R&S ESU Instrument Functions
Analyzer Mode
4.156 Operating Manual 1302.6163.12 - 03
The reference value for the phase noise measurement can be defined with REF
POINT LEVEL, REF POINT FREQUENCY and REF POINT LVL OFFSET to differ
from that of the reference marker.
Remote command: --
PH NOISE
ON | OFF
The PH NOISE ON/OFF softkey switches on/off the phase noise measurement.
Switching on is performed by means of the PHASE NOISE softkey and is only nec-
essary when the phase noise measurement has been switched off in the submenu.
Remote command: CALC:DELT1:FUNC:PNO ON
CALC:DELT1:FUNC:PNO:RES?
REF POINT
LEVEL
The REF POINT LEVEL softkey activates an entry box for the input of a reference
level other than the reference marker level. The function is identical to that of the
softkey with the same name in the MARKER menu (MKR).
Remote command: CALC:DELT1:FUNC:FIX:RPO:Y -10dB
REF POINT LVL
OFFSET
The REF POINT LVL OFFSET softkey activates an entry box for the input of an
additional level offset for the phase noise calculation.
This level offset is set to 0 dB on when the REFERENCE FIXED or PHASE NOISE
function is enabled.
Remote command: CALC:DELT:FUNC:FIX:RPO:Y:OFFS 10dB
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.
Remote 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.
Remote command: CALC:DELT:FUNC:FIX:RPO:MAX
AUTO PEAK
SEARCH
The AUTO PEAK SEARCH softkey activates an automatic peak search for the refer-
ence fixed marker 1 at the end of each particular sweep.
This function may be used for tracking of a drifting source during a phase noise
measurement. The delta marker 2, which shows the phase noise measurement
result, keeps the delta frequency value. Therefore the phase noise measurement
leads to reliable results in a certain offset although the source is drifting. Only if the
marker 2 is reaching the border of the span, the delta marker value is adjusted to be
within the span. In these cases, choose a larger span.
Remote command: CALC:DELT:FUNC:PNO:AUTO ON | OFF
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