Keysight N9038A, Service Manual

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Keysight N9038A MXE Service Guide 463
Service and Diagnostics Menus
Service Key Descriptions
IF Flatness
This function turns the corrections related to IF flatness on or off.
When IF Flatness is OFF, the Advisory Event “IF Flatness corrections OFF”
will be displayed.
When IF Flatness is ON, the Advisory Event “IF Flatness corrections OFF”
will be cleared.
Snapshot Alignments On/Off
During normal auto alignment operation, the instrument software will
perform an RBW alignment when the instrument RBW state is changed,
and every 10 minutes thereafter. These alignments can hinder
troubleshooting the instrument since they can change correction factors
when the state is changed. Turning snapshot alignments off disables the
RBW portion of these alignments for more accurate troubleshooting.
Lock Functions
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 a band lock is selected, the Advisory Event “Band Locked: Band <x>” is
displayed, where “x” is a value between 0 and 4.
When band lock is cancelled, the Advisory Event “Band Locked: Band <x>” is
cleared.
The individual bands available for selection depends upon the particular
frequency range option of the instrument.
Option 503: Band 0
Option 508: Bands 0 thru 1
Option 526: Bands 0 thru 4
LO Band Lock
Provides the ability to tune the instrument over as large a range as can be
accommodated by the specified LO Band. As a result, this feature can be used
to check performance in the LO band overlap regions. By definition, multi-band
sweeps are not allowed.
LO Band Lock is only available when the Band Lock is active.
When LO band lock is selected, the Advisory Event “LO Band Locked: Band
<x>” is displayed, where “x” is a value between 0 and 3.