Datasheet

In this section:
Introduction .............................................................................. 9-1
Equipment required .................................................................. 9-1
Set up remote communications ................................................ 9-2
Device connections .................................................................. 9-2
High-speed, high-power pulses from a remote interface .......... 9-4
Introduction
This example application demonstrates how to use the Model 2461 Interactive SourceMeter
instrument to generate I-V curves of high-brightness LEDs (HBLEDs) using the extended range
pulsing capabilities of the instrument. Making pulsed I-V measurements may be necessary to avoid
self-heating effects, device damage, or to observe the response of the HBLED to a pulsed signal.
The trigger model is used to control the timing in pulse mode. The minimum pulse width setting
allowed by the instrument is 150 µs, but a high-voltage or high-current pulse may require a longer
pulse width to settle to the final value you want. The digitizing capability of the Model 2461 can be
used to verify timing accuracy of voltage and current pulses.
Equipment required
 One Model 2461 1 kW Pulse Mode Interactive SourceMeter
®
Instrument
 For front-panel connections, use four insulated banana cables, such as the Keithley Instruments
Model 8608 High-Performance Clip Lead Set (one set included with the Model 2461; you will
need another set)
 For rear-panel connections, use one Model 2460-KIT Screw-Terminal Connector Kit (provided
with the Model 2461), or you can use one set of Model 2460-BAN Banana Test Leads/Adapter
Cables (with appropriate connections to the device)
 One GPIB, USB, or ethernet cable to connect the Model 2461 to a computer
Section 9
Pulse Testing High-Brightness LEDs