Section 2: Preparing for calibration verification and adjustment
Recommended test equipment
The following table summarizes recommended calibration verification and adjustment equipment.
Test equipment uncertainty adds to the uncertainty of each measurement. Generally, test equipment
uncertainty should be at least four times smaller than the corresponding Model 2461 specifications.
Refer to the test equipment manufacturer's specifications to calculate the uncertainty, which varies
for each function and range test point.
Description
Digital multimeter
Keithley Instruments Model 2002 Digital Multimeter
Digital multimeter
Any digital multimeter with a test uncertainty ratio (TUR) of 4:1 or better
For better accuracy on the 4 A, 5 A, 7 A, and 10 A ranges, you can use
shunt resistors if the combined uncertainties for the test setup still meet
the required test uncertainty ratio of 4:1 or better. This ratio should be
based on the Model 2461 one-year accuracy specifications.
Resistance calibrator
Fluke 5730A High-Performance Multifunction Calibrator
2-2
Model 2461 Calibration and Adjustment Manual
Ranges
DC voltage
200 mV
2 V
7 V
10 V
20 V
100 V
DC current
1 µA
10 µA
100 µA
1 mA
10 mA
100 mA
1 A
4 A
5 A
7 A
10 A
Resistance
1.9 Ω
19 Ω
190 Ω
1.9 kΩ
19 kΩ
190 kΩ
1.9 MΩ
19 MΩ
100 MΩ
2461-905-01 Rev. A / February 2016
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