Complete the following steps to configure your hardware for S-parameter measurements using S11 one coupler per DUT port.

Refer to the hardware requirements listed in S11 1 Coupler System Hardware Requirements. Ensure all components are installed in the chassis before completing the following steps.
Note The PXIe-5831 does not have dedicated RF IN/OUT ports. Use the IF IN/OUT 1 port as RF IN and the IF IN/OUT 0 port as RF OUT when using a PXIe-5831.
Figure 9. S11 1 Coupler System Connections


  1. Connect the RF OUT or IF IN/OUT 0 port of the out port of the coupler using SMA cable.
  2. Connect the coupled port to the RF IN or IF IN/OUT 1 port.
  3. Connect the input port of the coupler to the DUT for measurement or the calibration kit for calibration using SMA cables.
  4. If using the PXIe-5841, share the local oscillator (LO) signal by connecting the TX LO OUT port to the RX LO IN port of the VST using a MMPX-to-MMPX cable. If using the PXIe-5831, no additional connection needs to be made as the LO is shared internally.