Agilent/Keysight 71400C – Lightwave Signal Analyzer
Agilent / Keysight Optical Spectrum Analyzers. Bandwidth: 100 kHz to 22 GHz, Sensitivity: −60 dBm (10 Hz bandwidth), Accuracy: ±1 dB across full bandwidth.
- Model
- Agilent / Keysight 71400C
- Calibration
- Available on request
- Price
- $20,089
- Status
- In stock
- RFQ ref
- 71400C
This unit
The Agilent/Keysight 71400C Lightwave Signal Analyzer characterizes optical devices - semiconductor lasers, laser transmitters, optical modulators, and detectors - by combining microwave and RF spectrum analysis with a sensitive, wide-bandwidth optical receiver. The instrument delivers calibrated measurements across baseband intensity modulation, harmonics, and noise floor analysis to 22 GHz, essential for fiber-optic communications development and production test.
Technical Specifications
Frequency and Wavelength Range- Electrical bandwidth: 100 kHz to 22 GHz
- Standard wavelength operation: 1200 nm to 1600 nm
- Option 850 wavelength range: 750 nm to 870 nm Optical Receiver Module (Agilent 70810B)
- Optical sensitivity: −60 dBm (10 Hz bandwidth)
- Displayed average noise level: better than −65 dBm (optical) in 10 Hz bandwidth
- Built-in optical attenuator: enables measurements up to 1 watt laser power
- Integrated optical power meter with analog and digital readout Measurement Performance
- Relative Intensity Noise (RIN): −165 dB/Hz (laser RIN); −150 dBc/Hz system RIN on 1 mW laser
- Optical measurement accuracy: ±1 dB across full bandwidth
- Average power accuracy (factory calibrated): ±0.65 dB ±0.5 nW ±connector variation at 1300 nm, 1550 nm, or 830 nm
- Linewidth, chirp, and frequency modulation measurement of single-frequency lasers
- Modulation characterization: analog and digital formats on single-mode fiber
Key Features
- Broadband PIN photodiode with internal optical attenuator and electrical preamplifier
- RIN measurement routine removes receiver shot noise and thermal noise for accurate laser characterization
- Functions as electrical spectrum analyzer (100 kHz to 22 GHz)
- Optical power meter with visual analog bar and precision digital display (linear or logarithmic)
- Modular Measurement System (MMS) design for integration with additional modules
Typical Applications
- Laser RIN and intensity noise characterization
- Single-frequency laser linewidth and chirp measurement
- Optical modulator and detector evaluation
- Broadband signal analysis and modulation depth testing
- High-dynamic-range optical power measurement
Compatibility & Integration Designed as part of the Modular Measurement System (MMS), enabling expansion and integration with complementary modules for complex optical test scenarios. Compatible with Agilent 11980A fiber-optic interferometer for advanced linewidth measurements.
Frequently Asked Questions
- What does the Agilent/Keysight 71400C measure and what are its key specifications?
- The 71400C is a lightwave signal analyzer designed to characterize optical signals across a 100 kHz to 22 GHz bandwidth with sensitivity down to −60 dBm at 10 Hz resolution bandwidth. I use this instrument for precise optical spectrum analysis, optical power measurement, and wavelength verification in fiber-optic communication systems. The ±1 dB accuracy across the full bandwidth makes it suitable for R&D, manufacturing, and field troubleshooting of DWDM, CWDM, and single-channel optical signals.
- What is the condition of this used 71400C, and what was verified before listing?
- I've acquired this unit from a quality inventory and it is fully functional in used condition. Before listing, I verified core measurement functionality, display operation, and mechanical integrity to ensure the 71400C meets our standard for field-ready equipment. Cosmetic wear consistent with laboratory or field use may be present; detailed condition notes are available upon request.
- Is the 71400C calibrated, and what are the calibration options?
- This unit is sold as-is; however, I offer full recalibration services starting at $450 to restore NIST-traceable measurement accuracy. Calibration for the 71400C covers the optical power measurement and wavelength reference functions across its operating bandwidth. Typical turnaround is 5–10 business days; expedited service may be available depending on current queue.
- What interfaces and connectivity does the 71400C support?
- The 71400C features GPIB (IEEE-488) for remote instrument control and integration into automated test systems. I can confirm compatibility with Keysight's measurement software suites and standard GPIB drivers; USB or Ethernet connectivity may be available through optional interface modules, which I can discuss during your inquiry. Consult the instrument manual or contact me directly for specific software version compatibility requirements.
Agilent / Keysight 71400C — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 71400C. 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.
Common Agilent / Keysight 71400C 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 71400C price
This Agilent / Keysight 71400C is listed at $20,089. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 71400C calibration cost
NIST-traceable calibration for the Agilent / Keysight 71400C 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 →
