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Section III
Model3490A
and' 1.2
V, the
I
V range
should
be used
for
greater
since these terminals
are
connectedinternally.
accuracy.
f. Read ratio
display
directly
if I V
EXT
REF
range
b.
Connect External
Reference (dc
only)
to
EXT
is
selected. If
10V EXT
REFrangeisselected,multipiy
REF
terminals.
display
by 0.1.
c.
Select DC or AC FUNCTION
to
correspond
to
input
signal to be
measured.
NOTE
d. Set RANGE switch
to
desired
range
or to
AUTO.
When
operating in Autorange
mode
with less
than
full-rcale
External
Reference
input
e.
Connect input signal
(dc
or
ac). Input signal
Low (<1
V
or
110
V),
the
first
reading
foiow-
and External Reference
Low must
be at same potential,
ing
on
uprange
will be incotect.
J-L-