Keithley Interactive SourceMeter 2450 User Manual

Section
8: Rechargeable battery measurements Model 2450 Interactive SourceMeter® Instrument
User's Manual
8-8 2450-900-01 Rev. C / December 2013
Pseudocode
hours[iteration] =
seconds[iteration]/3600
print(voltage[iteration],
current[iteration],
hours[iteration])
if voltage[iteration] <=
voltLimit then:
break
end if
iteration = iteration + 1
delay(10)
end while
• Calculate the hours taken at each iteration.
• Print the measured values.
• Compare the voltage reading from this
iteration to the voltage limit. If the
measured value is less than or equal to the
limit, break out of the loop.
• End the if statement.
• Increment the iteration count by 1.
• Delay for 10 seconds.
• End the while loop.
SMU
command
OUTP OFF
• Turn the output off.
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 included on one of the CD-ROMs that came with your Model 2450. 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 Model 2450 is configured to use 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. Select the button next to Command Set and select TSP.
4. You are prompted to reboot. Select Yes.
The TSP code in this example sets the Model 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 the figure following the example code).

Keithley Interactive SourceMeter 2450 Specifications

General

Model	2450
Type	SourceMeter
Category	Measuring Instruments
Maximum Voltage	200 V
Maximum Current	1 A
Maximum Power	20 W
Display	5-inch capacitive touchscreen
Touchscreen Display	Yes
Connectivity	USB, LAN, GPIB
Measurement Resolution	6.5 digits
Interface	USB, GPIB
Functions	Sourcing and measuring voltage and current

Summary

Safety Precautions

Responsible Body

Operators

Electrical Safety

Details electrical safety requirements, including voltage hazards and protective measures.

Handling Power and Connections

Provides instructions for safe handling of power cords, cables, and connections.

Symbol Meanings

Explains the meaning of various safety symbols used on the instrument.

Maintenance Precautions

Safety advice regarding maintenance, component replacement, and cleaning.

Using the Front-Panel Interface

Front Panel Overview

Provides a visual and textual description of the Model 2450's front panel controls.

Touchscreen Navigation

Powering the Instrument On or Off

Provides step-by-step instructions for connecting power and turning the instrument on/off.

Turning the Model 2450 Output On or Off

Explains how to control the instrument's output from the front panel or remotely.

Store Measurements on a USB Flash Drive

Provides steps to copy measurement data to a USB flash drive in CSV format.

Saving Screen Captures to USB Flash Drive

Using a Remote Interface

Remote Communication Interfaces

Discusses selecting communication interfaces for sending commands and receiving responses.

GPIB Communications

Install GPIB Driver Software

Set the GPIB Address

Provides steps to set the GPIB address from the front panel.

LAN Communications

Explains communicating with the instrument over a local area network.

Set up LAN Communications on the Instrument

Details setting up manual or automatic LAN communications on the instrument.

Set up Manual LAN Configuration

USB Communications

Connecting a Computer to the Model 2450 using USB

Using the Web Interface

Connecting to the Instrument Web Interface

LAN Troubleshooting Suggestions

Provides common troubleshooting steps for LAN connectivity issues.

Determine the Command Set

Making Basic Front-Panel Measurements

How to Make Front-Panel Measurements

Step-by-step guide to performing a basic measurement from the front panel.

Measuring Low-Resistance Devices

To Use the 4-Wire Connection Method

Low-Resistance Measurements

Set up the Measurement from the Front Panel

Step-by-step instructions to configure the instrument for low-resistance measurement.

Set up the Low-Resistance Application using SCPI Commands

Provides SCPI commands to perform 100 low-resistance measurements.

Set up the Low-Resistance Application using TSP Commands

Provides TSP code to perform 100 low-resistance measurements.

Leakage Current and Insulation Resistance

Measuring Leakage Current

Demonstrates measuring leakage current of a 1 nF capacitor over time.

Set up the Leakage Current Application using the Front Panel

Step-by-step guide to set up leakage current measurement from the front panel.

Set up the Leakage Current Application using SCPI Commands

Provides SCPI commands for capacitor leakage measurement.

Set up the Leakage Current Application using TSP Commands

Provides TSP code for capacitor leakage measurement.

Measuring Insulation Resistance

Introduces measuring insulator resistance using the Model 2450.

Set up the Insulation Resistance Application using the Front Panel

Step-by-step guide to set up insulation resistance measurement from the front panel.

Set up the Application using SCPI Commands

Provides SCPI commands for insulation resistance measurement.

Set up the Application using TSP Commands

Provides TSP code for insulation resistance measurement.

Measuring I-V Characteristics of FETs

Set up the Application using SCPI Commands with the Trigger Model

Provides SCPI commands for FET testing using a trigger model.

Set up the Application using SCPI Commands in a Linear Sweep

Provides SCPI commands for FET testing using a linear sweep.

Set up the Application using TSP Commands with the Trigger Model

Provides TSP commands for FET testing using a trigger model.

Set up the Application using TSP Commands in a Linear Sweep

Provides TSP commands for FET testing using a linear sweep.

Rechargeable Battery Measurements

Automated Battery Charge and Discharge Cycle Testing

Explains automating battery charge/discharge tests using SCPI or TSP commands.

Set up the Battery Application using SCPI Commands

Provides SCPI commands for battery application testing.

Set up the Battery Application using TSP Commands

Provides TSP code for battery application testing.

TSP Commands for Battery Testing

Measuring I-V Characteristics of Solar Cells

Device Connections

Solar Cell Characterization

Outlines steps for characterizing a solar cell using the Model 2450.

Set up the Solar Cell I-V Sweep from the Front Panel

Step-by-step guide to set up solar cell I-V sweep from the front panel.

Set up the Solar Cell I-V Sweep using SCPI Commands

Provides SCPI commands for solar cell I-V sweep.

Set up the Solar Cell I-V Sweep using TSP Commands

Provides TSP commands for solar cell I-V sweep.

TSP Commands for Solar Cell Characterization

Troubleshooting FAQs

How Do I Upgrade the Firmware?

How Do I Change the Command Set?

Change Command Set Remotely

Why Am I Getting a 5074 Event Code?

How Do I Save the Present State of the Instrument?

What Are the Quick Setup Options?