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14.
(CONT)
Change
back
to original
signal
setup
and
apply
to B INPUT.
Change
the
DISPLAY
control
to Vc-B
and
adjust
the
input
compensation
using
the
following
table.
Adjust
for
Adjust
for
INPUT
ATTEN
Optimum
Corner
Optimum
Level
1
C210
10
(midr ¢206E}
C206C
C206B
100
.
C208C
C208B
1000
C209C
C209B
Remove
the
TYPE
106
signal
setup.
15.
X10 ATTENUATOR
COMMON
MODE
REJECTION
Minimum
amplitude
Connect
the
OUTPUT
of
the
LFSWG
to A
and
B INPUT
with
the
Dual
Input
Coupler.
Set the INPUT ATTEN
to 100, MILLIVOLTS/
CM
to
50,
DISPLAY
to
A-Vc
and
adjust
LFSWG
for
4cm
of
20kHz.
Change
DISPLAY
to
A-B,
INPUT
ATTEN
to. 10,
MILLIVOLTS/CM
to
1 and
adjust
C206C
for minimum
ampli-
tude.
Remove
the
Dual
Input
Coupler
and
cable
from
TYPE
W.
16.
Ree
>10G9
Connect
the X10
probe
to
the
TYPE
WA
INPUT.
Connect
the
1MQ
resistor
from
the
probe
tip
to:the
Vc OUTPUT.
Set
the
COMPARISON
VOLTAGE
knob
to
10
and
dial
to 00.
Set
the
Vc
RANGE
to 0.
Change
the MILLIVOLTS/CM
to
10.
Change
the
DISPLAY
switch
to: A=Vce..Set
the
INPUT
ATTEN
to
R=»,
Position
the
trace
to
the
graticule
center
line.
Change
the Vc
RANGE
switch
to
+11.
Check
for
<lem
of
trace
shift.
Return
Vc
RANGE
to O
and
check
position
of
the
trace...
Change
Vc
RANGE
switch
to
-11
and
check
for
<lem
of
trace
shift.
.
Change
X10
probe
to B INPUT,
VC RANGE
to
QO and
DISPLAY
switch
to Ve-B.
Repeat
test
for
B
INPUT.
THE
END
W
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