R&S ESCI MKR – Analyzer
1166.6004.12 4.125 E-1
REF POINT
TIME
The REF POINT TIME softkey activates the entry box for the
input of a reference time for the REFERENCE FIXED function in
the time domain (span = 0 Hz).
IEC/IEEE-bus command:
CALC:DELT2:FUNC:FIX:RPO:X 5MS
For phase noise measurement, input of reference time is not
possible.
REF POINT
x-LEVEL
The REF POINT x-LEVEL softkey activates the entry box for the
input of a reference level on the x-axis for the REFERENCE
FIXED function when the power sweep is active.
IEC/IEEE-bus command:
CALC:DELT2:FUNC:FIX:RPO:X -5DBM
Measurement example:
Small-span harmonics measurement to increase sensitivity
CW signal (eg 100 MHz, 0 dBm) with harmonics at the RF input of R&S ESCI.
[PRESET] R&S ESCI is set to the default setting.
[CENTER: 100 MHz] The center frequency of R&S ESCI is set to 100 MHz.
[SPAN: 1 MHz] The span is set to 1 MHz.
[AMPL: 3 dBm] The reference level is set to 3 dBm (3 dB above the ex-
pected RF level).
[MKR] MARKER 1 is switched on ('1' highlighted in the softkey)
and set to the signal peak.
[MARKER 2] MARKER 2 is switched on and automatically defined as
the delta marker (DELTA is highlighted on MARKER
NORM DELTA softkey).
[REFERENCE
FIXED] The frequency and level of MARKER 1 are a reference for
the delta marker.
[CENTER: 200 MHz] The center frequency is set to 200 MHz (= frequency of the
2nd harmonic). The reference level may have to be re-
duced to see the 2nd harmonic from the noise. This does
not affect the reference level set with REFERENCE
FIXED.
[MKR->: PEAK] The delta marker jumps to the 2nd harmonic of the signal.
The level spacing of the harmonic to the fundamental is
displayed in the marker info field.
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