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21
4.0 Operation
4.1 Preparation and safety measures
Fitting the battery
Before u
s
ing the in
s
trument, the
b
attery mu
s
t
b
e fitted. Thi
s
i
s
carried out a
s
follow
s
:
1.
S
eparate the in
s
trument from any circuit, and remove the te
s
t
lead
s
.
2. Open the cover
b
y removing the
s
crew and pu
s
h in direction of
the arrow.
3. Fit new
b
atterie
s
(type 1,5
V
IEC LR6), taking care that the
polarity i
s
correct. Make
s
ure that no wire
s
are trapped
b
etween
the cover, and clo
s
e it again.
4. The in
s
trument i
s
now ready for u
s
e.
ATTENTION
!
• Before
s
witching to a new function, the pro
b
e
s
mu
s
t alway
s
b
e
removed from UUT.
• U
s
e the in
s
trument only in clean and dry
s
urrounding
s
. Dirt and
moi
s
ture reduce the effectivene
ss
of the in
s
ulation, with con
s
e-
quent danger of electric
s
hock, e
s
pecially when dealing with
high voltage
s
.
• U
s
e the in
s
trument only in the
s
pecified range
s
.
• Before making mea
s
urement
s
, verify that the in
s
trument i
s
functioning properly, for example
b
y te
s
ting on a known voltage
or current.
• Make
s
ure that the te
s
t lead
s
are undamaged.
4.2 Current Measurements
ATTENTION
!
Never mea
s
ure current
s
in unin
s
ulated conductor
s
carrying more
than 250
V
!
DANGER
!
Only handle te
s
t lead
s
and pro
b
e
s
on the grip
s
provided. Avoid
touching the pro
b
e
s
under any circum
s
tance
s
.
PTDB93468-05.qxd 14.12.2005 9:41 Uhr Seite 21