SAFETY INSTRUCTIONS
••
Warning
••
To avoid possible electric shock or personal injury, and to
avoid damaging the meter or the equipment under test:
• Do not use the meter in any way not detailed in this
manual or the meter's safety features may be
compromised.
• Before using the meter, inspect the case.
Do not use the meter if it is damaged. Look for cracks
or missing plastic. Pay particular attention to the
insulation around the connectors.
•
•
WARNING
Inspect the test leads for damaged
insulation or exposed metal. Check the test leads for
continuity. Replace damaged test leads before using
the meter.
• Verify the meter’s operation by measuring a known
voltage. Do not use the meter if it operates abnormally.
Protection may be impaired. When in doubt, have the
meter serviced.
•
•
WARNING
Do not apply more than the rated voltage,
as marked on the meter, between the
and
COM
jacks or between any jack and ground. Also do not
input more than the rated current, as marked on the
meter, through the
10A
or
uA/mA
jack.
•
•
WARNING
Do not measure voltages above 1000V in
Category III installations.
•
•
WARNING
Do not attempt to measure voltage with
the rotary function switch in the
,
,
,
,
or
Temp
position. Never attempt to measure current
with the rotary function switch in the
,
or
Temp
position.
• Use caution when working with voltages above
42VAC
RMS
, or 60VDC. These voltages pose a shock
hazard.
• Use the proper terminals, function and range for all
measurements.
6
DMM550_Manual_RR1_FINAL_070914_awb 7/9/14 1:55 PM Page 6
