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
. Additionally, verify the impedance
configuration for each NI-4134
in the subsystem before connecting cables to the NI-4134
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)
You must run the system compensation procedure using the PRIMARY,
SECONDARY, and SCOPE cables before you connect the VCSEL I-V Test
Subsystem to a load board.
following steps to connect a NI-4134 and PXIe-5162 to a load board.
Connect the PRIMARY cable to the HIGH SPEED PULSE PRIMARY output on the NI-4134 back panel.
Connect the opposite end of the PRIMARY cable to the primary receptacle on the
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.
Connect the opposite end of the SECONDARY cable to the secondary receptacle on
the load board.
Attach the 30 dB attenuator to the first available analog input channel on the PXIe-5162 front panel.
Connect the SCOPE cable to the attenuator attached to the PXIe-5162.
Connect the opposite end of the SCOPE cable to the remote sense terminal on the
If your VCSEL I-V Test
contains multiple NI-4134
pulse generators, repeat this procedure for each NI-4134
in the subsystem.