National Instruments PXIe-5694, Calibration Instructions Manual

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CALIBRATION PROCEDURE
NI PXIe-5694
This document contains the verification and adjustment procedures for the National Instruments
PXIe-5694 IF conditioning module (NI 5694). Refer to
ni.com/calibration
for more
information about calibration solutions.
Contents
Software.................................................................................................................................... 2
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 2
Test Conditions......................................................................................................................... 8
Initial Setup............................................................................................................................... 8
As-Found and As-Left Limits................................................................................................... 8
Characterization........................................................................................................................ 9
Determining Power Splitter Reference Output................................................................. 9
Calibrating Power Sensor Zero Settings........................................................................... 9
Characterizing RF Source Power ..................................................................................... 9
Synchronizing the Signal Generators ....................................................................... 9
Configuring the Hardware ........................................................................................ 10
Characterizing the Source Signal Power Levels....................................................... 11
Characterizing the Source 2 Signal Correction Level .............................................. 12
Characterizing Cable Loss................................................................................................ 14
Verification............................................................................................................................... 22
Synchronizing the Components........................................................................................ 22
Configuring the Hardware ................................................................................................ 22
Verifying Third-Order Intercept Point Out-of-Band ........................................................ 24
Determining the Path Gain ....................................................................................... 24
Verifying Third-Order Intercept Point Out-of-Band
At Multiple Input Power Levels............................................................................ 27
Adjustment................................................................................................................................ 32
Configuring the Hardware ................................................................................................ 32
Adjusting IF Gain for Bypass Path................................................................................... 33
Adjusting IF Gain ............................................................................................................. 34
Adjusting IF Flatness........................................................................................................ 37
Reverification ........................................................................................................................... 40
Worldwide Support and Services ............................................................................................. 40