R&S FSH
Using the Markers
1145.5973.12 4.25
E-11
Controlling the delta marker:
Press the MARKER key.
Press the DELTA softkey.
The R&S FSH turns on the delta marker and places it
on the second largest signal on the trace. The
frequency and level displayed at the top of the screen
are relative to the main marker, i.e. the R&S FSH
always outputs the frequency difference and the level
difference between the points marked by the main
marker and the delta marker. Simultaneously, the
value entry box for the delta marker frequency
difference is opened.
The following actions can now be performed:
Change the delta marker position with the rotary
knob or the cursor keys.
Enter a delta marker position with the number keys
and confirm with a unit key.
Confirm the delta marker position by pressing the
ENTER key or the DELTA MARKER softkey.
Automatic marker positioning
The R&S FSH has functions that make setting markers easier or allow instrument settings to be made
on the basis of the current marker position:
•
PEAK
This function places the marker or the delta marker on the highest
value of the trace. The function acts on the active marker, whose
associated softkey labelling is highlighted in red.
•
NEXT PEAK
Relative to their current positions, this function places the marker
or the delta marker on the next highest peak of the trace.
•
MINIMUM
The marker or delta marker is placed on the lowest value of the
trace. The function acts on the active marker. When the trace is
displayed in the CLEAR/WRITE mode, the marker is placed on the
lowest maximum of the trace.
•
CENTER = MRK FREQ
When this function is called, the center frequency (CENTER) is
made equal to the current marker frequency or the delta marker
frequency, depending on which marker is activated (softkey label
highlighted in red). This function is particularly useful if you want to
investigate a signal more closely using a smaller span. This is
accomplished by first placing the signal in the center of the span
and then reducing the span.
•
REF LVL = MRK LVL
This function makes the level indicated by the marker the
reference level. This makes it easy to optimize the R&S FSH's
level display range if the levels being investigated are low.
