Power Line Noise; Telephone - HP 64000 Reference Manual

SYSTEM ()VERVIFW MANlJAL
MODEL 64000
Power Line Noise
Power from a typical ac power line is inherently noisy, and fluctuations can be caused
by:
a. utility power company switching
b. ci rcu it breakers tri pping
c. air conditioning equipment
d. electrical welders
e. elevators
f. copying machines
g. start-up of large electric motors.
Even though you cannot control or prevent disruptions from the first two items, remember to
avoid connecting Model 64000 components on the same circuit breaker with any of the other
named equipment.
Telepnone
A telephone should be located near the system so that a customer or CE can discuss a
servicing problem while working on the unit.
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