TRACe Subsystem R&S FSL
1300.2519.12 6.266 E-11
Fig. 6–2 Signal processing in models with WDDC motherboards
The trigger sources EXT (external trigger) and IFP (IF Power Trigger) can be used for triggering,
additionally IMM (Free Run). The number of complex sample to be recorded prior to the trigger event
can be selected (TRACe<1|2>:IQ:SET command) for all available trigger sources, except for FREE
RUN.
The measurement results are output in the form of a list, with the Q values following immediately after
the list of I values in the output buffer. The FORMAT command can be used to select between binary
output (32 bit IEEE 754 floating–point values) and output in ASCII format.
For details on formats refer to "Formats for returned values: ASCII format and binary format" on page
6.300.
The commands of this subsystem can be used in two ways:
• Measurement and result query with one command:
This method causes the least delay between measurement and output of the result data, but it
requires the control computer to wait actively for the response data.
• Setting up the instrument, start of the measurement via INIT and query of the result list at the end
of the measurement:
With this method the control computer can be used for other activities during the measurement. In
this case the additional time needed for synchronization via service request must be taken into
account.
Commands of the TRACe:IQ Subsystem
– TRACe<1|2>:IQ[:STATe]
– TRACe<1|2>:IQ:AVERage[:STATe]
– TRACe<1|2>:IQ:AVERage:COUNt
– TRACe<1|2>:IQ:DATA?
– TRACe<1|2>:IQ:DATA:MEMory?
– TRACe<1|2>:IQ:SET
– TRACe<1|2>:IQ:SRATe
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