VOLTCRAFT DSO-2202H + AFG Quick Manual page 5

 Only voltage probes and test wires with proper insulation attached to the
oscilloscope or accessories suitable for oscilloscope instrument products
specified by our company shall be used.
 Before use, check the multimeter test probe, oscilloscope probe and
accessories for mechanical damage. If damage available, replace it.
 Remove all unused multimeter test probes, oscilloscope probes and
accessories (power adapter, USB, etc.).
 Firstly, plug the power adapter into the AC socket, and then connect it to
the oscilloscope.
 When testing in a CAT II environment, do not connect a voltage higher
than 400 V to any input port.
 When testing in a CAT II environment, do not connect a voltage with a
voltage difference of more than 400 V to the isolated input port.
 Do not use an input voltage higher than the rated value of the instrument.
Pay special attention when using 1:1 test wires, because the probe voltage
will be directly transmitted to the oscilloscope.
 Do not touch the bare metal BNC or banana plug.
 Do not insert metal objects into the connector.
 Use the oscilloscope only in the specified way.
 The voltage rating mentioned in the "warning" information is the limited
value of "working voltage". They represent V ac rms (50-60 Hz) in AC sine
wave applications; and V dc in DC applications. CAT is the prefix, and II
refers to the level. Level II is the low voltage and high energy level, which
refers to the local electrical level applicable to electrical appliances and
portable equipment.
 O n ly a q u a lifie d p e rs o n s h o u ld p e rfo rm in te rn a l m a in te n a n ce .
 C h e c k a ll Term in a l R a tin g s . To avoid fire or shock hazard, check all
ratings and markings on this product. Refer to the user manual for more
information about ratings before connecting to the instrument.
 D o n o t o p e ra te w ith o u t c o ve rs. Do not operate the instrument with
covers or panels removed.
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