OPERATION MANUAL
NAV-402AP-3
SAFETY FIRST: TO ALL OPERATIONS PERSONNEL
REFER ALL SERVICING OF UNIT TO QUALIFIED TECHNICAL PERSONNEL. THIS UNIT CONTAINS NO
OPERATOR SERVICEABLE PARTS.
WARNING: USING THIS EQUIPMENT IN A MANNER OTHER THAN SPECIFIED BY THE ACCOMPANYING
DOCUMENTATION MAY IMPAIR THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT.
CASE, COVER OR PANEL REMOVAL
Removing the Chassis Assembly from the Case Assembly exposes the operator to electrical hazards that
can result in electrical shock or equipment damage. Operate Test Set only with the Chassis Assembly
installed in the Case Assembly.
SAFETY IDENTIFICATION IN TECHNICAL MANUAL
This manual uses the following terms to draw attention to possible safety hazards, that may exist when
operating this equipment.
CAUTION: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
EQUIPMENT OR PROPERTY DAMAGE (E.G., FIRE).
WARNING: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
PERSONAL INJURY OR DEATH.
SAFETY SYMBOLS IN MANUALS AND ON UNITS
CAUTION: Refer to accompanying documents. (This symbol refers to specific CAUTIONS represented on
the unit and clarified in the text.)
AC OR DC TERMINAL: Terminal that may supply or be supplied with ac or dc voltage.
DC TERMINAL: Terminal that may supply or be supplied with dc voltage.
AC TERMINAL: Terminal that may supply or be supplied with ac or alternating voltage.
EQUIPMENT GROUNDING PRECAUTION
Improper grounding of equipment can result in electrical shock.
USE OF PROBES
Check the specifications for the maximum voltage, current and power ratings of any connector on the Test
Set before connecting it with a probe from a terminal device. Be sure the terminal device performs within
these specifications before using it for measurement, to prevent electrical shock or damage to the
equipment.
POWER CORDS
Avoid using power cords which are frayed, broken or expose bare wiring when operating this equipment.
USE RECOMMENDED FUSES ONLY
Use only fuses specifically recommended for the equipment at the specified current and voltage ratings.
INTERNAL BATTERY
This unit contains a Nickel Cadmium Battery, serviceable only by a qualified technician.
CAUTION: MODE GENERATORS CAN BE A SOURCE OF ELECTROMAGNETIC INTERFERENCE (EMI) TO
COMMUNICATION RECEIVERS. SOME TRANSMITTED SIGNALS CAN CAUSE DISRUPTION
AND INTERFERENCE TO COMMUNICATION SERVICES OUT TO A DISTANCE OF SEVERAL
MILES. USERS OF THIS EQUIPMENT SHOULD SCRUTINIZE ANY OPERATION THAT RESULTS
IN RADIATION OF A MODE (DIRECTLY OR INDIRECTLY) AND SHOULD TAKE NECESSARY
PRECAUTIONS TO AVOID POTENTIAL COMMUNICATION INTERFERENCE PROBLEMS.
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General