346 Keysight NFA Series Noise Figure Analyzers Service Guide
Service and Diagnostics Menus
Service Key Descriptions
Band Lock
Provides the ability to tune the analyzer over as large a range as can be
accommodated by the specified harmonic number and 1st LO frequency range.
As a result, this feature can be used to check performance in the frequency
band overlap regions. By definition, multi-band sweeps are not allowed.
When band lock is in effect the Advisory Event “Band Locked: Band <x>” where
“x” is a value between 0 and 6.
When band lock is not in affect the Advisory Event “Band Locked: Band <x>” is
cleared.
Dependencies/Couplings:
1. Band Lock is only available on analyzers with frequency range options
beyond 3.6 GHz
2. The individual bands available for selection also depends upon the
particular frequency range option. Enter one of the following values:
-1
Turns Band Lock to Off. Analyzer will tune from band to band
normally.
0
Locks the analyzer to Band 0.
1
Locks the analyzer to Band 1.
2
Locks the analyzer to Band 2.
3
Locks the analyzer to Band 3.
4
Locks the analyzer to Band 4.
5
Locks the analyzer to Band 5.
6
Locks the analyzer to Band 6.
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