Simplified A/D Converter Schematic - HP 3456A Operating And Service Manual

Digital voltmeter
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."
1
0402/403
0 4 0 5
TP40l
I N T E GRATOR
OVERLOAD
D E T E C T O R
(403
U 4 0 9 a , c , d
0 4 0 6
U 4 0 5
U 4 0 6
i
30
0407
M D AUT02ERO
- 1 2 V a
Figure 8-26, Simplified AID Converter Schematic.
L O G I C
LOVL
TO
INGUARO
TP403
ZERO
TP405
COMPARATOR
U 4 0 9 b
SWlTCH
34��-8-,�
TO
INGUARO
L O G I C
8-1 9/8-20

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