Remote commands to perform measurements in MSRA mode
R&S
®
FSWP-B1
111
User Manual 1177.5862.02 ─ 09
Return values:
<IQData>
Measured value pair (I,Q) for each sample that has been recor-
ded.
By default, the first half of the list contains the I values, the sec-
ond half the Q values. The order can be configured using
The data format of the individual values depends on
Default unit: V
Example:
TRAC:IQ:STAT ON
Enables acquisition of I/Q data
TRAC:IQ:SET NORM,10MHz,32MHz,EXT,POS,100,4096
Measurement configuration:
Sample Rate = 32 MHz
Trigger Source = External
Trigger Slope = Positive
Pretrigger Samples = 100
Number 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?
Reads all 4096 I/Q data
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)
Example:
// Perform a single I/Q capture.
INIT;*WAI
// Determine output format (binary float32)
FORMat REAL,32
// Read 1024 I/Q samples starting at sample 2048.
TRAC:IQ:DATA:MEM? 2048,1024
Usage:
Query only
9.7
Querying the status registers
The R&S
FSWP-I/Q Analyzer uses the standard status registers of the R&S
FSWP.
The MSRA operating mode uses an additional bit in the
STATus:OPERation
register.
This register and the commands required to query its contents are described here.
Querying the status registers