Module
Description
The
HP
70310A
Precision
Frequency
Reference
is
a
1/8-width
module
designed
to
plug
into
HP
70000
Modular
Measurement
System
mainframes
.
The
HP
70310A
module
provides
10
MHz
and
100
MHz
precision
reference
signals
for
use
by
HP
70000
Modular
Measurement
Systems
and
other
instruments
.
The
HP
70310A
functions
either
by
itself,
as
a
separate
frequency
reference
,
or
as
a
slave
to
an
HP
70000
Modular
Measurement
System
master
element
such
as
the
HP
70900A
Local
Oscillator
.
When
the
HP
70310A
is
congured
as
a
slave
,
it
is
controlled
by
the
master
element.
Module
Options
The
HP
70310A
Precision
Frequency
Reference
has
the
following
module
options:
Option
W30
adds
2
years
to
the
standard
1
year
return
to
Hewlett-P
ackard
service
warranty
.
Option
001
adds
two
distribution
ampliers
that
accept
inputs
of
5
MHz
to
300
MHz.
Each
distribution
amplier
has
one
input
and
three
outputs
.
Option
002
deletes
the
HP
70310A
module's
internal
oven/oscillator
and
the
external
power
pack
accessory
.
HP
70310A
Option
002
modules
must
be
connected
to
an
external-reference
signal
of
1,
2,
5,
or
10
MHz
to
operate
.
Option
910
adds
another
set
of
the
manuals
that
normally
ship
with
the
module
.
Option
915
adds
the
module
service
documentation
and
module
verication
software
.
Safety
Considerations
Before
operating
this
module
,
familiarize
yourself
with
any
safety
markings
on
the
module
and
the
safety
instructions
in
this
manual.
This
module
has
been
manufactured
and
tested
according
to
international
safety
standards
.
However
,
to
ensure
safe
operation
of
the
module
and
personal
safety
of
the
user
and
service
personnel,
the
cautions
and
warnings
in
this
manual
must
be
followed.
Refer
to
the
summary
of
safety
considerations
at
the
front
of
this
manual.
Modules
Covered
by
Manual
Serial
Numbers
Attached
to
the
front
frame
of
the
module
is
a
serial-number
label.
The
serial
number
is
in
two
parts
.
The
rst
four
digits
and
letter
are
the
serial
number
prex;
the
last
ve
digits
are
the
sux.
See
Figure
1-1.
The
prex
is
the
same
for
all
identical
modules;
it
only
changes
when
a
change
is
made
to
the
module
.
The
sux,
however
,
is
assigned
sequentially
and
is
dierent
for
each
module
.
The
contents
of
this
manual
apply
to
modules
with
the
serial
number
prexes
listed
under
\Serial
Numbers"
on
the
manual
title
page
.
1-2
General
Information
Summary of Contents for 70310A
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