Service manual
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Agilent Technologies Manuals
Multimeters
8485D
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Service
Chapter 3
42
In most cases, the operatio
nal amplifier (made up
of A2Q1 and the first am
plifier of
the power meter
,) is operating correctly
if the dc voltage on the metal cover of A2Q1
(collector) is -70 ±30 mV dc.
1
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