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Program
an amplitude
of
8.
00
and
adjust
the
buffer
amplifier zero
potentiometer
(R7) for
zero
output.
Repeat
the
adjustment
of
these
two potentiometers
at the
appropriate amplitude
settings
until the
most
significant
amplitude switch can
be turned
through
its
range
(1
through
9)
keeping
the
output within ±1
mv.
8.
Set
the function
switch
to
triggered square
wave.
Set
the
amplitude
decade
switches
to
"R.
90.
"
Check
the
scope
or
voltmeter
to
see
that
the
output
is
approximately
plus
one-half
volt.
If
it
is
approximately
zero, turn
the
frequency range up and back
to
speed
the starting
pro-
cess.
If
the
output
is
approximately
minus
one
-half
volt,
press
the
button
and wait
for the output to get to the positive
state.
When
the
output
is in
the
positive
state,
set the level
to
+0.450
volts
±500 pv
with
the
buffer amplifier gain potentiometer,
R
19
.
9.
Program
1.
00
and
adjust
R57
for +0.
500
volt
±500
pv.
10.
Program
2.
00
and
adjust
R63
for
1.
00
volt ±1
mv.
^
Program
4,
00
and
adjust
R69
for
2.
00 volts ±2
mv.
Program
8.
00
and
adjust
R75
for
4,
00
volts
±4
mv.
13.
Program
an amplitude
of
9.
99 volts
and
a
frequency
of
999
KHz.
Set
the
function
switch
to
square
wave
and observe
the
waveform
on
the
scope.
Adjust
damping
capacitor
CIO
to
the
desired
compromise
be-
tween
risetime and overshoot.
5-6
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