Agilent Technologies Signal Analyzer N9030a - Manual (Page 671)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Marker
:CALCulate:MARKer[1]|2|...12:Y?
Example CALC:MARK2:MODE POS turns on marker 2 as a normal marker.
CALC:MARK2:X 20 GHZ moves marker 2 to 20 GHz if X Axis Scale is Frequency. If X Axis Scale is
Time, an Invalid Suffix error is generated.
Notes The command :CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:Y?
returns the marker Y-axis result, if the control mode is Normal, Fixed or Delta. If the marker is
Off the response is 9.91e37 (“Not A Number”).
If no suffix is sent it will use the current Y Axis unit. If a suffix is sent that does not have units
of absolute amplitude, an invalid suffix error is generated. If a marker function is on for the
specified marker, a Settings Conflict message is generated.
Preset Trace value at center of screen. There is no way to predict what this will be after a preset.
Min – ∞ (minus infinity)
Max + ∞ (plus infinity)
Backwards Compatibility
Notes As a result of the change from position markers to value markers (see below), markers can be at
a frequency which is offscreen, whereas in the past, they were clipped to the screen edges and
hence were never offscreen. In the past, since markers could never be offscreen they always
returned a valid result. In the X-Series, markers which are offscreen return not a number as a
result; hence the potential now exists for not a number to be returned for a marker Y-Axis query.
Also, in some previous analyzers linear ratios read out on the display in %. In the X-Series they
display as dimensionless quantities. Eg, a quantity which used to display as 52% now displays
as .52. The SCPI behavior is unaffected as it has always read out the ratio rather than the
percentage.
Initial S/W Revision Prior to A.02.00
Querying the Marker Z Axis Value
The command below queries the marker Z Axis value in the Spectrogram View only. The Z Axis
value of a marker represents the time value of the marker (see “Representation of Time” under the
Spectrogram View description). In each case the marker that is addressed becomes the selected
marker.
Remote Command :CALCulate:MARKer[1]|2|...12:Z?
Notes The query returns the marker’s absolute Z Axis value if the control mode is Normal or Fixed. It
returns the offset from the marker’s reference marker if the control mode is Delta.
For Spectrogram, the Z Axis value represents the amount of time transpired since the start of the
recording of traces.
Preset 9.91E+37
Min -Infinity
Max +Infinity
Remote Language Compatibility Measurement Application Reference 671