Agilent
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The Agilent 8903 B Audio Analyzer measures audio from 20 Hz to 100 kHz. The Agilent 8903 B Audio Analyzer combines a distortion analyzer, frequency counter, AC voltmeter, DC voltmeter, SINAD meter, and low-distortion audio source. The Agilent 8903 B Audio Analyzer supports stimulus-response measurements such as signal-to-noise ratio and swept distortion.[1][2]
In automated test equipment (ATE) systems, the 8903B provides GPIB control of all measurement functions, combining the functions of a digital voltmeter, frequency counter, and distortion analyzer at a single input connector. The instrument also supports swept frequency response, swept distortion, and signal-to-noise measurements using its internal source and microprocessor.[1]
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The instrument operates over a frequency range of 20 Hz to 100 kHz.[1]
The 8903B provides true-rms detection, average (rms-calibrated) detection, and quasi-peak detection, selectable via front panel control.[1]
Residual distortion and noise for the analyzer section is specified to be less than –80 dB (0.01%) from 20 Hz to 20 kHz in an 80 kHz measurement bandwidth.[4]
Optional plug-in filters include a 400 Hz high-pass filter, CCITT weighting filter, CCIR weighting filter, C-message weighting filter, CCIR/ARM weighting filter, and ANSI 'A' weighting filter. The instrument accepts up to two plug-in filters.[4]
Yes, the 8903B can perform swept frequency response, swept distortion, and signal-to-noise measurements automatically using its internal audio source and microprocessor control.[1]
The following facts about the 8903 B Audio Analyzer are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 8903 B Audio Analyzer are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 8903 B Audio Analyzer are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the 8903 B Audio Analyzer are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the 8903 B Audio Analyzer are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 8903 B Audio Analyzer is not on record.
Answerable by: an OEM datasheet or a fab qualification report
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Last updated Oct 6, 2026.
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