Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

ESIB
Analyzer - Search Functions
NEXT MIN
The NEXT MIN softkey sets the active marker to the next higher of the low
peaks on the corresponding trace.
IEC/IEEE-bus commands
:CALCulate:MARKer:MIN:NEXT
:CALCulate:DELTamarker:MIN:NEXT
NEXT MIN
RIGHT
The NEXT MIN RIGHT softkey set the active marker to the next low peak to
the right of the current marker position.
IEC/IEEE-bus commands
:CALCulate:MARKer:MIN:RIGHt
:CALCulate:DELTamarker:MIN:RIGHt
NEXT MIN
LEFT
The NEXT MIN LEFT softkey sets the active marker to the next low peak to
the left of the current marker position.
IEC/IEEE-bus command
:CALCulate:MARKer:MIN:LEFT
:CALCulate:DELTamarker:MIN:LEFT
EXCLUDE LO
ON OFF
PEAK
EXCURSION
The EXCLUDE LO ON/OFF softkey switches between a restriced (ON) and
an unrestricted search range (OFF).
ON Because of non-ideal input mixer, the first LO of any analyzer can be
seen at 0 Hz. The search functions can possibly respond to this LO
level, in particular in the preset setting (FULL SPAN). To prevent
this, the search range is restricted according to the following
formula:
Search range ≥ 6 × resolution bandwidth
OFF No restriction on the search range. The search functions find also
signals below the frequency limit quoted above.
IEC/IEEE-bus command
:CALCulate:MARKer:LOEXclude ON|OFF
The PEAK EXCURSION softkey activates the entry box which sets the
minimum amount a signal level must decrease/increase before it is
recognised by the search functions (except PEAK and MIN) as a maximum or
minimum.
Input values from 0 dB to 80 dB are allowed with a resolution of 0.1 dB.
IEC/IEEE-bus command
:CALCulate:MARKer:PEXCursion 10DB
The peak excursion is preset to 6 dB. This is sufficient for the functions NEXT
PEAK (or NEXT MIN) as the next smallest (or next largest) signal is always
searched for.
Functions NEXT PEAK LEFT and NEXT PEAK RIGHT (or NEXT MIN LEFT
and NEXT MIN RIGHT) search for the next relative maximum (or minimum)
irrespective of the current signal amplitude.
As for wide bandwidths, the intrinsic noise of the ESIB may equal the 6 dB
level change preset for PEAK EXCURSION and so noise peaks are identified
as signal peaks
In this case, a value for PEAK EXCURSION which is higher than the
difference between the maximum and minimum noise display reading must be
entered.
1088.7531.12 4.205 E-15