3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Notes Units are those of the trace’s domain, Hz for frequency domain, s for time domain. When the right edge
is moved, the left edge stays anchored; thus, the marker’s frequency will change
Excess Active Function resolution may require up to 15 digits to allow sub-bucket resolution in narrow
spans with many points. Our calculations indicate 15 digits plus decimal point may be required. This will
not fit on the control; so, the control value can only display to 12 digits, but the value in the active
function area should display to the full sub-bucket resolution
Sending this command selects the subopcoded marker
The unit of the parameter must match the current domain of the trace the selected marker is on, or an
invalid suffix error is generated. If no unit is sent, the fundamental unit for the trace domain is used (Hz
for freq domain traces, s for time domain traces)
Note that all the values provided in this table are only valid for frequency domain traces. If the current
domain of the trace is time domain, values and unit are different. In frequency domain, the Preset value
is dependent on the frequency range of the instrument. The default value 1.3245 GHz is appropriate
only if the instrument is a 26.5 GHz instrument (Option 526). In a 26.5 GHz Instrument, the default span
is 26.49 GHz, so 5% of the span corresponds to 1.3245 GHz
Couplings Changing Band Right necessarily changes Band Span and Band Center
Band Span is set to 0 when the marker is turned off, which means Band Right is set to the center value
at this time
Band Span is set to 5% of span when any marker function is turned on if and only if it is zero at that time
Preset If 0, Band Span is set to 5% of span, when a marker function is turned on, which affects Band Right
State Saved Saved in instrument state
Min 0 Hz
Max Infinity. Unlike legacy instruments, where the markers were forced to be on screen, X-Series marker
values are not limited and do not clip
Backwards Compatibility Command
Preset 1000, the actual value is dependent on the selected number of sweep points
Backwards
Compatibility
SCPI
:CALCulate:MARKer[1]|2|…|4:X:POSition:STOP <integer>
:CALCulate:MARKer[1]|2|…|4:X:POSition:STOP?
Backwards
Compatibility
Notes
The legacy command,
:CALCulate:MARKer[n]:X:POSition:STOP <param>
was used to control the Delta marker in trace points (buckets) in Band Pair/Delta Pair mode. There is no
new command for setting the stop of a Band Function in trace points, so, when this command is
received, the instrument first converts the specified span in trace points to the current X Axis Scale
Units (for example, frequency or time) of the trace upon which the marker resides. Then, that value is
sent to the
:CALC:MARKer[n]:FUNCtion:BAND:RIGHt <param>
command to set the stop of the marker’s Band Function
The query returns the marker function RIGHt value in trace points (buckets) by translating back based
on the current X-Axis Scale settings at the time the query is sent
See "Band Function Backwards Compatibility" on page 346 for more information
354 Spectrum Analyzer Mode User's &Programmer's Reference