Tektronix DSA8300, Руководство программиста

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Command Groups
Phase Reference Command Group
You use the commands in the Phase Reference Command Group to switch to
the Phase Correction timebase. This timebase supports ultra-low trigger jitter
(<100 fs RMS typical for 82A04B; 200 fsec RMS typical for 82A04), improving
the
fi delity of acquired signals.
The 82A04 and 82A04B modules are available in two con fi gurations: standard
and with Option 60G.
You can fi nd phase reference information by clicking the Help button in the Phase
Ref Setup dialog box
Command Description
PHAseref:CHAR Initiates a Phase Reference Characterization
PHAseref:CH<x>:ESTAmplitude? Returns the estimated amplitude (p-p) of the
phase reference clock signal
PHAseref:CH<x>:ESTFrequency? Returns the estimated frequency of the
phase reference clock signal
PHAseref:CH<x>:ESTQuality? Returns the estimated quality of the phase
reference clock signal
PHAseref:CH<x>:FREQuency Sets or returns the Phase Reference
Frequency
PHAseref:CH<x>:RANge? Returns the Phase Reference module
guaranteed frequency range
PHAseref:CH<x>:STAtus? Returns the current Phase Reference
Characterization status
PHAseref:MODe Sets or queries the Phase Correction Mode:
OFF, FREerun, TRIGger, SSCTrigger, or
UNTRigger
PHAseref:SOUrce Sets or returns the Phase Reference source:
C1 & C2, C3 & C4, C5 & C6, or C7 & C8
Save and Recall Command Group
You use the commands in the Save and Recall Command Group to store and
retrieve internal waveforms and settings. When you save a setup, you save all the
settings of the instrument. When you recall a saved setting, the instrument restores
itself to the state that it was in when you originally saved that setting.
Command Description
DELEte:WAVEform Deletes (one or all) of the stored reference
waveforms from memory
FACtory Resets the instrument to factory default
settings
2-30 DSA8300 Programmer Manual