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Automatic Phase
Calibration
REF. OUT
5-16
Parameters
Two HP 3324As can be phase calibrated such that
changing the phase of one instrument will alter it in
respect to the other. To be able to do this it is necessary
to have one of the HP 3324As installed with option 003
(slave), and the other with option 004 (master). If one of
the instruments has option 001, High-Stability Frequency
Reference, installed then the 10 MHz Oven Output
should be connected to the External Reference Inputs
of both instruments. Otherwise, the 1 MHz Reference
Output of one of the instruments must be connected
to the External Reference Input of the other. In both
cases the Phase Cal Out of one must be connected to the
Phase Cal In of the other and vice versa. Figure 5-3
shows an example of the second method.
MASTER OUTPUT H/S PHASE REFERENCE
Figure 5-3. Automatic Phase Calibration Setup
Pressing the (PhaseCal) key on the slave (the one with
option 003 installed) will cause a phase calibration
between the two instruments to be performed. "phase
before displaying what was previously shown. The
master instrument shows "phase master". Only the rear
main output signal of each instrument are calibrated.
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