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N9951A FieldFox Handheld Software

Enable deeper insights in measurement and analysis by expanding the capabilities of your FieldFox handheld analyzer with software upgradeable capabilities. These capabilities are engineered to deliver precise measurements that agree with benchtop results into the field.

Features available for N9951A (Base model: cable and antenna analyzer):

  • Full 2-port vector network analyzer
  • VNA time domain
  • Mixed-mode S-parameters
  • TDR cable measurements
  • Vector voltmeter
  • Spectrum analyzer
  • Interference analyzer/Spectrogram
  • Preamplifier
  • Spectrum analyzer time gating
  • USB power sensor support
  • Pulse measurements with USB peak power sensor
  • Built-in power meter
  • Built-in variable DC voltage source
  • Built-in GPS receiver
  • Remove control capability

and more

  • N9951A-010 Vector Network Analyzer Time Domain N9951A-010 Vector Network Analyzer Time Domain 

    N9951A-010 Vector Network Analyzer Time Domain

    • Fully error-corrected time domain reflection or transmission response
    • Gating available to remove unwanted responses
    • View time and frequency domain data simultaneously

  • N9951A-030 Remote Control Capability N9951A-030 Remote Control Capability 

    N9951A-030 Remote Control Capability

    • Adds remote control capability to FieldFox for iDevices
    • User must supply iPad, iPhone, or iPod
    • User must download free FieldFox app from App Store

  • N9951A-208 USB Power Sensor Measurements Versus Frequency N9951A-208 USB Power Sensor Measurements Versus Frequency 

    N9951A-208 USB Power Sensor Measurements Versus Frequency

    • Sweep-frequency power measurements
    • Frequency-offset capability
    • Measurements require USB power sensor
    • Prerequisite: Option 302

  • N9951A-209 Extended Range Transmission Analysis (ERTA) N9951A-209 Extended Range Transmission Analysis (ERTA) 

    N9951A-209 Extended Range Transmission Analysis (ERTA)

    • ERTA can be used to test long lossy cable
    • ERTA requires 2 FieldFoxes, each enabled with ERTA
    • Measurements: Gain (B/R), input power, output power
    • Prerequisite: Options 210 and 233
    • Recommended: Options 235 and 307

  • N9951A-210 Vector Network Analyzer Transmission/Reflection N9951A-210 Vector Network Analyzer Transmission/Reflection 

    N9951A-210 Vector Network Analyzer Transmission/Reflection

    Option 210 provides transmission/reflection vector network analyzer capabilities. It includes S11 and S21, magnitude and phase.

  • N9951A-211 Vector Network Analyzer Full 2-port S-parameters N9951A-211 Vector Network Analyzer Full 2-port S-parameters 

    N9951A-211 Vector Network Analyzer Full 2-port S-parameters

    • Adds reverse measurements to VNA
    • All four parameters (S21, S11, S12, S22)
    • 300 kHz to 44 GHz
    • Option 210 is a prerequisite for option 211

  • N9951A-212 Mixed-Mode S-parameters N9951A-212 Mixed-Mode S-parameters 

    N9951A-212 Mixed-Mode S-parameters

    Option 212 enables mixed-mode S-parameter reflection measurements in FieldFox’s network analyzer mode. Mixed-mode S-parameters are also known as balanced measurements.

  • N9951A-215 TDR Cable Measurements N9951A-215 TDR Cable Measurements 

    N9951A-215 TDR Cable Measurements

    Option 215 adds time domain reflectometry (TDR) measurements to CAT mode. The measurements include TDR (linear rho) and TDR impedance (ohm).

