1. INTRODUCTION page 3
Model PRM-470B
1.3. SAFETY PRECAUTIONS
Cautions and warnings related to specific procedures are cited at appropriate places in this
manual. A summary is given here.
WARNINGS:
Since the PRM-470B uses high voltage during operation, care must be taken during service
procedures. Service should be done only by qualified personnel.
The electroluminescent backlight utilizes 400 volts ac for operation, and care must be taken to
avoid accidental contact while servicing the instrument.
CAUTIONS:
The PRM-470B is water resistant, but will not withstand immersion in water.
The instrument should not be overcharged, as this will shorten the battery life. The instrument
should not be constantly shallow charged refer to Maintenance Procedures (section 5.1.).
As with any sensitive electronic instrument, the PRM-470B should not be dropped or subjected
to severe mechanical shock.
Damage to the copper coating inside the instrument can result in unacceptable RFI levels.
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