pico Technology PicoScope 4225A Guía De Seguridad página 52

Safety Guide
If a signal voltage exceeding the selected full-scale measurement range is detected, it is indicated
on the measurement display. A red warning icon will appear in the upper left corner and next to the
relevant channel's vertical axis.
Similarly, if the selected maximum common mode voltage is exceeded, a yellow warning icon will
appear in the upper left corner of the display and next to the relevant channel's vertical axis. In
these conditions, displayed waveforms and measurements may be incorrect and the condition
may be hazardous.
Select a larger voltage range to achieve a within-range measurement and if the condition persists,
to prevent injury or death, disable or otherwise safely disconnect from the source of overvoltage.
ACCESSORIES
Do not exceed the voltage rating marked on any accessory. If an accessory is not marked with a
voltage rating on either the connector, cable or body, or if a protective finger guard is removed, do
not exceed the safe voltage limits listed above.
Never exceed the maximum voltage marked on a CAT-rated accessory, whether or not the
accessory is being used for mains or high-energy measurements.
When connecting one or multiple accessories and an instrument channel together, the lowest
voltage rating in an interconnected set of accessories applies to that channel.
To avoid causing permanent damage to the instrument and other connected equipment, do not
exceed the voltage protection range on any cable, connector or accessory.
Uninsulated HT pickups are designed to clip around double-insulated HT leads only – they are
not designed for direct connection to a hazardous live voltage. To prevent injury or death, switch
off the engine and secure against restart. Clean and inspect the HT lead for damage to insulation
and fit only to undamaged double-insulated leads. Ensure that test leads are safely clear of hot or
rotating parts. You can now restart the engine for the test duration.
Pico accessories for measuring physical properties such as resistance, pressure, temperature and
ultrasonic signals are not designed to be connected to any voltage source.
To prevent fire, burning or possible damage, do not connect any temperature, ultrasonic,
resistance or pressure sensors to an electrical node unless you have first confirmed that the node
is de-energized.
DO336-1
PicoScope 4225A and 4425A automotive oscilloscope and accessories
WARNING
WARNING
CAUTION
WARNING
CAUTION
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