Rohde & Schwarz PR100 - Page 279

R&S PR100 User Manual
Table 37: PScan Data Types
Terminal C Data Type Remarks
<PSCAN start frequency
low>
unsigned long Lower 32 bits of output of
“SENS:FREQ:STAR?” in Hz
<PSCAN stop frequency
low>
unsigned long Lower 32 bits of output of
“SENS:FREQ:STOP?” in Hz
<PSCAN step
frequency>
unsigned long Output of
“SENS:FREQ:STEP:INCR?” in
Hz
<PSCAN start frequency
high>
unsigned long Higher 32 bits of output of
“SENS:FREQ:STAR?” in Hz
<PSCAN stop frequency
high>
unsigned long Higher 32 bits of output of
“SENS:FREQ:STOP?” in Hz
<PSCAN fft level> (x
time)
short Level (n) in dBuV
<PSCAN frequency
low> (x time)
unsigned long Lower 32 bits of the frequency
of level (n)
<PSCAN frequency
high> (x time)
unsigned long higher 32 bits of the frequency
of level (n)
x = the FFT length. This depends on the RBW.
n = sample number. 0 <= n < FFT length
The start and stop frequency stored in the option header are the start and stop
frequency the user has configured for PSCAN. The first sample of the PSCAN
stream will be the level at the start frequency. Since it is possible to configure
a stop frequency which is not a multiple of the PSCAN RBW, the last sample
is not measured at the PSCAN stop frequency. The PR100 will round off the
PSCAN nrOfSamples to + 1 if the span is not a multiple of the PSCAN RBW.
For the PR100 PSCAN stream client knows the frequency of a level by:
Assuming the scan direction is RUN(+)
1) Use the trace selector flag FREQ_LOW and FREQ_HIGH.
2) If the trace selector flag FREQ_LOW and FREQ_HIGH are not used
by:
RBWnstartfnlevelf

+
=
)()(
where:
n
= PSCAN sample number, starting from 0 at the PSCAN start
frequency.
)(startf = PSCAN start frequency,
RBW = “RF Panorama Scan Resolution BW”