Model 531
5A/B
Operation
•
•
3-14
AErEREI'<C£
"PUlIOUIPuf
AC
power input module permits operation from
100
,
120
,220,or 240vohs ac. The
number
visible
in
the win
do
w indicates nominal
li
ne
vo
ltage to which instrument must
beconnec-
ted (
see
Figure
1-
1). Protecti
ve
grounding
conductor
connects
to
the
instrument through
th is module.
WARNING
ANY INTERRUPTION
OF
THE PROTECTIVE
(GROUNDING)
CONDUCTOR
INSIDE
OR
OUTSIDE THE INSTRUMENT
OR
DIS-
CONNECTING
OF
THE PROTECTIVE EARTH TERMINAL
IS
LIKELY
TO
MAKE THE INSTRUMENT DANGERSOUS.
(See
See-
lion
II.)
fREQ
STD
J8
jack. Allow 53158
to
be
operated
sync
hrono
us
with an external standard of
10 megahertz with drive of 1-voh rms across
soon.
fREQ
STD
select
swi
t
ch
mu
st
be
set
to
EXT
position. Pro
vi
des
10
megah
ertz
internal standard signal for external use
when
FREQ
STD
select switch
is
set to
INT
poSition. With Option 001 installed, this
is
an
output
only.
F;gure 3-9.
5315B
Rear Panel Features
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