Keysight (Agilent) U8903A

Audio Analyzer

Units Available for Purchase

Keysight (Agilent) U8903A
\200 - Audio Analyzer 2 Channel
The U8903A audio analyzer combines the functionality of a distortion meter, SINAD meter, frequency counter, AC voltmeter, DC voltmeter and FFT analyzer with a low-distortion audio source. On the bench or in a test system, its accuracy and versatility will help you make an audible difference in your end product.

The U8903A is the next-generation replacement for the widely used HP 8903B audio analyzer. To further ease the transition process, the U8903A audio analyzer features a built-in code emulator which allows the U8903A to read the old R2D2 programming codes of the 8903B. For existing customers, the code emulator is available via a new firmware upgrade.

Application Note ''Migrating Code from the 8903B to U8903A'' provides compatible equivalent commands, and sample test programs comparing the old R2D2 codes with new U8903A SCPI commands.


  • Select generator, analyzer, graph and sweep modes with one-button access
  • Characterize signal-to-noise ratio, SINAD, IMD, DFD, THD+N ratio, THD+N level, crosstalk, and more
  • Apply weighting functions, standard filters and custom filters
  • View numerical and graphical displays of measurement results
  • 2 in 1 screen (generator and analyzer in the same display screen)


  • 5ppm frequency accuracy for generator and analyzer
  • ±1% amplitude accuracy for generator and analyzer
  • -101dB analyzer residual distortion + noise at 20Hz to 20kHz
  • ±0.01dB signal flatness

Automation & Communication Interface:

  • LXI class C compliant
  • USB 2.0, LAN and GPIB connectivity
  • SCPI and IVI-COM
  • Code compatible with HP8903B
List of Options
101 Male BNC to Male BNC cable, 1.2m, jade gray
102 Male BNC to Male RCA cable, 2m, black
103 Male XLR to Female XLR, 2m, black
107 Cable, accessory- Male XLR-2 male BNC analyzer, 0.26m
108 Cable, accessory- Female XLR-2 male BNC generator, 0.26m
109 BNC accessory kit
113 Audio analyzer 2 channel with 2 in 1 digital audio card, AES3-SPDIF and DSI
114 Audio analyzer 2 channel with digital audio card, AES3-SPDIF
115 Audio analyzer 2 channel with digital audio card, DSI
1A7 ISO17025 Compliant Calibration Test Data
200 Audio Analyzer 2 Channel
A6J ANSI Z540 compliant calibration with data
A6J ANSI Z540 compliant calibration with data
ACF Japan - Japanese quick start guide, printed
R-50C-011-3 Agilent Calibration - 3 years
R-50C-011-5 Agilent Calibration - 5 years
R-50C-021-3 ANSI Z540-1-1994 Calibration - 3 years
R-50C-021-5 ANSI Z540-1-1994 Calibration - 5 years
R-51B-001-3C Return to Agilent Warranty - 3 years
R-51B-001-5C Return to Agilent Warranty - 5 years
R-51B-001-C Return to Agilent Warranty - 1 year
Specifications & Attributes (Spectrum Analyzers)
Form Factor
Specifications & Attributes (Signal Gen/Synthesizers/Sweepers)
20 KHz
Specifications & Attributes (Spectrum Analyzers)
10 Hz to 100 KHz

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