SourceMeter® Instrument User's Manual Section 8:
Rechargeable battery measurements
2450-900-01 Rev. E / August 2019 8-9
Set up the battery application using TSP commands
The following TSP code is designed to be run from Keithley Instruments Test Script Builder (TSB).
TSB is a software tool that is available from tek.com/keithley
. You can install and use TSB to write
code and develop scripts for TSP-enabled instruments. Information about how to use TSB is in the
online help for TSB and in the “Introduction to TSP operation” section of the Model 2450
Reference Manual.
To use other programming environments, you may need to make changes to the example TSP code.
By default, the 2450 uses the SCPI command set. You must select the TSP command set before
sending TSP commands to the instrument.
To enable TSP commands:
1. Press the MENU key.
2. Under System, select Settings.
3. Set the Command Set to TSP.
4. At the prompt to reboot, select Yes.
The TSP code in this example sets the 2450 to the source voltage function and measure current
function. The voltage source is set to 1 V and the source limit is set to 460 mA. The voltage, current,
and relative timestamp values are returned. Measurements are made until the voltage reaches the set
level. During the test, these measurements are shown on the USER swipe screen at the bottom of the
screen. See Battery application test results (on page 8-12
) for an example.
You may need to change the current and voltage levels so that they are appropriate for the battery
you are testing.
This application refers to the discharge current rate of 1C. Discharge current can be expressed as a
C-rate to normalize against different battery capacities. A C-rate is a measure of the rate at which a
battery is discharged relative to its maximum capacity. 1C means that the discharge current
discharges the entire battery in 1 hour.
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