DMM4040
and
4050
Safety and installation instructions
•
Avoid
Exposed
Circuitry.
Do not touch exposed connections and components when
power
is
present.
Use
Proper
Fuse. Use only the fuse type and rating specified for this product.
Keep
Product
Surfaces
Clean
and
Dry.
&&
Warning
To
avoid
electric
shock,
personal
injury,
or
death, read
the
following
before
using
the
Meter.
• Use the Meter
only
as specified in
this
manual,
or
the
protection
provided
by
the Meter
might
be impaired.
• Do
not
use
the Meter in
wet
environments.
•
Inspect
the Meter before
using
it. Do
not
use
the
Meter
if
it
appears
damaged.
•
Inspect
the
test
leads before use. Do
not
use
them
if
insulation
is
damaged
or
metal is
exposed
.
Check
the
test
leads
for
continuity.
Replace damaged
test
leads before
using
the
Meter.
•
Verify
the
Meter's
operation
by
measuring
a
known
voltage
before
and
after
using
it. Do
not
use
the
Meter
if
it
operates
abnormally.
Protection
may be impaired.
If
in doubt, have
the
Meter
serviced.
•
Whenever
it
is
likely
that
safety
protection
has been impaired, make the
Meter inoperative and secure
it
against
any
unintended
operation.
•
Servicing
of
the Meter
should
be
performed
by
qualified
service
personnel.
• Do
not
apply
more
than
the rated voltage, as marked on the Meter,
between the
terminals
or
between any
terminal
and earth
ground.
• While in IEC Measurement
Category
II
environments,
do
not
apply
voltages
above
600 V ac
to
the
input
of
the Meter. See
"Description
of
IEC
61010 Measurement
Categories"
later
in
this
manual.
•
Always
use
the
power
cord
and
connector
appropriate
for
the
voltage and
outlet
of
the
country
or
location
in
which
you
are
working
.
•
Always
use a
power
cord
with
a
ground
connection
and
ensure
the
ground
is
properly
connected
to
the
power
distribution
system.
• Remove
test
leads from the Meter
before
opening
the
case.
• Never remove the
cover
or
open the case
of
the Meter
without
first
removing
it
from
the main
power
source.
• Use
caution
when
working
with
voltages
above
30
V ac rms, 42 V ac peak,
or
42 V dc. These
voltages
pose
a
shock
hazard.
• Use
only
the
replacement fuse(s) specified
by
the manual.
• Use the
proper
terminals,
function,
and range
for
your
measurements.
•
Do
not
operate
the
Meter
around
explosive
gas, vapor,
or
dust.
•
When
using
probes, keep
your
fingers
behind
the
finger
guards
.
•
When
making
electrical
connections,
connect
the
common
test
lead
before
connecting
the live
test
lead;
when
disconnecting,
disconnect
the
live
test
lead before
disconnecting
the
common
test
lead.
•
Disconnect
circuit
power
and
discharge
all
high-voltage
capacitors
before
testing
resistance,
continuity,
diodes,
or
capacitance.
• Before
measuring
current,
check
the Meter's
fuses
and
turn
OFF
power
to
the
circuit
before
connecting
the
Meter
to
the
circuit.
•
When
servicing
the
Meter, use
only
specified
replacement
parts.
•
To
prevent
damage
to
the Meter,
do
not
change
the
position
of
the
Front/Rear
switch
while
signals
are
applied
to
either
the
front
or
rear
input
terminals.
4
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