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HP HP-97 - Page 82

HP HP-97
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Component-Level
Maintenance
HP-97
CRS
0-
CR6
Test
points:
Anodes
of
CR5
and
CR6
Test
point:
TP1
Oscilloscope
time
base:
2
us/cm
Time
Dbase:
0.1
ms/cm
Vertical
gain:
5
V/cm
Vertical:
2
V/cm
Figure
4-6.
CR5
and CR6
Anode
Waveforms¥
Figure
4-8.
SYNC
Waveform
Test
points:
TP5
(®1)
and
TP6
(P2)
Test
points:
RCD:
Pin
21
of
ACT
(U1)
Oscilloscope
time
base:
1
us/cm
STR:
Pin
11
of
ROM
0
(U2)
Vertical
gain:
5
V/cm
Time
base:
0.5
ms/cm
Vertical
gain:
2
V/cm
Figure
4-7.
1
and
2
Waveforms¥*
Figure
4-9.
RCD
and
STR
Waveforms¥
*
These
waveforms
are
seen
with
an
HP
182C
oscilloscope,
HP
1804A
Vertical
Amplifier
Plug-In.
Vertical
bandwidth
50
MHz.
Calculator
ON,
with
0.00
in
display.
4-20

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