Measuring A-H In The Battery Test Function - Tektronix Keithley 2281 Series Reference Manual

Section 4: Measurement optimization Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual

Measuring A-H in the battery test function

To measure the battery capacity in the battery test function:
Using the front panel:
1. Connect the battery to the instrument.
2. Select the battery test function on the startup screen.
3. Press the MENU key.
4. Under Source, select (Dis)charge.
5. Set the target voltage next to V-Set.
6. Set the end current next to End condition.
7. Turn OUTPUT on in the front panel to discharge the battery.
The 2281S always absorbs current at its maximum capacity, which is approximately 1 A. This
sink current is not programmable. If the maximum output current of the battery under test is
less than 1 A, you should connect a resistor between the instrument and the battery to
prevent the battery from switching into protection mode or being damaged.
8. Press the MENU key.
9. Under Measure, select A-H/C.
10. Set the target voltage next to V-Full.
11. Set the maximum charging current next to Source I-Limit.
12. Set the end current next to End condition.
13. Return to the battery test home screen by pressing HOME on the front panel.
14. Select Measure AH in soft key area 2.
15. Set the state to On. The charging starts and data is saved to internal memory.
You can view the charging process by selecting Graph or Data Sheet in soft key area 3 when the
charging is in progress.
Using SCPI commands:
Connect the battery to the instrument.
Send the command:
:BATT:TEST:VOLT V1
Set the discharging target voltage to V1.
4-22 077114601 / March 2019