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1017
Marker Function
Measure at Marker presents its information in a separate window which normally appears in the upper
right of the display but can be repositioned to the upper left.
Notes This query command returns comma separated values for the 3 specified
detectors and the frequency value of the marker. If a Detector is off or if no
measurement has yet completed, –999.0 will be returned. This can happen, for
example, if you are operating with too large a value of (span/sweep points)
and the Measure at Marker function does not execute but instead puts up the
advisory message, “Span per point too large, narrow span or increase RBW or
number of points” (see below).
The size of the return data array is fixed at 4. The elements are:
1. Detector 1 value ( if off, –999.0 for backwards compatibility)
2. Detector 2 value ( if off, –999.0 for backwards compatibility)
3. Detector 3 value ( if off, –999.0 for backwards compatibility)
4. Frequency of Marker
If a sweep is in process when this function executes it aborts, and restarts after
the function is complete.
This command is not backwards compatible with the E7400 and PSA option
239 so the Backwards Compatibility command is included.
Dependencies If
BW & Avg Type is in Autocoupled state, the (up to three) measurements
taken by Measure at Marker are taken with Auto Coupled settings for the
functions in the BW menu, even if those functions are in manual.
Couplings If the specified Marker is not on, the test set turns it on at center of screen and
does a peak search before performing the function.
Status Bits/OPC dependencies OPC goes true when the measurement is complete
Backwards Compatibility SCPI :MEASure:EMI:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12?
(Performs a Measure at Marker function at specified marker’s current
frequency and returns the results)
Initial S/W Revision A.02.00