HP 70000 series, User Manual

Page: 205 / 447

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PIT EXCURSN
Control the excursion value for marker pit operations .
Just as MKPX sets the peak excursion value for marker peak operations , MKPITX sets the pit
excursion value for marker pit operations . The MKPITX command species the minimum signal
excursion for the marker-pit functions (MKPK). Signal movement less than the pit-excursion
value is not considered a pit. T o be a pit, the skirt of the signal response must dip by at least
the pit-excursion value , and then rise by at least the pit-excursion value .
The default pit-excursion value is 3 dB for pits displayed on a logarithmic scale . This means
that any pit with an excursion of less than 3 dB on either side of its bandwidth shape is not
identied as a pit. If the marker-pit command, MKPK MIPIT , is executed on such a pit, the
spectrum analyzer does not place a marker at the pit. F or signals displayed on a linear scale ,
the default pit excursion equals
excur sion = 1 0 10
0M K P I T X
200
Note that if the pit excursion is too small, noise pits are identied as pits . Use V A VG or
SMOOTH to minimize noise pits so that signal peaks can be distinguished from noise pits .
Functional Type:
marker
Firmkey A ccess:
NNNNNNNNNNNNNNNNNNNN
Marker
Preset State:
O
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pit,min markers
A ccess the marker pit operations softkey menu.
Functional Type:
marker
Firmkey A ccess:
NNNNNNNNNNNNNNNNNNNN
Marker
Preset State:
Not aected by 4
IP
5 .
4-110 Softkey Descriptions