HP 3438A Operating And Service Manual page 31

Section IV Model 3438A
AC CALIBRATOR MULTIMETER
hp 745A
hp
3 4 3 8 A
ELECTRONIC COUNTER
~-
- . - T
m n m
000
--
3 4 3 5 ~ 8 - 4 8 1 8
-
Figure 4-8. AC Common-Mode Rejection Test.
e. The reading o n the Multimeter should not change
by more than 0.010 V o r I0 digits from the reading noted
in Step c in order t o verify and AC Common-Mode
Kejection of 2 60 dB.
f. Kepeat Steps c and d with the frequency adjusted t o
60 HL 2 0.1
(/;,
(
16,650
p
s
to 16.683
p
s).