Table Of Contents

Installing a Channel Expansion Kit

Last Modified: January 13, 2021

If you are using the VCSEL I-V Test Subsystem One Channel Expansion Kit to add a channel to an existing subsystem, you must install a new PXIe-4135 SMU into the PXI chassis. After you install the SMU in the chassis, you must finish the remaining steps of the subsystem set up process to completely assemble the new subsystem channel.

Before you begin this procedure, ensure that the PXIe-1092 chassis is powered off and connected to facility ground through the AC power cable or grounding terminal.


  • #2 Phillips screwdriver

To prevent damage to the PXIe-4135 caused by ESD or contamination, handle the module using the edges or the metal bracket.

Complete the following steps to install a PXIe-4135 into the PXI chassis.

  1. Select the PXI chassis slot for the new PXIe-4135.

    NI recommends installing the new PXIe-4135 in a chassis slot next to the PXIe-4135 SMUs already installed in the chassis. This hardware arrangement ensures adequate temperature and noise control for subsystem hardware components.


    Refer to the Channel Configurations section to view an example of the recommended hardware arrangement within a PXI chassis.

  2. Unscrew the PXI filler panel from the PXI chassis using the #2 Phillips screwdriver.
  3. Remove the PXI slot blocker from the PXI chassis slot.
  4. Remove the black plastic covers from all the captive screws on the PXIe-4135 front panel.
  5. Touch any part of the chassis to discharge static electricity.
  6. Ensure that the ejector handle is in the downward (unlatched) position.
  7. Place the PXIe-4135 edges into the guides at the top and bottom of the chassis. Slide the PXIe-4135 into the slot until it is fully inserted.
  8. Latch the module in place by pulling up on the ejector handle.
  9. Secure the PXIe-4135 front panel to the chassis using the front-panel mounting screws and the #2 Phillips screwdriver.

    Tightening the top and bottom mounting screws increases mechanical stability and also electrically connects the front panel to the chassis, which can improve the signal quality and electromagnetic performance.

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