R&S FSMR, Operating Manual

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Traces - Analyzer R&S FSMR
1166.3363.12 4.11-8 E-2
Use the CURSOR UP or CURSOR DOWN keys to select a specific folder or
file. To change the path or select a file, confirm your selection with the
ENTER key.
Note that the R&S FSMR overwrites existing files with the new data.
IEC/IEEE command
FORM ASC;
MMEM:STOR:TRAC 1,'TRACE.DAT'
DECIM SEP
. ,
The DECIM SEP softkey selects the decimal separator between '.' (decimal point)
and ',' (comma) with floating-point numerals for the function ASCII FILE EXPORT.
With the selection of the decimal separator different language versions of
evaluation programs (eg MS-Excel) can be supported.
IEC/IEEE-bus command
FORM:DEXP:DSEP POIN
COPY
TRACE
The COPY TRACE softkey copies the screen contents of the current trace into
another trace memory. The desired memory is selected by entering the number 1, 2 or 3.
Upon copying, the contents of the selected memory is overwritten and the new
contents displayed in view mode.
IEC/IEEE-bus command
TRAC:COPY TRACE1,TRACE2
Selection of Detector
The detectors of the
R&S FSMR
are implemented as pure digital devices.
The detectors available are
the peak detectors which
determine
the maximum and/or the minimum value from a number of
samples, the rms detector which measures the power within a pixel, the average, the quasipeak and the
sample detector. The sample detector routes through the sampled data without any modification or
performs a data reduction by suppressing measured values that cannot be displayed.
The peak detectors compare the current level value with the maximum or minimum level from the
previously sampled data. When the number of samples defined by the instrument setting is reached, the
samples are combined in displayable pixels. Each of the
625 pixels of the display thus represents 1/625
of the sweep range and contains all single measurements (frequency samples) in this subrange in
compressed form. For each trace display mode an optimized detector is selected automatically. Since
peak detectors and sample detector are connected in parallel, a single sweep is sufficient for collecting
all detector values for 3 traces.
Peak detectors
(
MAX PEAK and MIN PEAK )
Peak detectors are implemented by digital comparators. They determine
the largest of all positive (max peak) or the smallest of all negative (min
peak) peak values of the levels measured at the individual frequencies
which are displayed in one of the 625 pixels. This procedure is repeated for
each pixel so that for wide frequency spans and despite the limited
resolution of the display a large number of measurements can be taken into
consideration for the display of the spectrum.
Autopeak detector The AUTOPEAK detector combines the two peak detectors. The max
peak detector and the min peak detector simultaneously determine the
maximum and the minimum level within a displayed testpoint and
display it as a single measured value. The maximum and minimum
levels within a frequency point are connected by a vertical line.