Rohde & Schwarz R&S FSL3 - Page 1034

R&S FSL TRACe Subsystem
1300.2519.12 6.275 E-11
Example
TRAC:IQ:STAT ON
Enables acquisition of I/Q data
TRAC:IQ:SET NORM,10MHz,32MHz,EXT,POS,100,4096
To configure the measurement:
Sample Rate: 32 MHz
Trigger Source: External
Slope: Positive
Pretrigger Samples: 100
# of Samples: 4096
INIT;*WAI
Starts measurement and wait for sync
FORMat REAL,32
Determines output format
To read the results:
TRAC:IQ:DATA:MEM? 0,2048
Reads 2048 I/Q data starting at the beginning of data acquisition
TRAC:IQ:DATA:MEM? 2048,1024
Reads 1024 I/Q data from half of the recorded data
TRAC:IQ:DATA:MEM? 100,512
Reads 512 I/Q data starting at the trigger point (<Pretrigger Samples> was 100)
Characteristics
*RST value: –
SCPI: device–specific
Mode
A–T, WLAN, OFDM, OFDMA/WiBro
TRACe<1|2>:IQ:SET
This command defines the settings of the analyzer hardware for the measurement of I/Q data.
This allows setting the bandwidth of the analog filters in front of the A/D converter as well as
setting the sample rate, trigger conditions and the record length.
Note: If this command is omitted, the current analyzer settings will be used for the
corresponding parameters.
This command switches to IQ mode automatically (see also
TRACe<1|2>:IQ[:STATe]).
The parameter <filter_type> has no effect but is indicated for reasons of compatibility
with the FSP family.
The trigger level can be set using the TRIGger<1|2>[:SEQuence]:LEVel:IFPower
command.
Parameter
<filter type> can be omitted
<rbw> can be omitted
<sample rate> Sampling rate for the data acquisition.
Value range: 10 kHz to
MHz365.8 , continuously adjustable
<trigger mode> Selection of the trigger source used for the measurement.
Values: IMMediate | EXTernal | IFPower