MKR – Analyzer R&S ESCI
1166.6004.12 4.124 E-1
REFERENCE
FIXED
REF POINT
LEVEL
REF FIXED
OFF
REF FIXED
ON OFF
REF POINT
LVL OFFSET
REF POINT
FREQUENCY
REF POINT
TIME
The REFERENCE FIXED softkey defines the level and the fre-
quency or time of MARKER 1 as a reference for one or several
delta markers. The measured values for one or several
markers displayed in the marker info field are derived from this
reference point instead of the current values of the reference
marker (MARKER 1).
On actuating the softkey, reference fixed is switched on and
thus, the level value and the frequency, time or x-level value of
MARKER 1 immediately become the reference point.
Additionally, the REFERENCE FIXED softkey opens the sub-
menu where it is possible to determine manually a reference
point with level and frequency, time or x-axis level, to define a
level offset or deactivate the reference point.
The REFERENCE FIXED function is useful for the measure-
ment of the harmonic suppression at small span (fundamental
not represented).
REF FIXED
ON OFF
The REF FXD ON/OFF softkey switches on or off the relative
measurement to a fixed reference value (REFERENCE POINT)
independent of the trace.
IEC/IEEE-bus command: CALC:DELT2:FUNC:FIX ON
REF POINT
LEVEL
The REF POINT LEVEL softkey enters a reference level inde-
pendent of the reference marker level. All relative level values of
the delta markers refer to this reference level.
IEC/IEEE-bus command:
CALC:DELT2:FUNC:FIX:RPO:Y -10dBm
REF POINT
LVL OFFSET
The REF POINT LVL OFFSET softkey specifies a level offset
relevant to the reference level. The relative level values of the
delta markers refer to the reference point level plus the level
offset.
The level offset is set to 0 dB on enabling the REFERENCE
FIXED or PHASE NOISE function.
IEC/IEEE-bus command:
CALC:DELT2:FUNC:FIX:RPO:Y:OFFS 0dB
REF POINT
FREQUENCY
With the REF POINT FREQUENCY softkey a reference fre-
quency can be manually activated for the delta markers when
the REFERENCE FIXED or PHASE NOISE function is used.
IEC/IEEE-bus command:
CALC:DELT2:FUNC:FIX:RPO:X 10.7MHz
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