274 Chapter4
Key Function Descriptions
Key Descriptions
SAVE AMPCOR Saves the current table of frequency-amplitude
correction points. Front-panel key access:
CAL
SAVE PRSEL PK For use only with internal mixing or preselected
external mixing. Saves the current preselector-peak
data in the user data table. This does not affect the
preselector data that is set at the factory or by service
personnel. To recall saved data to the current data
table, use either FACTORY PRSEL PK to recall the
factory data table, or RECALL PRSEL PK to recall the
user data table. Both of these softkeys are located
under
RECALL. The three available tables of preselector
data are described below.
1. Current Data Table contains the data used to tune
the preselector. The data is obtained from either the
user data table or the factory data table. Use either
the PRESEL MAN ADJ or PRESEL AUTO PK
softkey (located under
AMPLITUDE or AUX CTRL) to
modify the data in the current table. To save the
data, use SAVE PRSEL PK. If the current data is
not saved, it is lost when the instrument is preset,
turned off, or whenever bands are changed in the
case of external mixing.
2. Factory Data Table is the default data table for
internal mixing. This data is set at the factory and
can be changed only by service personnel. This data
is copied to the current data table when
PRESET is
pressed. The data in this table is sufficient for
virtually all applications, because this is the table
that allows the spectrum analyzer to meet its
published specifications.
3. User Data Table is the current data table that was
saved last and is recalled using the RECALL PRSEL
PK softkey. The same user data table is used to store
either internal or external preselector data. The
preselector data saved depends on the current mode
(internal or external). Therefore, when in external
mixer mode and internal preselector data was
previously saved, recalling the user data table will
cause an ERR 704 PRESELCT error message. ERR 704
also occurs if internal mixer mode and external
preselector data is recalled.
Front-panel key access:
SAVE
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