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Figure 1. A3S1 service switch.
Instrument Accuracy Test
Calibration Procedure For Power Meter, Model 438A And 438Aopt002
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TB
9-6625-2278-24
Figure
2.
A5
component
location.
(12)
Disconnect
multimeter
from
TI.
(13)
Press
LINE
switch
to
OFF
position.
(14)
Place
all
four
switches
of
service
switch
A3S1
(fig.
1)
into
NORMAL
position.
7
