Section 2: Preparing for calibration verification and adjustment
Model 2461 Calibration and Adjustment Manual
2-2
2461-905-01 Rev. A / February 2016
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
Ranges
Digital multimeter
DC voltage
Keithley Instruments Model 2002 Digital Multimeter
200 mV
2 V
7 V
10 V
20 V
100 V
Digital multimeter
DC current
Any digital multimeter with a test uncertainty ratio (TUR) of 4:1 or better
1 µA
10 µA
100 µA
1 mA
10 mA
100 mA
1 A
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.
4 A
5 A
7 A
10 A
Resistance calibrator
Resistance
Fluke 5730A High-Performance Multifunction Calibrator
1.9 Ω
19 Ω
190 Ω
1.9 kΩ
19 kΩ
190 kΩ
1.9 MΩ
19 MΩ
100 MΩ
