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Ohmeda 3000 - Page 22

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4/Calibration
and
Adjustments
.
Normal
Polarity
Leakage
Current
Test
.
Place
the
polarity
switch
of
the
Leakage
Current
Tester
in
the
"Normal"
position.
(This
is
in
the
grounded
mode.)
.
Switch
“On”
the
power
of
the
device
under
test.
.
Measure
the
voltage
on
the
DMM
in
millivolts.
The
millivolt
reading
is
directly
related
to
leakage
current
in
microamps
(i.e.,
100
mv
is
equivalent
to
a
leakage
current
of
100
microamps).
.
Push
the
“Ground
Disconnect”
switch
to
meas-
ure the
ungrounded
leakage
current.
.
Switch
the
power
switch
of
the
device
under
test
“Off”
and
then
repeat
steps
2c
and
2d.
.
Reverse
Polarity
Leakage
Current
Test
.
Place
the
polarity
switch
on
the
Leakage
Current
Tester
in
the
“Reverse”
position.
(This
is
the
grounded
mode.)
.
Switch
“On”
the
power
of
the
device
under
test.
.
Measure
the
voltage
on
the
DMM
in
millivolts.
The
millivolt
reading
is
directly
related
to
leakage
current
in
microamps,
(i.e.,
100
mv
is
equivalent
to
a
leakage
current
of
100
microamps).
.
Push
the
“Ground
Disconnect”
switch
to
meas-
ure the
ungrounded
leakage
current.
.
Switch
the
power
switch
of
the
device
under
test
“Off”
and
then
repeat
steps
2c
and
2d.

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