Agilent Technologies PSA Series Service Manual page 63

Align All Now
The key halts normal analyzer operation and forces a
Align All Now
complete realignment of the entire system.
When performing any alignment, the presence of an external 50 MHz
signal is checked. If an external 50 MHz signal > 0 dBm, is detected, the
alignment routine will be skipped and the message "High 50 MHz
power level" will be displayed. If this occurs, remove the 50 MHz
signal from the analyzer input and perform
, .
Subsys Align RF
Align Subsystem
The key allows you to align the RF, IF, and ADC circuitry
Align Subsys
of the analyzer for amplitude accuracy by activating the
, , and
Align RF Align IF
flatness and the system gain of the analyzer (explained below).
The
Align Current IF Flatness
of the current IF flatness.
The
Align Current SysGain
gain. This adjustment 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.
Restore Align Defaults
The
Restore Align Defaults
alignments, turns on frequency corrections, and resets the timebase to
the factory set values.
Chapter 2
Troubleshooting Using Front Panel Keys
keys. You can also align the current IF
Align ADC
key activates an immediate measurement
key activates a fine-tuning of the system
key loads the default values for system
Overall Troubleshooting
or
Align All Now Align
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