HP 8719ET Reference Manual page 192

WIDTH VALUE
WIDTHS on OFF
WINDOW
WINDOW: MAXIMUM
WINDOW: MINIMUM
WINDOW: NORMAL
is used to set the amplitude parameter (for example 3 dB)
that defines the start and stop points for a bandwidth
search. The bandwidth search feature analyzes a
bandpass or band reject trace and calculates the center
point, bandwidth, and Q (quality factor) for the specified
bandwidth. Bandwidth units are the units of the current
format.
turns on the bandwidth search feature and calculates the
center stimulus value, bandwidth, and Q of a bandpass or
band reject shape on the trace. The amplitude value that
defines the pass band or reject band is set using the
softkey.
WIDTH VALUE
Four markers are turned on, and each has a dedicated use.
Marker 1 is a starting point from which the search is
begun. Marker 2 goes to the bandwidth center point.
Marker 3 goes to the bandwidth cutoff point on the left,
and Marker 4 to the cutoff point on the right.
If a delta marker or fixed marker is on, it is used as the
reference point from which the bandwidth amplitude is
measured. For example, if marker 1 is the delta marker
and is set at the passband maximum, and the width value
is set to −3 dB, the bandwidth search finds the bandwidth
cutoff points 3 dB below the maximum and calculates the
3 dB bandwidth and Q.
If marker 2 (the dedicated bandwidth center point marker)
is the delta reference marker, the search finds the points
3 dB down from the center.
If no delta reference marker is set, the bandwidth values
are absolute values.
(Option 010 only) is used to specify the parameters of the
window in the transform menu.
(Option 010 only) sets the pulse width to the widest value
allowed. This minimizes the sidelobes and provides the
greatest dynamic range.
(Option 010 only) is used to set the window of a time
domain measurement to the minimum value. Provides
essentially no window.
(Option 010 only) is used to set the window of a time
domain measurement to the normal value. Usually the
most useful because it reduces the sidelobes of the
measurement somewhat.
Hardkey/Softkey Reference
Analyzer Functions
5-65