Check Sink Current Capability - Tektronix Keithley 2281 Series Reference Manual

Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual

Check sink current capability

Equipment required
AC power source
Electronic load
DC voltmeter
DC source
Set up the equipment as shown in the following figure.
Make sure the warm-up criteria have been met, as described in Performance verification conditions.
To check sink current capability:
1. Set the voltmeter as follows:

Set to measure DC volts.

Set the current range to autorange.

Calculate the amperes (instead of volt) by multiplying the voltmeter reading result by 20 (1/R
2. Check the current readback accuracy on 1 A range.
3. Set the DUT output voltage to 0 V.
4. Set the output voltage of the DC source to 20 V, set the DC source current to 1.5 A.
5. Turn the DUT output on, warm up for 1 minute.
6. Enter the voltmeter reading in the table
077114601 / March 2019
High current 18 AWG wire
High accuracy 0.05 Ω resistor
Current shunt resistor cabling
Programmable DC power source, low noise, can
work at constant current mode, output capability
higher than 20 V and 1.5 A
Figure 139: Sink current capability test setup
Sink current capability
Appendix B: Verification
(on page B-7).
).
Shunt
B-27