SecUon VIII
THEORY OF OPERATION
Model 3455A
connected to the input
of
the operational
attenuator is connected to the
E>C
Preamp input by FET switch
through
FET
switch A10Q33 and relay AI0K6. The attenu-
A10Q15. A
DC
preamp gain
of XIO
is selected by
FET
atur
is
set
to a gain of 0.1 (10 to I attenuation)
by
FET
switch AI0Q21. The measurement result is stored
by
the
switch AI
0Q3S. The
output
of the operational attenuator main controller as the lOO V dc gain error constant.
Figure
8-13. 100
V dc and 1000 V dc Gain Error
Measurement.
Figure 8-14. 100
V
dc Reference
Offset Error Measurement.
8-8
To Next Page
Loading...
