Model 2380-500-30 Programmable Instruments
Section 3: Performance Verification
2380-500-30-905-01 Rev. A / November 2015
11
Check DC voltage setting accuracy and voltage readback accuracy
You can use the text below to verify whether the electronic load’s setting accuracy and readback
accuracy in CV mode are within the specification.
Equipment required
DC source
The DC source output voltage must be greater than electronic load’s rated
voltage
Digital voltage meter
Keithley Model 2000
High-current cable (thick cable)
22 AWG hookup wires
Low-current cable (thin cable)
18 AWG hookup wires
1. Set up the equipment, as shown in the following figure.
Figure 1: Voltage accuracy test setup
Ensure the warm-up requirement has been met, as described in the
Performance Verification
Procedures
.
To ensure accurate measurements, the voltmeter must be connected to the DUT, as close as possible
to the DUT. It is recommended to use fork lugs between the electronic load and the DUT and banana
plugs between the DUT and voltmeter.
Another solution is to use fork lugs for both connections with the DUT.
1. Set the DVM to DC voltage measuring mode and auto range mode.
2. Set the electronic load as follows:
Mode:
CV
Range: CVL for low range, CVH for high range
Voltage: 0.1 V for low range, 1 V for high range
3. Set the DC source as follows:
