Using The Instrument 3-32
The sample clock rate has no effect on phase offset accuracy.
However, when trying to synchronize modules that are programmed
to output waveforms with few memory points, a ±1 count error
between modules may be seen. To remove this error, use the
following command:
PHASe[1]:LOCK:NULL
CAUTION
The PHASe:NULL command toggles between removing one
count and adding one count. Therefore, if there was no
error, sending this command may add a 1 count error.
The query:
PHASe[1]:LOCK?
queries the Phase Lock mode and returns "0" (OFF) or "1" (ON).
The query:
PHASe[1]:ADJust?
queries the phase offset and returns a value in degrees.
In query:
PHASe[1]:SOUR?
queries the phase lock source and returns MAST or SLAV.
Front-Panel Phase
Synchronization
The Model 3152 can phase lock to an external reference which is
applied to the trigger input. The locking process is done
automatically by the generator. There is no need for the user to
initiate or set the generator’s lock-in range for this mode. A front-
panel LED illuminates when the reference signal is valid and the
Model 3152 locks on the external signal. After lock has been
achieved, you may shift the phase between the reference and the
generator from -180
E
to +180
E
.
Содержание 3152
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