The Keysight Agilent 86145A is a high-performance portable Optical Spectrum Analyzer (OSA) designed for demanding spectral measurements in fiber-optic communications. As part of the 86140A family, it provides benchtop-grade wavelength accuracy, dynamic range, and measurement throughput in a lightweight, portable 14.5 kg package optimized for field deployment and manufacturing lines.

Specifications

General

ParameterValue
InterfacesDual GPIB (HP-IB) ports, Parallel (Centronics) printer port, VGA video output, two PCMCIA Type II slots, External Trigger input, Analog output
Display6.5-inch active matrix color LCD (640 x 480 VGA resolution)

Physical

ParameterValue
Power Supply90 V AC to 260 V AC, 47 Hz to 440 Hz, power consumption maximum 230 VA
Operating Temperature0 °C to +55 °C
Dimensions (W×H×D)325 mm × 222 mm × 427 mm
Weight14.5

Wavelength Specifications

ParameterValue
Wavelength Range600 nm to 1700 nm
Wavelength Repeatability+/- 0.002 nm (within 1 minute)
Wavelength Span Range0 nm (fixed tuning), and 0.2 nm to 1100 nm

Optical Power and Amplitude

ParameterValue
Power Measurement Range (Sensitivity)-90 dBm to +15 dBm (from 1250 nm to 1610 nm)
Maximum Safe Input Power+20 dBm total power (+15 dBm per channel)
Power Level Accuracy+/- 0.5 dB (at 1310 nm and 1550 nm)
Level Linearity+/- 0.05 dB (for optical inputs between -50 dBm and +10 dBm)
Optical Return Loss> 35 dB (with straight HMS-10 or physical contact connector)
Power Level Repeatability+/- 0.02 dB (over 1 minute)

Resolution and Bandwidth

ParameterValue
Resolution Bandwidth (FWHM) Range0.06 nm to 10 nm
Resolution Bandwidth Settings0.06 nm, 0.1 nm, 0.2 nm, 0.5 nm, 1.0 nm, 2.0 nm, 5.0 nm, 10.0 nm
Minimum Resolution Bandwidth0.06 nm
Maximum Resolution Bandwidth10 nm

Measurement Speed and Sweep

ParameterValue
Sweep Cycle Time< 180 ms (for 50 nm span, auto-zero off)
Trace Points Selection3 to 10001 points (user selectable)
Measurement ModesSingle sweep, Continuous sweep, Average

Optical Interfaces

ParameterValue
Optical Input ConnectorHMS-10/HP, FC/PC, SC, ST (utilizes user-exchangeable connector adapters)
Compatible Fiber TypesSingle-mode (9/125 um)
Optional Internal Calibration SourceEELED (1550 nm) with integrated Acetylene gas absorption cell (Option 006)

Analysis and Application Software

ParameterValue
WDM Analysis FeaturesChannel Power, Channel Wavelength, Signal-to-Noise Ratio (OSNR), Channel Spacing, Tilt
DFB-LD AnalysisCenter Wavelength, Spectral Width, Side Mode Suppression Ratio (SMSR)
FP-LD AnalysisMean Wavelength, Peak Wavelength, Mode Spacing, FWHM, Total Power
LED AnalysisMean Wavelength, Peak Wavelength, FWHM, Spectral Width (RMS)
EDFA AnalysisGain, Noise Figure, ASE Power (Interpolation, Pulse, and Source Subtraction methods)
Spectral Width AnalysisEnvelope, RMS, Threshold (dB down)
Marker FunctionsDual active markers, delta markers, peak/min search, noise markers
Curve Fitting CapacityBuilt-in curve fitting and mathematical trace processing operations

External Connectivity and Storage

ParameterValue
GPIB Port 1HP-IB system port (IEEE-488 compatible)
GPIB Port 2HP-IB controller port for control of external instruments
Parallel Port25-pin D-sub (Centronics) for external printer support
Video Port15-pin D-sub VGA output to external monitor
External Trigger InputBNC connector, TTL levels
Analog OutputBNC connector, 0 to 5 V (proportional to signal log amplitude)
Floppy Disk Drive3.5-inch MS-DOS compatible, 1.44 MB

Environmental and Physical

ParameterValue
Storage Temperature Range-40 °C to +75 °C
Altitude Operating RangeUp to 4,600 meters (15,000 feet)
Warm-up Time40 minutes

Physical & General

ParameterValue
Built-in PrinterInternal thermal printer

Software & Control

ParameterValue
Command LanguageSCPI (Standard Commands for Programmable Instruments)

Technology

Grating-based Optical Spectrum Analyzer

Applications

Fiber-optic component characterization, WDM system testing, laser diode analysis