Getting Started
TDS3000B Serie s User Manual
1-13
Operating Safely with Battery Power
WARNING. To avoid el ec tric shock, conne ct the rear-panel ground
terminal to earth ground when operating the instrument from bat tery
power.
For safe operation, the oscilloscope chassis should always remain at
earth ground potential. Without a connection between t he chassis and
earth ground, you can receive a shock from exposed metal on the
chassis if you connect an input to a hazardous voltage (>30 V
RMS
,
>42 V
pk
). Protection against this condition is provided when you
attach the Tektronix-supplied groundi ng wire from the terminal on
the rear pa nel to earth ground. If you use a different grounding wire,
it must be at least 18 gauge.
If you choose not to attach the grounding wire, you are not protected
against electric shock if you connect the oscilloscope to a hazardous
voltage. You can still use the oscilloscope if you do not connect a
signal greater than 30 V
RMS
(42 V
pk
) to the probe tip, the BNC
connector center, or the common lead. E nsure tha t a ll probe common
leads are c onnec ted to the same volt age. Also, do not connect a
grounded devi ce , such as a printer or computer, to the oscilloscope.
WARNING. Hazardous voltages may exist in une xpe cted places due to
faulty circuitry in the devic e under test.
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