INFICON Gemini ATM to Ultra-High Vacuum Gauge - Manual (Page 49)

tina83e1-a (2014-02) 49
Corre
ction
Tur
n
on
pow
er
sup
p
ly
.
R
epl
ace i
oni
zati
on
ch
am
-
ber
or
m
eas
ur
ing c
h
am
-
ber
cpl
.(→

43
, 4
5
).
Sw
itch on
th
e hi
gh
vol
tag
e (
→

28)
.
Evacua
te the
vacu
um
system to <1
0
-2
m
bar
and
sw
itch the
ga
ug
e of
f a
nd
on a
gai
n vi
a "H
V ON
".
W
a
it, unti
l t
he
gas
di
s-
char
ge has
igni
te
d
(≈
5 m
inutes
at
a pr
ess
u
re
of 1
0
-9
mb
a
r).
Sw
itch th
e g
aug
e o
ff a
nd
on a
gai
n aft
e
r 5 s.
R
epl
ace the
ga
uge
.
R
epl
ace the
m
easur
in
g
cham
ber
c
p
l. (
→

45)
.
Possible
ca
use
No
su
pp
ly vo
ltag
e
.
Gaug
e co
ntam
in
ate
d
.
N
o
hi
gh
vol
ta
ge i
n th
e
m
easur
ing c
ham
be
r.
Over
pr
essur
e
in
th
e
m
easur
ing c
ham
be
r.
Gas
di
sch
ar
ge has not
igni
ted
.
EEPR
OM
er
ro
r.
M
easur
ing c
ham
be
r
severely co
ntamin
ate
d.
Status signal
0 0 0 0 0
14.5
…
30 V
LED
<HV-ST>
off
lid
so
lid
gr
een off
b
lin
kin
g
gr
een off
lid
so
lid
gr
een
LED
<ST>
off
lid
so
lid
gr
een
lid
so
lid
gr
een
lid
so
lid
gr
een
bl
in
ki
ng
red
lid
so
lid
gr
een
Problem N
o
vol
ta
ge
at si
gnal
o
ut
put.
M
easur
ing si
gnal
unst
abl
e.
Vol
tag
e a
t si
gn
al
o
u
tp
ut
1.2
V (3MAx-xxx-0x0
N
)
0.4
V
(3MAx-xxx-0x0Q
).
Vol
tag
e a
t si
gn
al
o
u
tp
ut
con-
tinual
ly
< 0.3 V
(3MAx-xxx-0x0
N
)
< 0.5 V
(3MAx-xxx-0x0
Q
).
Si
gnal
c
onti
nual
ly
a
t a
ppr
ox.
5×
10
-4
m
bar
.