HP 3457A Service Manual page 215

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poe
1%
A2/1
3457-66502
R111
+15V
+15V
Hl
R112
C112
10K
1000pF
Q113
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INPUT HYBRID
CR112
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34520 F.12.27
Figure 8-10. AC Attenuator Flatness Circuitry
8-51/8-52

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