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pauses the execution of subsequent sequence commands for x
number of seconds. Terminate this command with
a].
Entering a 0 in wait x causes the instrument to wait for prior
sequence command activities to finish before allowing the
next command to begin. The wait 0 command only affects
the command immediately following it, and does not affect
commands later in the sequence.
selects the display warning annotation for color modification.
brings up the color
dell&ion
menu. The warning annotation
default color is black.
defines the standard (and the offset) as rectangular waveguide.
This causes the analyzer to assume a dispersive delay (see
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applies a non-linear phase shift for use with electrical delay
which follows the standard dispersive phase equation for
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rectangulw
waveguide.
men
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b
pressed,
.,
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the active function becomes the WAVEGUIDE CUTOFF
frequency, which is used in the phase equation. Choosing a
Start frequency less than the Cutoff frequency results in phase
errors.
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
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orreje&badis
wtusingthe
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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
dl3,
the bandwidth search
0nds
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.
B-62
Key
Definitions