Bird Technologies 4391A - Manual (Page 4)

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Caution Statements
The following equipment cautions appear in the text and are repeated here for
emphasis.
On pages 7 and 16.
On page 7.
On page 9.
On page 9.
On page 20.
On page 22.
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 18). 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.
CAUTION
Never apply RF power to the Model 4391A Wattmeter unless both line section
sockets are filled with either an element or a dust plug. If an element is used it is
advisable to place the element with the arrow at a 90° angle to the coaxial line.
CAUTION
Always disconnect AC power before opening the Model 4391 enclosure.
Removal of at least one battery cell is also recommended when servicing the
instrument.
CAUTION
If the element cannot be fully inserted into the socket, do not force it. You
might damage the element.
CAUTION
This instrument contains static sensitive electronic components. Before
opening or servicing the unit, make sure that you understand and practice
electrostatic discharge component handling. Failure to comply may result in
permanent damage to sensitive components.