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PicoScope 4225A and 4425A automotive oscilloscopes and accessories
This product is for professional use by trained and qualified technicians only.
To prevent injury or death use the product only as instructed and use only accessories supplied or
recommended by Pico Technology. Protection provided by the product may be impaired if used in
a manner not specified by the manufacturer.
MAXIMUM TERMINAL RATINGS
Observe all terminal ratings and warnings marked on the product. The marked voltage is the
maximum that may be applied across that terminal without risk of personal injury or damage to
the instrument.
The maximum common-mode voltage is the maximum that can be present between the floating
ground of the measurement input and the USB connector ground to achieve a valid measurement.
To prevent electric shock, do not attempt to connect to or measure voltages outside of the
maximum terminal rating or with an applied common mode voltage that is outside specification.
Signals exceeding the voltage limits in the table below are defined as "hazardous live" by
EN 61010.
±60 V DC
The PicoScope 4225A and 4425A can measure hazardous live voltages up to the maximum full-
scale measurement voltage of ±200 V DC.
Accessories suited for use with, or connection to, higher voltages are all clearly marked with their
maximum allowable voltage and, where applicable, their CAT rating.
To prevent electric shock, take all necessary safety precautions when working on equipment
where hazardous live voltages may be present.
To prevent injury or death, do not directly connect the oscilloscope to the utility power (line power)
or a vehicle traction battery pack and associated power converters. To measure these voltages,
use only a differential isolating probe that is specifically CAT-rated to the appropriate level for
utility power or high-energy use, such as those listed on the Pico website.
Always follow relevant industry standard safety procedures and use appropriate Personal
Protective Equipment (PPE) where applicable. Safety training is recommended in these cases and
should be separately gained.
Do not use attenuators with a direct ground-to-ground connection, such as the Pico TA010 and
TA197 attenuators, for measuring hazardous voltages such as utility power or those of a vehicle
traction battery pack.
To prevent injury or death, do not use the scope or accessories if they appear to be damaged in
any way, and stop use immediately if you are concerned by any abnormal operations.
2
WARNING
WARNING
Safe voltage limits of EN 61010
30 V AC RMS
WARNING
WARNING
Safety Guide
±42.4 V pk max.
DO336-4
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