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a. Press UPPER LIMIT or LOWER LIMIT, as
desired, and enter new limit.
b. Press Ethen Pone or more times to
return to previous menus.
6. To limit current (applies to both dc and ac
currents), press the softkey under CURRENT.
oe76f.eps
a. Press “Upper Limit” or “Lower Limit”, as
desired, and enter the new limit.
b. Press Ethen Pone or more times to
return to previous menus.
Synchronizing the Calibrator using 10 MHz
IN/OUT
You can synchronize one or more 5520A
Calibrators using the 10 MHz IN and OUT
input/output on the rear panel. Example
applications of this capability are connecting two
or more Calibrators in parallel in the current output
function to sum their outputs, or using three
Calibrators to calibrate a three-phase power
meter.
Another use for the 10 MHz IN reference input is
to improve the frequency performance of the
5520A by injecting a reference 10 MHz clock
signal. That application is described next.