Table Of Contents

Performing Pulse Compensation

Last Modified: November 23, 2020

Pulse compensation is a required step in the VCSEL I-V Test Subsystem setup process. You must perform pulse compensation before performing I-V measurements. After the initial setup is complete, you must perform pulse compensation again if you change the subsystem mode of operation or the settings for the pulse measurements that the VCSEL I-V Test Subsystem executes.

Before you begin, ensure you have completed system compensation.


The following equipment is required to perform pulse compensation on one subsystem channel.

  • BNC (m)-to-BNC (m) cables (x2 for full impedance NI-4134 configuration, x3 for half impedance NI-4134 configuration)
    • PRIMARY cable
    • SECONDARY cable (half impedance NI-4134 configuration only)
    • SCOPE cable
  • 30 dB attenuator (x1)

Complete the following steps to perform pulse compensation.

  1. Select Help»Find Examples from LabVIEW and navigate to Toolkits and Modules»VCSEL I-V Test to open VCSEL System and Pulse Compensation.lvproj.
  2. Open the Pulse Compensation VI.
  3. Follow the instructions on the front panel to complete pulse compensation.
After the pulse compensation is complete, the Pulse Compensation VI automatically saves pulse compensation data for I-V measurements.

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