pico Technology PicoScope 4225A Guía De Seguridad página 55

PicoScope 4225A and 4425A automotive oscilloscope and accessories
GROUNDING THE INSTRUMENT AND ITS ACCESSORIES
The oscilloscope's ground connection through the USB cable is for measurement purposes only. It
does not have a protective safety ground.
Never connect the ground input (chassis) to any electrical power source. To prevent personal
injury or death, use a voltmeter to check that there is no significant AC or DC voltage between the
oscilloscope ground and the point to which you intend to connect it.
Pico resistance-measuring accessories have a black ground terminal. This connects directly to the
scope chassis and USB ground. As above, do not connect this to any electrical power source.
Applying a voltage to the ground input is likely to cause permanent damage to the oscilloscope,
the attached computer and other equipment.
To prevent measurement errors caused by poor grounding, always use the high-quality blue USB
cable supplied with the oscilloscope.
Note: The oscilloscope is powered through the USB connector. No additional power supply unit is
required.
Note: Maximum power requirement from the 5 V USB supply is 7.5 W.
To prevent injury or death and to avoid potential damage to the oscilloscope, only connect the
unit's USB connector to a certified non-hazardous PC USB output socket that has previously been
approved to an appropriate standard.
ENVIRONMENT
To prevent injury or death, do not use in wet or damp conditions, or near explosive gas or vapor.
To prevent damage, always use and store your oscilloscope in appropriate environments.
Temperature
Humidity (non-condensing)
Altitude
Pollution degree
CARE OF THE OSCILLOSCOPE AND ACCESSORIES
The product and accessories contain no user-serviceable parts. Repair, servicing and adjustment
require specialized test equipment and must only be performed by Pico Technology or an
approved service provider. There may be a charge for these services unless covered by the Pico
warranty.
Inspect the instrument and all probes, connectors, cables and accessories before use for signs of
damage.
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WARNING
CAUTION
CAUTION
WARNING
WARNING
CAUTION
Storage
–20 to +60 °C
5% to 90% RH
Up to 15 000 m
Operation
0 to 45 °C
5% to 80% RH
Up to 2000 m
2
Safety Guide
Quoted accuracy
15 to 30 °C
DO336-1