• Primary Standards Laboratory
  • Disciplines

AC/DC Electrical

LCR Test Station   AC Voltage/Current Station
LCR Test Station   AC Voltage/Current

AC/DC Electrical Measurement Equipment & Capabilities

AC Voltage (calibrator, DMM)

  • 1 mV to 1000 V (20 Hz to 1 MHz)

AC Current (calibrator, DMM)

  • 1 mA to 20 A (60 Hz to 20 kHz)

AC/DC difference (thermal voltage converters; AC transfers standard)

  • 10 mV to 1000 V (20 Hz to 1 MHz)
  • 0.5 V to 3 V ( up to 100 MHz)

Impedance

  • LCR meters
  • Bridges
  • Inductor
  • Capacitor standards

Phase Angle

  • Synchro & resolver
  • Angle indicators
  • Phase angle meters

AC Ratio

  • 0.001 to 1 (400 Hz to 10 kHz)

DC Resistance

  • Range from 1E-04 to 1E+13 ohms

DC Ratio

  • 10:1 ratio (<100 volts)
  • 0:1 ratio (<100 volts)
  • 100:1 ratio (100 to 1000 volts)

DC Voltage (solid state reference, DMM, calibrator)

  • Range from 1 mV to 1000 volts

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Physical and Kinetic

PSL Disciplines Physical Metrology Photo   PSL Disciplines Physical Metrology Photo
Ruska Dead Weight Tester 0-40,000 psi (hydraulic)   Turbo Molecular Pump Vacuum System

Physical Metrology Equipment & Capabilities

Air Velocity

  • 30 ft/min. to 9000 ft/min. (Accurate to 3% of indicated)

Vacuum System

  • 1.0 x 10-7 Torr to 5.0 x 10-4 Torr

Pressure

  • Gas: 0 to 12,000 psi
  • Hydraulic: 0 to 40,000 psi (Accurate to 0.02%)

Thermocouple Vacuum

  • 1 millitorr to 1000 torr

Volumetric Gas Flow

  • Gas: 2 scfm to 150 scfm, 1.0%
  • Liquid: 0.25 GPM to 50 GPM

Helium Leak

  • 1.0 x 10-10 std cc/sec to 1.0x 10-3 std cc/sec

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Radio Frequency and Microwave

PSL Disciplines RF/Microwave Lab Photo   PSL Disciplines RF/Microwave Lab Photo
Semi-automated Power Sensor Test Stations, High (left) and Low (right) Frequency

RF/Microwave Lab Capabilities

Antenna Gain Range

  • Measurement range from 0.2 GHz to 110 GHz

Attenuation Measurement

  • Coaxial: 0 dB to 120 dB at 5 Hz to 50 GHz
  • Waveguide: 0 db to 80 dB at 1.7 GHz to 110 GHz

Impedance

  • Z to 200Ω at 10 MHz to 1 GHz
  • Θ to ±180 at 10 MHz to 1 GHz

Reflection Coefficient

  • Coaxial: 0 to 1 at 5 MHz to 50 GHz
  • Waveguide: 0 to 1 at 5 MHz to 110 GHz

Phase Shift

  • Coaxial: 0° to 360° at 30 kHz to 50 GHz
  • Waveguide: 0° to 360° at 1.7 MHz to 110 GHz

Noise, Noise Temperature, Excess Noise Ratio (ENR)

  • Coaxial: 10 MHz to 50 GHz
  • Waveguide: 1.7 GHz to 110 GHz

Phase Noise

  • 10 Hz to 1 MHz from carrier at 5 MHz to 18 GHz

Frequency

  • 1 Hz to 110 GHz

Time, UTC

  • IRIG-B at 100 pps, 1 kHz fo
  • IRG-C at 2 pps, 1 kHz fo
  • NASA-36 at 100 pps, 1 kHz fo

Power

  • Coaxial: 20 HZ to 50 GHz
  • Waveguide: 2.6 GHz to 18 GHz, 26.5 GHz to 110 GHz

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Electro-Optical

PSL Disciplines Electro-Optical/Laser Test Station Photo   PSL Disciplines Electro-Optical/Laser Test Station Photo
Fiber Optic Test Station   Laser Energy Calibration System at 1.06 µm

Electro-Optical/Laser Test Stations & Capabilities

Laser Power

  • Meters and Detectors
    • Wavelength: 1.064 µm
    • Power range: 50 mW to 1 W
  • Attenuators
    • Wavelength: 1.064 µm
  • Attenuation range: 0 dB to 60 dB

Laser Energy

  • Meters and Detectors
    • Wavelengths: 1.064 µm and 1.54 µm
  • Energy range: 5 mJ to 70 mJ

Fiber Optic Test Station

  • Meters
    • Wavelength: 830 nm, 1310 nm and 1560 nm
  • Power range: 0 dBm to 60 dBm

Radiometric Telescope

  • On-site Radiance Calibrations
    • El Segundo, California
    • Jacksonville, Florida
  • Fort Campbell, Tennessee

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Dimensional and Optical

PSL Disciplines Dimensional/Mechanical Photo   PSL Disciplines Dimensional/Mechanical Photo
Linear Interferometry Test Station   Optical Coordinate Measurement Machine (CMM)

Dimensional/Optical Equipment & Capabilities

Linear Dimensions Using

  • Dimensional interferometers
    • Range: up to 4 ft
    • Accuracy: 1 µin
  • Length Measurement Machine (dimensional measurement center)
    • Range: up to 12 in
    • Accuracy: 10 µin
  • Comparators of the two-probe contact design
    • Range: ± 0.01 in down to ± 0.001 in
    • Accuracy: 500 µin for large range, 5 µin for smaller range

Linear Dimensions Using Non-Contact Methods

  • Optical Coordinate Measurement Machine (CMM)
    • Range: up to 12 in
    • Accuracy: 1 µin
  • Video-based Inspection and Measurement Machine (manual and fully automated modes)
    • Range: up to 12 in
    • Accuracy: 10 µin
  • Interferometer (4 in. up to 18 in. clear aperture)
    • Accuracy: 0.1 µin

Flatness

  • Interferometer (4 in. up to 18 in. clear aperture)
    • Accuracy: 0.1 µin
  • Surface Plate
    • Range: up to 4 ft
    • Accuracy: 100 µin

Parallelism

  • Autocollimator
    • Range: ± 1000 arcsec
    • Accuracy: 0.5 arcsec
  • Surface Plate
    • Range: up to 4 ft
    • Accuracy: 1 arcsec

Angular Dimensions

  • Angular Interferometer
    • Range: ± 5°
    • Accuracy: 0.05 arcsec
  • Autocollimators
    • Range: ± 1000 arcsec
    • Accuracy: 0.25 arcsec
  • Theodolites
    • Range: 0-360°
    • Accuracy: 3 sec
  • Angular Gage Blocks
    • Range: 1 arcsec to 45°
    • Accuracy: ± 1 arcsec

Alignment of Optical and Laser Bore Sight Test Stations

  • The Dimensional/Optical calibration laboratory is heavily involved in test and alignment of laser and optical test/assembly stations

Other Calibrations

  • Laser tracker
  • Theodolite
  • Autocollimator
  • Alignment scope
  • Alignment fixtures

 

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