OWON HDS1021M - Manual (Page 11)

OWON HDS1021M Handheld DSO & DMM 2-Safety Information
adapter appointed by the manufacturer and subject to approval of being used in the user’s
country.
Warning:
The two channels of the oscilloscope are non-isolated electrically. The channels should adopt
common basis during measuring. To prevent short circuits, the 2 probe ground must not be
connected to 2 different non-isolated DC level.
Warning:
The channels should adopt common basis during measuring. To prevent short circuits, the 2
probe ground must not be connected to 2 different non-isolated DC level. The diagram of the
oscilloscope ground wire connection:
It is not allowed to measure AC power when charging the oscilloscope with adapter.
Warning:
To avoid fire or electrical shock if a test tool input is connected to more 42V peak (30Vrms)
or on circuits of more than 4800VA:
● Use only insulated voltage probes, test leads and adapter supplied with the test tool, or
indicated by OWON as suitable for the Oscilloscope & Multimeter.
● Before use, inspect voltage probes, test leads and accessories for mechanical damage and
replace when damaged.
● Remove all probes, test leads and accessories that are not in use.
● Always connect the power adapter first to the AC outlet before connecting it to the
Oscilloscope & Multimeter.
● Do not apply voltages that differ more than 400 V from earth ground to any input when
measuring in a CAT Ⅱ environment.
● Do not apply voltages that differ more than 400 V from each other to the isolated inputs
when measuring in a CAT Ⅱ environment.
● Do not apply input voltages above the rating of the instrument Use caution when using
1:1 test leads because the probe tip voltage will be directly transmitted to the
Oscilloscope & Multimeter.
● Do not use exposed metal BNC or banana plug connectors.
● Do not insert metal objects into connectors.
● Always use the Oscilloscope & Multimeter only in the manner specified.
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