Keysight N9038A MXE Service Guide 467
Service and Diagnostics Menus
Service Key Descriptions
Current Gain System
Immediately executes an alignment of the Current System Gain, for
the purpose of improving small amplitude variations that occur as
resolution bandwidth is switched. This alignment is done by
measuring the response of the current system state configuration to
the 50 MHz amplitude reference signal. All subsequent
measurements are then compensated appropriately for absolute
amplitude accuracy. The instrument will stop any measurement
currently underway, perform the alignment, and then restart the
measurement from the beginning.
The Advisory Event “Alignment complete” is displayed when the
alignment is complete.
Align Current System Gain can be interrupted by pressing the Cancel
(ESC) front-panel key. When this occurs, no new Current System
Gain alignment data will be employed.
LO Phase Noise Adjustment
Immediately executes an optimization LO for Phase Noise, when the
optimization is finished the value is stored in non-volatile memory.
The instrument will stop any measurement currently underway,
perform the alignment, and then restart the measurement from the
beginning.
The Advisory Event “Alignment complete” is displayed when the
alignment is complete.
LO Phase Noise Adjustment can be interrupted by pressing the
Cancel (ESC) front-panel key. When this occurs, no new LO Phase
Noise Adjustment data will be employed.
Diagnostics
This menu allows access to service level diagnostics information
Show Software
This will display the version information for all of the lower level software
components in the instrument.
RF Preselector
This menu provides the ability to switch to the particular filter in the Conducted
or Radiated Band, to run the Radiated filer alignments, and the turn the RF
preselector alignment signals on and off.
Band Lock
Allows access to select either one the conducted, radiated, or through
signal paths of the instrument for troubleshooting purposes.
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