T
O
S
8040
Panel
O
perations
37
Current detection lower reference limit
I
f
t
he le
a
k
a
ge
c
u
rr
en
t
me
a
su
r
ed is less
t
h
a
n
t
he v
a
lue se
t
he
r
e
,
a
F
AIL
de
t
e
r
min
at
i
o
n
is
r
e
t
u
r
ned (l
o
we
r
limi
t
judgmen
t
)
.
V
a
lid
c
u
rr
en
t
v
a
lues
ra
nge f
ro
m
0
m
A
to
1
/
2
o
f
t
he uppe
r
r
efe
r
en
c
e limi
t
v
a
lue se
t.
(The l
o
we
r
r
efe
r
en
c
e limi
t
v
ar
ies p
ro
p
ort
i
o
n
a
lly
wi
t
h
t
he uppe
r
r
efe
r
en
c
e limi
t
v
a
lue
.
)
Fig.
5-6
Setting
a
Current
D
etection
Lo
w
er
Reference
Limit
•
I
f
t
he l
o
we
r
r
efe
r
en
c
e limi
t
is
to
be
1
/
2
o
f
t
he uppe
r
r
efe
r
en
c
e limi
t
v
a
lue se
t,
t
u
r
n
t
he VR
a
ll
t
he w
a
y
c
l
oc
kwise
.
T
o
se
t
t
he l
o
we
r
r
efe
r
en
c
e limi
t
to
ot
he
r
v
a
lues
,
see
■
A
dvantages of lower limit judgment
I
f
t
he v
ar
i
at
i
o
n in le
a
k
a
ge
c
u
rr
en
t
v
a
lues
o
f
t
he DUT is sm
a
ll
a
nd is m
or
e
t
h
a
n
t
he
c
u
rr
en
t
v
a
lue
t
h
at
ca
n be
r
e
co
gnized by
t
he
t
es
t
e
r,
t
es
t
wi
t
h
t
he l
o
we
r
r
efe
r
en
c
e limi
t
se
t
to
a
v
a
lue bel
o
w
t
he l
o
we
r
limi
t
o
f v
ar
i
at
i
o
ns
.
This
a
ll
o
ws iden
t
ifi
cat
i
o
n
o
f DUTs
wi
t
h ex
c
ep
t
i
o
n
a
lly sm
a
ll le
a
k
a
ge
c
u
rr
en
t
or
de
t
e
ct
i
o
n
o
f
co
n
tact
f
a
ilu
r
e
or
b
ro
ken
wi
r
es in
t
he
t
es
t
le
a
ds f
or
highe
r
qu
a
li
t
y wi
t
hs
ta
nding v
o
l
ta
ge
t
es
t
ing
.
O
FF
O
N
R
E
F
E
R
E
NC
E
L
O
W
E
R
T
o
se
t t
he
l
o
we
r r
efe
r
en
c
e
limi
t, a
djus
t t
he
v
ar
i
a
ble
r
esis
tor
(VR)
using
a
n
a
djus
t
men
t
s
cr
ewd
r
ive
r.
V
a
lid
c
u
rr
en
t
v
a
lues:
f
ro
m
0 to 1
/
2 o
f
t
he
uppe
r r
efe
r
en
c
e
limi
t
v
a
lue
se
t
Tu
r
ning
t
he
VR
a
ll
t
he
w
a
y
c
l
oc
kwise
se
t
s
a c
u
rr
en
t
v
a
lue
equ
a
l
to 1
/
2 o
f
t
he
uppe
r r
efe
r
en
c
e
limi
t
v
a
lue
c
u
rr
en
t
ly
se
t.
En
a
bles
l
o
we
r
limi
t
judgmen
t.
I
f no lo
w
er limit
j
udgment is to
b
e made
,
move the s
w
itch to the
O
FF position.
NOTE