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Marker
Period
Sets the marker X-axis scale to Period, displaying the reciprocal of the frequency of the marker, or the
reciprocal of the frequency separation of the two markers in a delta-marker mode. The units are those of
time (sec, msec, et cetera). If the markers are at the same frequency in a delta marker mode, the result is
the reciprocal of 0, which is infinitely large. The display will show “---” and a SCPI query will return
infinity.
If Period is selected for a time domain trace, all of the points in the trace will show the same value.
Attempting to use the knob or step keys to adjust the X-axis value of the marker or entering an X-axis
value from the numeric keypad or remotely will have no effect but will generate no error.
Time
Sets the marker X-axis scale to Time, displaying the time interval between a normal marker and the start
of a sweep or the time of the delta marker relative to the reference marker. Time is the auto setting for
time domain traces. In a delta-marker mode it is the (sweep) time interval between the two markers.
Inverse Time
Sets the marker X-axis scale to Inverse Time, displaying the reciprocal time. It is useful in a delta mode
to show the reciprocal of (sweep) time between two markers. This function is only meaningful when on
a time domain trace and in the
Delta control mode. If the markers are at the same X-axis value, the time
between them is 0, so the reciprocal of sweep time is infinitely large. The display will show “---” and a
SCPI query will return infinity.
Key Path Marker, Properties, X-axis Scale
Example CALC:MARK2:X:READ PER sets the marker 2 X-axis scale to Period.
Notes 1-of-N readback is
Period
State Saved The X-axis scale setting is saved in instrument state.
Initial S/W Revision Prior to A.02.00
Key Path
Marker, Properties, X Axis Scale
Example CALC:MARK2:X:READ TIME sets the marker 2 X-axis scale to Time.
Notes 1-of-N readback is
Time
Couplings Frequency domain traces taken in FFT mode have no valid time data.
Therefore when Time is selected for markers on such traces, the X-axis value
is taken as the appropriate percentage of the displayed sweep time, which is a
calculated estimate.
State Saved The X-axis scale setting is saved in instrument state
Initial S/W Revision Prior to A.02.00
Key Path
Marker, Properties, X Axis Scale
Example :CALC:MARK2:X:READ ITIM sets the marker 2 X-axis scale to Inverse
Time.