2
Prevention of fire or injury:
• Use only the designated AC adapter and test leads
supplied with the instrument.
• Observe all ratings and markings of the instrument
before connecting to the instrument.
• When performing measurement, ensure that the
right safety and performance ratings of instrument
and accessories are used.
• Connect the scope probe or test leads to
instrument before connecting to any active circuit
for testing. Before disconnecting the active circuit
from instrument, remove scope probe or test leads
from active circuit.
• Do not connect the ground wire to voltages higher
than 42 Vpeak (30 Vrms) from earth ground.
Maximum Input Voltages
Maximum Floating Voltage
• From any terminal to ground — 300 Vrms CAT III
(up to 400 Hz)
• Input CH1 and CH2 direct (1:1 Probe) — 300 V CAT III
• Input CH1 and CH2 via 1:10 Probe — 600 V CAT III
• Input CH1 and CH2 via 1:100 Probe — 600 V CAT III
• Meter Input — 300 V CAT III, 600 V CAT II
• Scope Input — 300 V CAT III
• Voltage ratings are Vrms (50 Hz - 60 Hz) for AC sine
wave and VDC for DC applications.
• Do not expose the circuit or operate the instrument
without its cover or while power is being supplied.
• Do not use exposed metal BNC or banana plug
connectors, use only the insulated voltage probes,
test leads and adapters that come with the
instrument.
• Do not supply any voltage when measuring
resistance or capacitance in meter mode.
• Do not operate the instrument if it does not operate
properly, have the instrument inspected by qualified
service personnel.
• Do not operate the instrument in wet or damp
environments.
• Do not operate the instrument in any environment
in a risk of explosion.
• Maintain a clean and dry condition to the
instrument’s surface.
Prevention of electro-static discharge
• Electro-static discharge (ESD) can result in damage
to the components in the instrument and
accessories.
• Select a static-free working location when installing
and removing sensitive components.
• Handle sensitive components to the minimum
extent possible. Do not allow contacts between
components and exposed connector pins.
• Transport and store in ESD preventive bag or
container that protects sensitive components from
static electricity.
Safety Information
CAUTION
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