Installing
the
External
P
ower
P
ack
The
external
power
pack
provides
power
to
the
HP
70310A
module
to
maintain
the
temperature
in
the
module's
internal
oven/oscillator
when
the
mainframe
is
turned
o.
An
HP
70310A
Option
002
module
does
not
have
an
internal
oven/oscillator
and,
therefore
,
does
not
need
an
external
power
pack.
Caution
Install
the
HP
70310A
module
into
the
mainframe
and
connect
the
external
power
pack
to
the
HP
70310A
module
before
plugging
the
external
power
pack
into
the
ac
power
source
.
If
the
external
power
pack
is
incorrectly
connected
its
fuse
can
open,
resulting
in
a
6015
Oven
cold
error
at
power-on.
Refer
to
\Fuse
Replacement"
in
this
chapter
for
fuse
location
and
replacement
information.
The
external
power
pack
can
be
installed
on
the
rear
of
the
mainframe
or
on
an
equipment
rack.
F
or
installation
information,
refer
to
Figure
2-3
or
to
the
instructions
shipped
with
the
power-pack
rack-mount
kit.
Line
V
oltage
Selector
The
line
voltage
selector
on
the
external
power
pack
must
be
set
to
correspond
with
the
voltage
of
the
ac
power
source
.
F
or
example
,
Figure
2-4
shows
the
line
voltage
selector
set
to
100
volts
.
Caution
The
external
power
pack
can
be
damaged
if
its
line
voltage
selector
is
not
set
correctly
before
the
external
power
pack
is
plugged
into
the
ac
power
source
.
Figure
2-4.
External
P
ower
P
ack
Line
V
oltage
Selector
A
C
P
ower
Source
The
external
power
pack
must
be
plugged
into
an
appropriate
ac
power
source
before
it
will
function.
However
,
do
not
plug
the
external
power
pack
into
the
ac
power
source
until
the
HP
70310A
module
has
been
installed
in
the
mainframe
and
the
external
power
pack
cable
has
been
connected
to
the
module's
rear-panel
EXT
PWR
connector
.
In
accordance
with
international
safety
standards
,
the
external
power
pack
is
equipped
with
a
three-wire
ac
power
cable
.
When
connected
to
an
appropriate
ac
power
receptacle
,
this
cable
grounds
the
external
power
pack.
The
type
of
power
cable
shipped
with
the
external
power
pack
depends
on
the
country
of
destination.
If
additional
or
dierent
cables
are
needed,
refer
to
the
Installation
and
V
erication
Manual
for
the
system
master
.
Installation
2-5
Summary of Contents for 70310A
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Page 14: ...Figure 1 2 HP 70310A Module with Accessories 1 4 General Information ...
Page 30: ...Figure 2 3 External Power Pack Installation 2 4 Installation ...
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