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

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

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

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

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