18-4 Performance Verification
Recommended test equipment
Table 18-1 summarizes recommended verification equipment. You can use alternate equip-
ment, but keep in mind that test equipment accuracy will add to the uncertainty of each measure-
ment. Generally, the test equipment should have accuracy or uncertainty at least four times better
than corresponding Model 6514 specifications.
Table 18-1
Recommended verification equipment
Description Manufacturer/model Specifications
Calibrator Fluke 5700A DC voltage:
1
2V: 7ppm
20V: 5ppm
200V: 7ppm
DC current:
1
20µA: 550ppm
200µA: 100ppm
2mA: 55ppm
20mA: 55ppm
Resistance calibrator Fluke 5450A Nominal resistance:
1
1.9kΩ: 8ppm
19kΩ: 7.5ppm
190kΩ: 8.5ppm
1.9MΩ: 11.5ppm
19MΩ: 30ppm
100MΩ: 120ppm
Electrometer calibration Keithley Model 5156 Nominal resistance:
2
standard 100MΩ: 200ppm
1GΩ: 300ppm
10GΩ: 400ppm
100GΩ: 500ppm
Nominal capacitance:
2
1nF: 1,000ppm
100nF: 1,000ppm
Notes:
1. 90-day, 23˚ ±5˚C full-range accuracy specifications shown,
2. 23˚ ±3˚C accuracy of characterization.
3. Connect red and black clips to make triax short.
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