R&S FSQ Signal Analyzer - Rohde & Schwarz

R&S FSQ Instrument Functions
C/N /
C/NO
C/N /
C/NO
CHANNEL
BANDWIDTH
ADJUST
SETTINGS
Analyzer Mode
The C/N C/NO softkey opens the submenu for configuring the carrier/noise ratio
measurement.
C/N / C/NO
CHANNEL BANDWIDTH
ADJUST SETTINGS
The user can choose between measurement without (C/N) and measurement with
reference to the bandwidth (C/No). In addition, it is possible to select the bandwidth
of the channel and to adapt the span.
The measurements are only available in the frequency domain (span >0).
The C/N and C/NO softkeys enable and disable the measurement of the carrier/
noise ratio, the C/No measurement also being referred to a 1 Hz bandwidth.
The maximum value of the current trace is determined when the function is activated
and is marked by means of the REFERENCE FIXED marker.
The measurement is performed on the trace where MARKER 1 is located. To measure
another trace, MARKER 1 has to be shifted to the trace in question using the
SELECT TRACE softkey in the MARKER menu.
If no marker is active, MARKER 1 is activated when the function is switched on.
Remote command: CALC:MARK:FUNC:POW:SEL CN
CALC:MARK:FUNC:POW:RES? CN
CALC:MARK:FUNC:POW:SEL CN0
CALC:MARK:FUNC:POW:RES? CN0
CALC:MARK:FUNC:POW OFF
The CHANNEL BANDWIDTH softkey opens a window for selecting the measurement
channel bandwidth.
The default setting is 14 kHz.
The specified channel bandwidth allows the optimal setting of the measurement
parameters of the R&S FSQ using ADJUST SETTINGS.
Remote command: SENS:POW:ACH:BWID 14kHz
The ADJUST SETTINGS softkey adapts the span to the channel bandwidth
selected.
For the carrier/noise ratio measurement, the span is set to:
4 × channel bandwidth + measurement margin
The adjustment is performed once; if necessary, the setting can be changed later
on.
Remote command: SENS:POW:ACH:PRES CN | CN0
4.118 Operating Manual 1313.9681.12 - 01