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SAFETY PRECAUTIONS
The following
safety precautions
should be observed before using the Model 194.
This instrument
is intended
for use by qualified
personnel
who recognize shock hazards and arc famili.lr
with the safety precautions required to avoid possible injury. Read over this manual carefully before operating
the instrument.
Exercise extreme caution when a shock hazard is present at the instrument's
input. The American National
Standards Institute
(ANSI) states that a shock hazard exists when voltage levels greater than 3OV RMS 01
42.4V peak are present. A good safety practice is to expect that a hazardous voltage is present in any unknown
circuit
before measurement.
Do not exceed 3OV RMS between input low and earth ground.
Inspect your test leads for possible wear, cracks, or breaks before coach use.
For maximum safety, do not touch the test leads or the instrument
while power is applied to the circuit undrr
test. Turn the power off and discharge all capacitors before connecting
or disconnecting
the instrument.
Do not touch any object which could provide a current path to the common side of thr circuit under test
or power line (earth) ground. Always make measurements with dry hands while standing on '1 dry, insulated
surface capable of withstanding
the voltage being measured.
Do not exceed the instrument's
maximum
allowable input as defined in the specifications
and operation
section of this manual.
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