T
O
S
8040
Precautions
for
Safe
Testing
25
3.3.3
Checking
S
afety after
S
hutting off the
O
utput
■
Checking indications at two locations
I
f y
o
u mus
t
to
u
c
h
t
he DUT
,
t
es
t
le
a
d
,
t
es
t
p
ro
be
,
a
nd/
or
a
high
-
v
o
l
ta
ge
-c
h
ar
ged se
c-
t
i
o
n su
c
h
a
s
t
he pe
r
iphe
r
y
o
f
t
he
o
u
t
pu
t
t
e
r
min
a
ls f
or
r
e
-
ins
ta
lling wi
r
ing
,
e
tc.,
c
he
c
k
t
he indi
cat
i
o
ns
at
t
he
t
w
o
l
ocat
i
o
ns sh
o
wn in Fig
.
3-7
to
ensu
r
e s
a
fe
t
y
.
Fig.
3-7
Chec
k
ing
for
the
A
b
sence
of
High
Voltage
■
When disconnecting the test leads from the
DUT
Dis
co
nne
ct
t
he
r
ed
t
es
t
le
a
d f
ro
m
t
he
HIGH
V
OL
T
AG
E
t
e
r
min
a
l
.
Y
o
u d
o
n
ot
need
to
dis
co
nne
ct
t
he bl
ac
k
t
es
t
le
a
d f
ro
m
t
he
LO
W
t
e
r
min
a
l
.
Fig.
3-8
D
isconnecting
the
H
I
GH
V
O
LTAG
E-
side
Test
Lead
C
o
nfi
r
m
t
h
at t
he
D
ANG
ER
l
a
mp
is
n
ot
li
t.
C
o
nfi
r
m
t
h
at t
he
v
o
l
t
me
t
e
r
indi
cat
es
“
0.00
”
.
HIGH
V
OL
T
AG
E
-
side
t
es
t
le
a
d
(
r
ed)