R&S ESU Series - Page 234

Operating Manual 1302.6163.12 - 03 4.203
R&S ESU Instrument Functions
Analyzer Mode
PERCENT
MARKER
If the CCDF function is active, the PERCENT MARKER softkey allows to position
marker 1 by entering a probability value. Thus, the power which is exceeded with a
given probability can be determined very easily.
If marker 1 is in the switched-off state, it will be switched on automatically.
Remote command: CALC:MARK:Y:PERC 0...100%
RES BW The RES BW softkey sets the resolution bandwidth in the menu STATISTIC FUNC-
TION directly without switching to the corresponding menu (BW). The function of the
softkey is identical to the softkey RES BW MANUAL in the BW menu.
For correct measurement of the signal statistics the resolution bandwidth has to be
wider than the signal bandwidth in order to transmit the actual peaks of the signal
amplitude correctly. Video bandwidth is set to 10 MHz automatically with a statistic
function switched on.
Remote command: BAND 3 MHz
NO OF
SAMPLES
The NO OF SAMPLES softkey sets the number of power measurements taken into
account for the statistics.
Please note that the overall measurement time is influenced by the number of sam-
ples selected as well as by the resolution bandwidth set up for the measurement as
the resolution bandwidth directly influences the sampling rate.
Remote command: CALC:STAT:NSAM <value>
SCALING The SCALING softkey opens a submenu that allows changing the scaling parame-
ters for both the x- and the y-axis.
X-AXIS REF
LEVEL
The X-AXIS REF LEVEL softkey changes the level settings of the instrument and
sets the maximum power to be measured.
The function is identical to softkey REF LEVEL in AMPT menu.
For the APD function this value is mapped to the right diagram border. For the
CCDF function there is no direct representation of this value on the diagram as the
x-axis is scaled relatively to the MEAN POWER measured.
Remote command: CALC:STAT:SCAL:X:RLEV <value>
X-AXIS RANGE The X-AXIS RANGE softkey changes the level range to be covered by the statistics
measurement selected.
X-AXIS REF LEVEL
X-AXIS RANGE
Y-UNIT %/ABS
Y-AXIS MAX VALUE
Y-AXIS MIN VALUE
ADJUST SETTINGS
DEFAULT SETTINGS
MEAN PWR POSITION