Connecting the NI-4134 and PXIe-5162 to a Load Board

After you complete the compensation procedures for the VCSEL I-V Test Subsystem, configure the connections between the subsystem and your load board to prepare to perform I-V measurements on packaged DUTs.

Before you begin this procedure, you must run system compensation and pulse compensation to characterize the performance of cables and components used in the VCSEL I-V Test Subsystem. Additionally, verify the impedance configuration for each NI-4134 in the subsystem before connecting cables to the NI-4134.

Equipment

The following equipment is required to set up 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 connect a NI-4134 and PXIe-5162 to a load board.

1. Connect the PRIMARY cable to the HIGH SPEED PULSE PRIMARY output on the NI-4134 back panel.
2. Connect the opposite end of the PRIMARY cable to the primary receptacle on the load board.
3. If you are using the half impedance NI-4134 configuration, connect the SECONDARY cable to the HIGH SPEED PULSE SECONDARY output on the NI-4134 back panel.
4. Connect the opposite end of the SECONDARY cable to the secondary receptacle on the load board.
5. Attach the 30 dB attenuator to the first available analog input channel on the PXIe-5162 front panel.
6. Connect the SCOPE cable to the attenuator attached to the PXIe-5162.
7. Connect the opposite end of the SCOPE cable to the remote sense terminal on the load board.

If your VCSEL I-V Test Subsystem contains multiple NI-4134 pulse generators, repeat this procedure for each NI-4134 in the subsystem.