Agilent/Keysight 70951A – Optical Spectrum Analyzer Module

Agilent / Keysight Optical Spectrum Analyzers. Accuracy: ±20% for wavelengths greater than 0.5 nm between, Dynamic Range: -55 dBm at 0.5 nm from the peak, Sensitivity: Better than -85 dBm.

Model
Agilent / Keysight 70951A
Calibration
Available on request
Price
$7,239
Status
In stock
RFQ ref
70951A
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This unit

The Agilent/Keysight 70951A is a plug-in optical spectrum analyzer module for the 70000 series modular measurement systems. It delivers spectral analysis of optical power versus wavelength across a wide spectral window, enabling precise characterization of optical components, amplifiers, LEDs, DFB lasers, and Fabry-Perot lasers. The half-width module format integrates into standard EIA rack mainframes with full MSIB and GPIB control.


Technical Specifications



  • Wavelength Range: 600 nm to 1700 nm

  • Resolution Accuracy: ±20% for wavelengths greater than 0.5 nm between 1250 nm and 1600 nm

  • Dynamic Range: -55 dBm at 0.5 nm from the peak

  • Sensitivity: Better than -85 dBm

  • Operating Temperature: 0° to +55° C

  • Storage Temperature: -30° to +71° C

  • Module Weight: 8 kg (17.6 lb)

  • Environmental Compliance: MIL-T-28800D class 5 shock and vibration; CISPR Pub. 11 and MIL-STD 461B EMI standards


Key Features



  • Half-width module format fits directly into 70000 series mainframes

  • Modular System Interface Bus (MSIB) and GPIB connectivity for automated control

  • Integral bails and handles support both benchtop and rack-mount operation

  • Optional ADC Sync and Pulsed Current capability (Option 001)

  • Built-in White Light Source available (Option 002)

  • Calibration service available


Typical Applications



  • Spectral power measurements versus wavelength

  • Optical component characterization

  • Optical amplifier analysis

  • LED, DFB laser, and Fabry-Perot laser measurement


Compatibility & Integration Designed for integration into Agilent/Keysight 70000 series mainframes including the 70004A display and 70001A mainframe. The module receives power, cooling, and digital communication through the host mainframe. MSIB provides high-speed inter-module communication; GPIB enables remote instrument control and data acquisition.

Specifications

ParameterValue
Power Range (dBm)−85 dBm sensitivity
−50 dB dynamic range at ±1 nm offset | Voltage / Current Range0 V to +5 V (external trigger) | Wavelength Range: 600 nm to 1700 nm

Frequently Asked Questions

What does the Agilent/Keysight 70951A measure, and what is its wavelength range?
The 70951A is an optical spectrum analyzer module designed to measure optical power and wavelength characteristics across the 600 nm to 1700 nm range. It delivers sensitivity better than −85 dBm, dynamic range of −50 dB at ±1 nm offset, and wavelength accuracy of ±20% for wavelengths greater than 0.5 nm. This makes it ideal for characterizing fiber-optic signals, laser sources, and optical component testing in laboratory and field environments.
What is the condition of this used 70951A, and what was verified before listing?
We've listed this unit as used, having verified its core measurement functions and optical path integrity before cataloging. While the instrument is in operational condition, we recommend our available calibration service to ensure measurement traceability to NIST standards, which is especially important if your application requires documented accuracy compliance. Calibration packages start at $450 and are arranged separately.
Does the 70951A include calibration, and what does calibration cover?
Calibration is not included with the used unit but is available separately starting at $450. A complete calibration of the 70951A verifies absolute wavelength accuracy, optical power measurement linearity, and sensitivity performance across its operating range, and typically includes a traceable calibration certificate. Contact us directly for lead times and specific calibration scope options for your application.
What interfaces and control options does the Agilent 70951A support?
The 70951A module includes a 0 V to +5 V external trigger input for remote control and synchronization with external test sequences. While the module itself is typically installed in an Agilent/Keysight optical measurement mainframe, the parent chassis typically provides GPIB and USB connectivity for instrument control and data acquisition. We recommend verifying the specific mainframe configuration and software drivers required for your test setup.

Agilent / Keysight 70951A — Repair & Calibration Service

Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 70951A. Calibration covers wavelength accuracy at 850, 1310, 1550, and 1625 nm, power level accuracy, resolution bandwidth (RBW) accuracy, and dynamic range verification. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.

Standard Cal
$450
Pass/fail cert + NIST sticker
Cal with Data
$650
Full NIST cert with measured values

Common Agilent / Keysight 70951A faults: wavelength motor failure, internal light source dimming, detector sensitivity loss. Common repairs include wavelength motor servicing, internal broadband source replacement, and detector recalibration after extended use.

Agilent / Keysight 70951A price

This Agilent / Keysight 70951A is listed at $7,239. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.

Agilent / Keysight 70951A calibration cost

NIST-traceable calibration for the Agilent / Keysight 70951A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers wavelength accuracy at 850, 1310, 1550, and 1625 nm, power level accuracy, resolution bandwidth (RBW) accuracy, and dynamic range verification. Turnaround is 1 to 3 business days after receipt. See full calibration details →