Datasheet

Model 2461 Interactive SourceMeter® Instrument User's Manual Section 9: Pulse Testing High-Brightness LEDs
2461-900-01 Rev. A / November 2015 9-7
Front-panel operations to output a high-current pulse sweep
You can use the pulse settings screen to configure the Model 2461 for pulsing from the front panel of
the instrument. It is important to set the instrument’s measure range to a level that will fit the pulse
limit magnitude before entering the pulse settings screen. If the pulse limit is set higher than the
measure range, the instrument produces an error when you press the Generate button. In this
example, the instrument is set to measure current and source voltage. The source range is set to
auto and the measure range is set to 10 A.
To access the pulse settings screen:
1. Press the MENU key.
2. Under Source, select Pulse.
All of the pulse specific settings used in this example can be set on this menu screen, including the
type of pulse (Pulse Train, Linear Sweep with Steps, Linear Sweep with Points or Logarithmic
Sweep). This example uses the Linear Sweep Points option to generate the voltage sweep.
Enter the parameters from Define the pulse sweep test parameters (on page 9-5) into the option
fields. The pulse setup is not saved until you press the Generate button. The Generate button notifies
the instrument to save all of the source, measure, and pulse settings in configuration lists and the
trigger model.
To create and run the pulse configuration lists and trigger models:
1. Select Linear Sweep Points from the list of pulse types.
2. Enter all pulse parameters into the applicable boxes.
3. Press Generate at the top of the screen to save the configuration.
4. Press the Trigger button to generate the pulses.
SCPI commands to output a high-current pulse sweep
:SOURce:FUNC VOLTage
:SOURce:VOLTage:READ:BACK OFF
:SENSe:FUNC "CURRent"
:SENSe:CURRent:RSENse ON
:SENSe:CURRent:RANGe 10
:SENSe:CURRent:NPLC .01
:SENSe:CURRent:AZERo OFF
:SOURce:PULSe:SWEep:VOLTage:LINear 0, 0, 4.15, 100, .0008, 1, "defbuffer1", 0,
.019, 1, 1, 10, 0, 0
:INIT
*WAI