Key Reference 5
N9342C/43C/44C User’s Guide 105
Mode
Normal
Key access: [MARKER] > {Normal}
Activates a single frequency marker at the center
of the active trace if a marker is not already
displayed. If a marker is displayed before the
Normal function is enabled, the marker is enabled
at the position of the selected marker. The marker
number is indicated above the marker. The knob
and/or arrow keys move the marker left or right. If
a value is entered from the numeric keypad, the
marker is moved to the trace point nearest to that
value. Annotation in the active function block and
in the upper right corner indicates the frequency
and amplitude of the marker (time and amplitude,
if in zero span.) Pressing Normal turns off the Delta
function and moves the active marker to the delta
marker position.
Delta
Key access: [MARKER] > {Delta}
Activates a second marker at the position of the
first marker. (If no marker is present, two markers
appear at the center of the display). The amplitude
and frequency (or time) of the first marker is
fixed. The marker number is indicated above the
delta marker, and the same number is indicated
with an R (for example, 1R) above the reference
marker. Use the data controls to position the delta
marker. Annotation in the active function block
and in the upper- right corner of the display
indicates the frequency (or time) and amplitude
differences between the two markers. The markers
will be turned off if the scale type is changed
between log and linear.
NOTE
Pressing Delta again moves the reference marker to the active
marker position, so you are allowed to make delta
measurements from differing reference points without having
to turn off the makers and begin again.
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