3 IQ Analyzer (Basic) Mode
3.4 Fast (Deep) Capture
3.4.2 Fast Capture Word Length
Specifies the internal fast capture word length. Shorter word length enables twice
the time length to be captured, at the cost of quantization noise. Note that this does
not affect the format of data returned by :FETCh:FCAPture, only the internal
representation.
Remote Command
[:SENSe]:FCAPture:WLENgth AUTO | BIT32 | BIT64
[:SENSe]:FCAPture:WLENgth?
Example
:FCAP:WLEN AUTO
:FCAP:WLEN?
Preset
AUTO
3.4.3 Initiate Fast Capture
Waits for the sweep to trigger, then captures the fast capture data. Sweep mode is
then set to Pause. The amount of data captured is controlled by "Fast Capture
Length" on page 423 (:FCAP:LENG).
Remote
Command
:INITiate:FCAPture
Example
:INIT:FCAP
Notes This is an overlapped command. It returns immediately, but the capture may not be complete. Use
*OPC?, *WAI, or *OPC to determine when the capture is complete
Resets the Fast Capture Pointer to 0
3.4.4 Fast Capture Block
Sets the block size for the Fast Capture transfer in samples (points). This is the
number of points that are returned from the Capture buffer by "Fetch Fast Capture"
on page 425 (:FETC:FCAP?). This is constrained to be an even number.
The query returns the most recent block size setting.
Remote
Command
[:SENSe]:FCAPture:BLOCk <integer>
[:SENSe]:FCAPture:BLOCk?
Example
:FCAP:BLOC 100
:FCAP:BLOC?
Preset 1024 Samples
Min 0
IQ Analyzer Mode User's &Programmer's Reference 424
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