This adjustment applies only to analyzers equipped with external mixing (Option AYZ).
This adjustment sets the preselector tune out voltage to a nominal value of 1.5 volts/GHz. To adjust the tune voltage the PSA is placed in external mixing mode using a harmonic number of -10. The PSA frequency offset is set to 321.4 MHz so that the PSA center frequency will be exactly 10 times the 1st LO frequency. A DVM is connected to the PRE-SEL TUNE OUT port and the tune voltage is adjusted while the PSA 1st LO is tuned from 3.0 GHz to 6.6 GHz.
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This adjustment saves an output file which lists the corrections that were stored in the instrument. The output file is saved at this location:
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Test Equipment |
Model Number |
---|---|
Digital Multimeter |
3458A |
Cable, BNC |
8120-2582 |
BNC to Banana adapter |
1251-2277 |