Amplitude and Distortion Checks
F-2 72A-1589 Rev. C 02/01
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The Arbiter Current Meter is used for Convertible Source Current
measurements only. All other current measurements are made with the
Julie shunts. A differential amplifier with a gain of 10 is used to boost
the shunt output for distortion measurements.
Amplitude and Distortion Checks
The amplitude and distortion check consists of measuring the amplitude
and total harmonic distortion (THD) from configured current and voltage
sources, and comparing the measurements to specified values. This test is
conducted on the following source types:
• High Current Sources
• Convertible Low Current Sources
• Convertible Voltage Sources
75 VA High Current Source
To perform the Amplitude and Distortion check on a 75 VA High Current
source:
1. Configure the F6000 for six currents (right bank) using the Pre-set
Configurations on the F6000 Configuration display in ProTesT.
Refer to ”F6000 Configuration” on page 3-7 for more information.
2. Set the range to 7.5 A and amplitude to 7.5 A. Connect an ammeter
or appropriate shunt across the Source I1 output terminals, and turn
the source ON.
Verify that the amplitude is within limits and the total harmonic
distortion (THD) is <2%.
Table F.1 Test Equipment
Equipment Manufacturer Model Number
Voltmeter Hewlett Packard Model 3458A
Phase Meter Arbiter Model 931A
Current Meter Arbiter Model 931A
Distortion Analyzer Krohn-Hite Model 6880A
100 A Shunt Julie CS-1R-100-2-05A
20 A Shunt Julie CS-1R-20-1-01A
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