >7.5 GHz, +21 dBm