Technical data

208 Agilent N8201A Performance Downconverter Synthetic Instrument Module, 250 kHz to 26.5 GHz
11 Marker
the Ref and Position scroll bars.The start marker number is indicated with a number and an
R above the marker (for example, 1R) and the delta marker is indicated with a marker
number.
There are four conditions that can occur when Delta Pair mode is selected:
If marker mode is Off, the delta marker and reference marker are placed at the center of the
display.
If marker mode is Normal, the delta marker and reference marker are placed at the current
marker position on the trace.
If the marker mode is Delta, the current marker position remains unchanged and the
reference marker is placed on the trace at the reference marker position.
If the marker mode is Span Pair, the marker positions remain unchanged.
The difference between Delta Pair and Delta modes is that in Delta Pair mode the reference
marker stays on the trace and you can adjust its trace point. The note (Tracking Ref)
appears on the Delta Pair key because, in effect, the reference marker “tracks” the trace.
(By comparison, in Delta mode the reference marker does not track changes in the trace
results; it remains anchored in amplitude and frequency.)
Once positioned, the markers stay on the trace points you have selected. Ref and Delta
markers maintain their displayed x-axis location, but not their frequency values when you
change a parameter that redefines the x-axis scale. Reset these markers when parameters
such as Span or Center Freq are changed. Adjusting the Span changes the difference
between the two markers. Changing the Center changes the center point of the two
markers. Changing the frequency or sweep time of the N8201A does not change the trace
point of the markers. You cannot move the markers off the screen.
Key Path: Marker
Factory Preset: Factory preset marker mode is Off.
Range: Refer to the [:SENSe]:SWEep:POINts command under “Points" on
page 472.
Remote Command:
See “Marker" on page 203 for the command to select the control mode.
:CALCulate:MARKer[1]|2|3|4:X:STARt <param>
:CALCulate:MARKer[1]|2|3|4:X:STOP <param>
:CALCulate:MARKer[1]|2|3|4:X:POSition:STARt <integer>
:CALCulate:MARKer[1]|2|3|4:X:POSition:STOP <integer>