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Valleylab Force FX-C - Page 113

Valleylab Force FX-C
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Force
f)(rM_C
Service
Manllal
Calibrating
the
Force
FX-C
Generator
-------------------
Checking
the
Reactance
Gain
for
Bipolar
Output
1,
Connect
the
test
equipment
for
bipolar
output.
a,
Connect
the
two
test
cables
to
the
Bipolar receptacle,
b.
Pass
one
test
cable
through
the
current
transformer
and
connect
the
current
transformer
to
the
voltmeter.
c.
Connect
the
30
ohm
resistor
across
the
output
jacks
at
the
end
of
the
test
cables.
d.
Connect
the
bipolar
footswitch
to
the
Bipolar
Footswitch
receptacle.
2.
Adjust
the
Z
fador
for
bipolar
output.
a.
Press
the
Med
(Standard)
button.
b.
Press
the
bipolar
footswitch
pedal
and
check
the
voltmeter
for
a
reading
equivalent
to
1250 ± 12
rnA
rms.
c.
Stop
activation.
If
the
output
current
reading
was
too
high,
lower
the
Z factor.
If
the
reading
was
too
low,
raise
the
Z factor,
To
change
the
Z factor
by
ones,
press
the
Coag
up
(
A)
or
down
( v )
arrmv
buttons.
To
change
it
by
hundreds,
press
the
Cut
up
( A )
or
down
( V )
arrow
buttons.
Repeat
this
step
until
the
voltmeter
reading
is
within
the
stated
range.
The
Z factor for
the
Precise
and
Macro
modes
is
adjusted
automatically,
3.
Disconnect
the
test
cable
<md
remove
the
30
ohm
resistor,
Checking
the
Reactance
Gain
for
Monopolar
Output
1.
Connect
the
test
equipment
for
monopolar
output.
a.
Connect
one
test
cable
to
the
left
jack
in
the
Monopolar
1/
CEM
Instrument
receptacle.
Pass
the
test
cable
through
the
current
transformer
and
COImect
the
current
transformer
to
the
voltmeter.
b.
Use
a
test
cable
to
short
the
hvo
pins
on
the
Patient
Return
Electrode
receptacle.
c,
Connect
the
second
test
cable
from
the
voltmeter
to
both
pins
of
the
Patient
Return
Electrode
receptacle.
d.
Connect
the
200
ohm
resistor
to
the
test
cables
through
the
current
transformer
for
monopolar
output.
e.
Connect
a
monopolar
footswitch
to
the
Monopolar
1
Footswitch
receptacle
on
the
rear
panel.
2.
Adjust
the
Z factor for
the
Low
and
Pure
cut
modes.
a. Press
the
Pure
button.
b.
Press
the
footswitch
cut
pedal
and
check
the
voltmeter
for a
reading
equivalent
to 949 ± 3
rnA
rms.
5-35

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