Configuration
R&S
®
FSWP
60User Manual 1177.5856.02 ─ 07
"80 MHz"
Restricts the analysis bandwidth to a maximum of 80 MHz.
"160 MHz"
Restricts the analysis bandwidth to a maximum of 160 MHz. The
bandwidth extension option for 320 MHz is disabled.
Remote command:
TRACe:IQ:WBANd[:STATe] on page 136
TRACe:IQ:WBANd:MBWidth on page 135
200 MHz Filter
Activates a 200 MHz filter before the A/D converter, thus restricting the processed
bandwidth to 200 MHz while using the wideband processing path in the R&S FSWP.
This is useful for signals that have a bandwidth of approximately 200 MHz (for example
Docsis 3.1). In this case, the R&S FSWP can optimize signal processing for the rele-
vant signal and filter out unwanted signal parts from adjacent channels, while taking
advantage of a higher sample rate.
If you simply reduce the specified Analysis Bandwidth , the sample rate, which is cou-
pled, is also reduced.
This function is only available under the following conditions:
●
Bandwidth extension R&S FSWP-B320 (this option provides a separate wideband
processing path in the R&S FSWP)
●
An I/Q bandwidth higher than 80 MHz is used (only in this case the wideband path
is used)
If the filter is active, "200 MHz" is indicated in the channel information bar.
Remote command:
TRACe:IQ:WFILter on page 136
Meas Time
Defines the I/Q acquisition time. By default, the measurement time is calculated as the
number of I/Q samples ( "Record Length" ) divided by the sample rate. If you change
the measurement time, the Record Length is automatically changed, as well.
For details on the maximum number of samples see also Chapter 4.1.1, "Sample Rate
and Maximum Usable I/Q Bandwidth for RF Input", on page 21.
Remote command:
[SENSe<n>:]SWEep:TIME on page 94
Record Length
Defines the number of I/Q samples to record. By default, the number of measurement
points is used. The record length is calculated as the measurement time multiplied by
the sample rate. If you change the record length, the Meas Time is automatically
changed, as well.
Note: For the I/Q vector result display, the number of I/Q samples to record ( "Record
Length" ) must be identical to the number of trace points to be displayed ("Sweep
Points"). Thus, the measurement points are not editable for this result display. If the
"Record Length" is edited, the measurement points are adapted automatically.
For record lengths outside the valid range of measurement points, i.e. fewer than 101
points or more than 100001 points, the diagram does not show valid results.
Data Acquisition and Bandwidth Settings
To Next Page
Loading...
