R&S PR100 User Manual
Table 33: IFPan Data Types
Terminal C Data Type Remarks
<IFPan frequency low> unsigned long Lower 32 bit of center of IFPan
span (“SENS:FREQ:CW?”) in
Hz
<IFPan span
frequency>
unsigned long Output of
“SENS:FREQ:SPAN?” in Hz
<IFPan reserved> Short Always 0; this field is not used
<IFPan average type> Short Always set to OFF (3),
regardless of the output of
“CALC:IFP:AVER:TYPE?”.
<IFPan measure time> unsigned long Output of “MEAS:TIME?” in Vs.
0 Vs is used for DEFault.
<IFPan frequency high> unsigned long Upper 32 bit of center of IFPan
span (“SENS:FREQ:CW?”) in
Hz
12.7 IF
The IF stream contains source IQ data. Although the Audio stream can also
contain data in IQ form, it is not the same as this stream. This stream is the
source for the audio demodulation: The Audio IQ is obtained by processing
this stream. For the IF stream, the data rate can be very high: 640
kSamples/second (Req. SFD0248). It has 2 channels and 16 bit per sample.
At the maximum sample rate of 640k per second, the total data-rate is 2.56
MByte/s.
The only applicable selector flag is “OPTIONAL_HEADER”. All other flags
have no influence on the format of the IF stream. Data is always sent with the
SWAP flag set, independent of whether the SWAP flag has been configured
for this stream or not.
Data are output when no PSCAN/FSCAN/MSCAN is running, and additionally
also during the HOLD state in a running FSCAN/MSCAN.
Table 34: IF Format: <optional header> and <trace data>
32-bit aligned 8-bit aligned 16-bit aligned 8-bit aligned
IF mode IF frame length
IF sample rate
IF frequency low (4 bytes)
IF bandwidth
IF demodulation id IF RX attenuation
IF flags IF reserved (2 bytes)
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