Remote Commands to Perform Measurements with I/Q Data
R&S
®
ZNL
207
User Manual 1178.5989.02 ─ 06
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
9.8.2
Retrieving I/Q Trace Data
In addition to the raw captured I/Q data, the results from I/Q analysis as shown in the
result displays can also be retrieved.
.......................................................................................... 210
FORMat[:DATA]
<Format>[, <BitLength>]
This command selects the data format that is used for transmission of trace data from
the R&S
ZNL to the controlling computer.
Retrieving Results
