HP 3478A Technical Manual page 3

SAFETY SUMMARY SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service, and repair of The following general safety precautions must be observed during all phases of operation, service, and repair of
this instrument Failure to comply with those precautions or with specific warnings elsewhere in this manual this instrument Failure to comply with those precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended use of the instrument Hewlett Packard Company violates safety standards of design, manufacture, and intended use of the instrument Hewlett Packard Company
assumes no liability for the customer's failure to comply with these requirements. This is a Safety Class 1 assumes no liability for the customer's failure to comply with these requirements. This is a Safety Class 1
instrument instrument
GROUND THE INSTRUMENT GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument
is equipped with a three-conductor ac power cable. The power cable must either be plugged into an approved three- is equipped with a three-conductor ac power cable. The power cable must either be plugged into an approved three-
contact electrical outlet or used with a three-contact to two-contact adapter with the grounding wire (green) firmly contact electrical outlet or used with a three-contact to two-contact adapter with the grounding wire (green) firmly
connected to an electrical ground (safety ground) at the power outlet. The power jack and mating plug of the connected to an electrical ground (safety ground) at the power outlet. The power jack and mating plug of the
power cable meet International Electrotechnical Commission (IEC) safety standards. power cable meet International Electrotechnical Commission (IEC) safety standards.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or fumes. Operation of Do not operate the instrument in the presence of flammable gases
an environment constitutes a definite safety hazard. an environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be
made by qualified maintenance personnel. Do not replace components with power cable connected. Under certain made by qualified maintenance personnel. Do not replace components with power cable connected. Under certain
conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power
and discharge circuits before touching them. and discharge circuits before touching them.
DO NOT SERVICE OR ADJUST ALONE DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is
present. present.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized
modification to the instrument. Return the instrument to a Hewlett- Packard Sales and Service Office modification to the instrument. Return the instrument to a
to ensure that safety features are maintained. to ensure that safety features are maintained.
DANGEROUS PROCEDURE WARNINGS DANGEROUS PROCEDURE WARNINGS
Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions
contained in the warnings must be followed. contained in the warnings must be followed.
Dangerous voltages, capable of causing death, are present in this instrument Us ex- Dangerous voltages, capable of causing death, are present in this
treme caution when handling, testing, and adjusting. treme caution when handling, testing, and adjusting.
hp-HEWLETT hp-HEWLETT
PACKARD PACKARD
or fumes. Operation of any electrical instrument in such
Hewlett- Packard Sales and Service Office for service and repair
B B
TM 11-6625-3071-14 TM 11-6625-3071-14
any electrical instrument in such
for service and repair
instrument Us ex-