User`s guide

78 Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
Operation
PRESEL AUTO PK
automatically peaks the preselector of the external mixer on a
desired signal on a trace. Set the trace to clear-write mode, place a
marker on the desired point, then press
PRESEL AUTO PK. The
peaking routine zooms to zero span, peaks the preselector tracking,
then returns to the original span. To read the new preselector
peaking number, press
PRESEL MAN ADJ.
The
PRESEL AUTO PK softkey appears under three different
menus—
AMPLITUDE, INTERNAL MIXER, and EXTERNAL MIXER. This
PRESEL AUTO PK softkey is only available for use with preselected
external mixing. Refer to the
PRESEL AUTO PK softkey under
AMPLITUDE or the INTERNAL MIXER menu of functions for use with
internal mixers.
PRESEL MAN ADJ
allows the user to adjust the external preselector tracking. Pressing
PRESEL MAN ADJ causes the preselector tracking number that
applies to the marker frequency to be displayed in the active function
block. If no marker is active, pressing
PRESEL MAN ADJ
automatically activates a marker at the peak.
When the tracking number is displayed in the active function block,
it can be changed using the data keys, the step keys, or the knob.
This tracking number ranges from 0 to 255. It is initialized to 128
when entering the external mixer mode of operation or whenever the
band number is changed. Changing the tracking number affects the
data in the current data table, which may be a previously saved user
data table. The resulting value, after changing this function, is only
valid for the current band. To save this data, use the
SAVE PRSEL PK
softkey found under
SAVE. This overwrites any previously saved
preselector data regardless of whether that data was generated while
using internal or external preselectors.
The
PRESEL MAN ADJ softkey appears under three different
menus—
AMPLITUDE, INTERNAL MIXER, and EXTERNAL MIXER. This
PRESEL MAN ADJ softkey is only available for use with preselected
external mixing. Refer to the
PRESEL MAN ADJ softkey under
AMPLITUDE or the INTERNAL MIXER menu of functions for use with
internal mixers.