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7
Chapter 3 Installation
The Model 4391A RF Power Analyst is completely portable
and very suitable for field or laboratory use. Its power is
derived from rechargeable nickel metal hydride batteries
inside the unit or from an AC outlet via the power cord
supplied with the device.
The batteries are shipped in a low charge state. It is,
therefore, recommended that you charge the instrument for
16 hours before using it for continuous operation.
Operating on
AC Power
For ac power operation, the Model 4391A is simply
connected to an AC receptacle using the line cord provided.
The correct AC voltage is selected via a rear panel switch
(Figure 5). The meter may be operated in this manner with
the batteries removed if desired.
CAUTION
Long-term storage of this instrument can affect battery
performance and reduce battery life. Do not store the
instrument for long periods of time without recharging the
batteries (refer to page 19). Failure to comply may result
in reduced battery charge and shortened battery life.
CAUTION
Always be certain the 115/230 voltage selector is set to the
proper voltage before ac power is applied.
Figure 5
Rear Panel
Item No. Description
1 AC input voltage selector switch
2Fuse holder
3 AC power cable connector