R&S ESR Series, User Manual

Page: 422 / 1126

Spectrum Measurements
R&S
®
ESR
419 User Manual 1175.7068.02 ─ 12
Ph. Noise Auto Peak Search ← Phase Noise
Activates an automatic peak search for the reference fixed marker 1 at the end of each
particular sweep.
This function can be used to track a drifting source during a phase noise measure-
ment. The delta marker 2, which shows the phase noise measurement result, keeps
the delta frequency value. Therefore the phase noise measurement leads to reliable
results in a certain offset although the source is drifting. Only if the marker 2 reaches
the border of the span, the delta marker value is adjusted to be within the span. In
these cases, select a larger span.
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise:AUTO
on page 872
Select Marker (No) ← Phase Noise
Opens a submenu to select one of 16 markers and define whether the marker is a nor-
mal or a delta marker (see
"Marker 1 / Marker 2 / Marker 3 / … Marker 16,/ Marker
Norm/Delta" on page 201). "(No)" indicates the number of the currently active marker.
See "Marker 1 / Marker 2 / Marker 3 / … Marker 16,/ Marker Norm/Delta" on page 201.
Ref Fixed
Opens a submenu to set all values of a reference point. Instead of using the current
values of the reference marker (marker 1) as reference point for the delta markers,
level and frequency or time are set to fixed values and used as reference point.
Ref. Fixed On/Off ← Ref Fixed
Switches the relative measurement to a fixed reference value on or off. The level and
frequency or time values of marker 1 immediately become the reference point, but can
be altered using the corresponding softkeys (
"Ref Point Level" on page 418, "Ref Point
Frequency (span > 0)/Ref Point Time (zero span)" on page 418 and "Peak Search"
on page 418).
When set to ON, all delta markers which previously referenced marker 1 are automati-
cally set to reference the fixed marker.
The reference marker assignment can be changed using the "Marker Wizard" (see
"Marker Wizard" on page 202).
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:FIXed[:STATe]
on page 869
Ref Point Level ← Ref Fixed
Opens an edit dialog box to enter a reference level value. All relative level values of the
delta markers refer to this reference level.
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:FIXed:RPOint:Y
on page 868
Ref Point Frequency (span > 0)/Ref Point Time (zero span) ← Ref Fixed
Opens an edit dialog box to enter a frequency reference or time value. All relative fre-
quency or time values of the delta markers refer to this frequency reference. For phase
noise measurement, input of reference time is not possible.
Analysis