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CALIBRATION
NOTES
9.
(CONT)
d.
Check AC LF bandwidth:
<2Hz2
@-3dB
Change MILLIVOLTS/CM
to 50 and both
INPUT's
to AC.
Set
the
DISPLAY
to
A-Ve
and
connect
the
OUTPUT
of LFSWG
to A INPUT.
Adjust
the
LFSWG
for
a
4cem display
of
50kHz.
Check
the
AC
low
frequency
bandwidth
by
reducing
the
frequency
of
the
LFSWG
to
2Hz
without
changing
AMPLITUDE
controls.
Check
that
>2.8cm
of
display
remains.
Change
the
LFSWG
signal
setup
to
the
B
INPUT,
set
DISPLAY
to
Vc-B
and
re-
peat
the
step.
10.
PEAK OVERDRIVE
RECOVERY
a.
Adjust AC peak
overdrive
recovery:
10a.
Overdrive
recovery
- <0.3us
to return within 10mV
,
Connect the HI-AMPLITUDE OUTPUT of
-.
FE EE
PTT
Dd.
TYPE
106
through
a coax
cable
and
poeerpesccienesconcecncnwoecln els abel iat
502
Terminator
to
A INPUT.
Set
A
INPUT to DC, B INPUT to GND, DISPLAY
10mV/em
to
A-Vc.
MILLIVOLTS
/CM
to
50
and
INPUT
ett
ATTEN
to
100.
Adjust
TYPE
106
for
a 2cm
display
of
Sais
Sain
is oa
al ite
Gs
10kHz
and
trigger
the waveform
at
20u
SEC/CM.
Change
the
INPUT
ATTEN
to
1
and
the MILLIVOLTS/CM
to 10.
Position
the
top
trailing
portion
of
the
waveform
to graticule
center
and
adjust
C116
for
,
equal
corner
aberration
above
and below
the
line
as
shown
in
the
top
figure.
~
44
4
4
2
4
f
4d
4
4
Oe
ee See
ee Se
Se
Sn A
Se A
Change
the plug-in
scope
TIME/CM
to
.1lp
SEC
and horizontally
position
the wave-
form
as
in
the
bottom
figure.
Check
that
eens anes beens hae
waveform
recovers
to
within
lcm
of
grat-
icule
center
at
a point
<3cm
from wave-
form
leading
edge.
10mV/cm'L...¥...
1 ae Noe eee Noe ne wd.
0.lus/cm
15
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