Fluke 732a - Introduction and Specifications; Introduction; Specifications

732A
Section
1
Introduction
and
Specifications
1-1.
INTRODUCTION
1-2.
The
Fluke
Model
732A is a highly
stable,
rugged,
and
transportable,
solid
stale,
dc
voltage
reference
standard.
The 732A
has lOV,
1.018V
and IV
outputs.
These
outputs
are available
on
front
panel
binding
posts.
The
calibration
adjustments
for the
lOV,
L018V
and IV
outputs are
accessible
through the front
panel. A non-
conducting
adjustment tool
is supplied with
the unit for
this
purpose.
1
-3
. All
outputs
of
the
732A
can
be shorted
indefinitely
without
damage.
Recovery
occurs in
less
than
2
minutes
after
the
short is removed,
with
no
loss of
stability.
I
“4.
The
stability
and accuracy
of the 732A allow
direct
substitution
for saturated
standard cells
in many
applications.
The stability
specification of
0.5
ppm for
30
days
is
achieved
by enclosing
the reference
amplifier
and
output divider
of the 732A in
a high thermal
gain oven.
Full accuracy
is attained over
the
specified
ambient
temperature range
of 23
±
5^C
(64.4
to
82.4"^
F).
Variations
in oven
temperature
may
be monitored
externally
via the
OVEN
TEMP
THERMISTOR
terminals
on the front panel.
I “5. The 732 A may be
powered
from
ac
line
power,
an
internal rechargeable battery, or
an
external low voltage
ac
or
dc source. The 732A is designed to be
powered
continuously,
including
during storage or shipment.
The
back-up battery will
continue to
operate
the
732A
for
up
to 12 hours. Either line or battery power may be removed
without affecting the output. The battery is kept
charged
by an
internal battery charger
when operating from ac
line
power,
or from
the
external
low' voltage
ac
or dc
source.
1«6,
Various front
panel LEDs
(indicators)
provide
a
continuous indication of
the
operating
status
of
the
732A.
The
AC
PWR
indicator
illuminates
in the
presence
of
ac
line power.
The BTRY
CHG
indicator
is on
steadily
for
normal charging activity,
and is off
when
the
battery
is
charged. The IN
CAL
indicator
monitors
the
input
voltage to the
Reference
and Oven.
Should this
voltage
fall below that needed to
keep
the 732A
operational,
the
IN CAL indicator is
latched
off, indicating
a loss of
power
and standardization. Once
power
is
restored
and
standardization
has
been verified,
the
IN CAL
indicator
can be reset.
1-7.
The 732A
may
be used on
the
bench or
rack
mounted. The 732A
is
a half-rack
width
instrument
and
occupies 4
standard
1 .75 inch rack
spaces.
Accessories
for
the 732A are
listed in
Table
1-1
and
described in
more
detail in Section
6
of
this
manual There
are no
options
available for the 732A.
1-8*
SPECIFICATIONS
I
-9.
Table I -2 lists the
specifications for
the
732
A.
Table
1-1.
Accessories
MODEL
NUMBER
DESCRIPTION
MOO-800-523
M07-203-601
M07-200-601
5440A-7002
732A-7001
732A-7002
732A-7003
Dual Mounting
Fastener
Half
Width
Rack
Mount
Kit
Full Width
Rack
Mount
Kit
Low Thermal EMF
Cable
Assembly
Battery Pack
Transit
Case
Battery
Charger
1-1