78
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
O
p
er
ati
o
n
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.
Summary of Contents for 11974 Series
Page 5: ...4 ...
Page 8: ...7 General Information 1 General Information ...
Page 28: ...27 Installation 2 Installation ...
Page 47: ...46 Chapter2 Installation Returning Equipment for Service Installation ...
Page 48: ...47 Operation 3 Operation ...
Page 97: ...96 Chapter3 Operation Using 8561A 62A 62B Spectrum Analyzers Operation ...
Page 98: ...97 Performance Tests 4 Performance Tests ...
Page 148: ...147 Safety and Regulatory Information 5 Safety and Regulatory Information ...