Agilent Technologies 11974 Series User Manual page 79

Preselected millimeter mixers
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Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
PRESEL AUTO PK
PRESEL MAN ADJ
78
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
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
softkey appears under three different
PRESEL AUTO PK
menus—
,
AMPLITUDE
INTERNAL MIXER
softkey is only available for use with preselected
PRESEL AUTO PK
external mixing. Refer to the
or the
AMPLITUDE
INTERNAL MIXER
internal mixers.
allows the user to adjust the external preselector tracking. Pressing
causes the preselector tracking number that
PRESEL MAN ADJ
applies to the marker frequency to be displayed in the active function
block. If no marker is active, pressing
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
softkey found under
SAVE
preselector data regardless of whether that data was generated while
using internal or external preselectors.
The
softkey appears under three different
PRESEL MAN ADJ
menus—
,
AMPLITUDE
INTERNAL MIXER
softkey is only available for use with preselected
PRESEL MAN ADJ
external mixing. Refer to the
or the
AMPLITUDE
INTERNAL MIXER
internal mixers.
PRESEL AUTO PK
.
, and
EXTERNAL MIXER
softkey under
PRESEL AUTO PK
menu of functions for use with
PRESEL MAN ADJ
. This overwrites any previously saved
, and
EXTERNAL MIXER
softkey under
PRESEL MAN ADJ
menu of functions for use with
. The
. This
SAVE PRSEL PK
. This
Chapter 3

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