  • N9951A-233 Spectrum Analyzer N9951A-233 Spectrum Analyzer 

    N9951A-233 Spectrum Analyzer

    • 5 kHz to 44 GHz
    • ± 0.5 dB amplitude accuracy with InstAlign (no warm-up needed)
    • Spur-free dynamic range > 104 dB
    • Phase noise ≤ -111 dBc/Hz @ 10 kHz offset

  • N9951A-235 Pre-amplifier N9951A-235 Pre-amplifier 

    N9951A-235 Pre-amplifier

    • 100 kHz to 44 GHz
    • 20 dB gain (100 kHz to 7.5 GHz), 15 dB gain (>7.5 kHz to 44 GHz)
    • DANL -138 dBm (≤ 44 GHz)

  • N9951A-236 Interference Analyzer and Spectrogram N9951A-236 Interference Analyzer and Spectrogram 

    N9951A-236 Interference Analyzer and Spectrogram

    • Spectrogram and waterfall display
    • Time and delta time markers
    • Record and playback

  • N9951A-238 Spectrum Analyzer Time Gating N9951A-238 Spectrum Analyzer Time Gating 

    N9951A-238 Spectrum Analyzer Time Gating

    • Spectrogram and waterfall display
    • Time and delta time markers
    • Record and playback

  • N9951A-302 External USB Power Sensor Support N9951A-302 External USB Power Sensor Support 

    N9951A-302 External USB Power Sensor Support

    • Adds Keysight USB power sensor support to FieldFox analyzers
    • Frequency and power range depend on sensor

  • N9951A-307 GPS Receiver N9951A-307 GPS Receiver 

    N9951A-307 GPS Receiver

    • Adds internal GPS receiver to FieldFox
    • Geo-location data: latitude, longitude, altitude, time, sync time/date
    • Increase frequency reference accuracy
    • Order antenna separately

  • N9951A-308 Vector Voltmeter N9951A-308 Vector Voltmeter 

    N9951A-308 Vector Voltmeter

    Using FieldFox’s vector voltmeter mode (VVM), the phase shift and electrical length of a device can be measured. The capabilities are similar to the HP 8508A vector voltmeter.

  • N9951A-309 DC Bias Variable Voltage Source N9951A-309 DC Bias Variable Voltage Source 

    N9951A-309 DC Bias Variable Voltage Source

    • Internal built-in power supply
    • Voltage: +1 to +32 V
    • Maximum current: 0.65 A
    • Maximum power: 7 watts
       

  • N9951A-310 Built-in Power Meter N9951A-310 Built-in Power Meter 

    N9951A-310 Built-in Power Meter

    • Built-in channel power meter
    • No power sensor required
    • 9 kHz to 44 GHz

  • N9951A-312 Channel Scanner N9951A-312 Channel Scanner 

    N9951A-312 Channel Scanner

    • Adds channel scanner capability for wireless signal coverage test and optimization
    • Scan up to 20 channels at once at any given frequency and BW with GPS information
    • Files can be exported to Google Earth
    • Requires Option 233, spectrum analyzer

  • N9951A-330 Pulse Measurements N9951A-330 Pulse Measurements 

    N9951A-330 Pulse Measurements

    • Pulse measurements using FieldFox and USB peak power sensors
    • Measure average power, peak power and peak to average ratio
    • Pulse profiling and pulse statistics such as rise time, fall time and PRF

  • N9951A-350 Real-time Spectrum Analyzer (RTSA) N9951A-350 Real-time Spectrum Analyzer (RTSA) 

    N9951A-350 Real-time Spectrum Analyzer (RTSA)

    • Adds RTSA for gap-free measurements.
    • Capture signals as short as 12 µs with 100% POI with full amplitude acc.
    • Detect signals as short as 22 ns when amplitude acc. not critical.
    • 10 MHz real-time bandwidth.
    • Requires spectrum analyzer option.

  • N9951A-355 Analog Demodulation N9951A-355 Analog Demodulation 

    N9951A-355 Analog Demodulation

    • Requires spectrum analyzer, Option 233
    • Adds AM and FM metrics
    • RF spectrum view and demodulated waveform displays, and audio demod
    • Carrier power, frequency, SINAD, THD
    • AM modulation depth (%), FM frequency deviation (%)