MKR FCTN - Analyzer R&S ESCI
1166.6004.12 4.132 E-1
REF POINT
FREQUENCY
The REF POINT FREQUENCY softkey activates an entry
box for the manual input of a reference frequency for the
REFERENCE FIXED or PHASE NOISE function.
IEC/IEEE-bus command:
CALC:DELT1:FUNC:FIX:RPO:X 10.7MHz
PEAK
SEARCH
The PEAK SEARCH sets the reference point level for delta
marker 2 in the selected measurement window to the peak of
the selected trace.
IEC/IEEE-bus command: CALC:DELT:FUNC:FIX:RPO:MAX
Measurement example:
The phase noise of a CW signal at 100 MHz with 0 dBm level is to be measured
at 800 kHz from the carrier
[PRESET] The R&S ESCI is set to the default setting.
[CENTER: 100 MHz] The center frequency is set to 100 MHz.
[SPAN: 2 MHz] The span is set to 2 MHz.
[AMPT: 0 dBm] The reference level is set to 0 dBm.
[MKR FCTN] MARKER 1 is switched on and positioned at the
maximum of the displayed trace.
[PHASE NOISE: The phase noise measurement is switched on. The delta
800 kHz] marker is positioned on the main marker and the
measured phase noise value is displayed in the marker
info field. The sample detector is used and the video
bandwidth is set to 3 x RBW. When the phase noise
measurement function is enabled, the entry of the delta
marker frequency is activated. It can be entered directly.
Measurement of the Filter or Signal Bandwidth
Menu MKR FCTN:
N dB DOWN
The N dB DOWN softkey activates the temporary markers T1 and T2 which
are n dB below the active reference marker. Marker T1 is placed to the left
and marker T2 at the right of the reference marker. The value n can be input
in a window.
The default setting is 3 dB.
The frequency spacing of the two temporary markers is indicated in the
marker info field.
If, for example, it is not possible to form the frequency spacing for the n dB
value because of the noise display, dashes are indicated instead of a
measured value.
IEC/IEEE-bus command: CALC:MARK1:FUNC:NDBD:STAT ON
CALC:MARK1:FUNC:NDBD 3dB
CALC:MARK1:FUNC:NDBD:RES?
CALC:MARK1:FUNC:NDBD:FREQ?
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