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Model
34904
Section
I
03490-84401
5060-s983
o349Mt612
l2sl{084
I
2s I
-0086
03490-66504
5060{630
0349U66524
0349046525
50606032
0349046526
5060-6032
1.1.
lNTBoDucTl0N.
l-2.
The
Model
3490A Multimeter
makes
ac
voltage,
dc
voltage,
and
resistance
measurements
with 5-digit
resolu-
tion.
It
is
capable
of overrange measurements
up to
l2O%
of
range
on all except the 1000V
ac and
dc
ranges.
Polarity
selection and
display are
automatic.
Range
selection
is
manual or automatic
over all ranges
on
all
functions.
Options are available
to
provide
data
output,
remote
programming,
sample-and-hold
measure-
ments,
and
ratio
measurements.
1-3.
This
manual
contains installation
and
operating
instructions
as well as maintenance
information
for
the
Model
34904 Multimeter.
Instrument
specifications
and
procedures
for
verifying
proper
operation
are
included.
Procedures
are also included
for adjusting the instrument
to its
performarice
specifications.
Schematic
diagrams,
the
theory
of operation, and troubleshooting
informa-
tion
are
provided
for use
in
maintaining
the instrument.
14. This
section
of
the manual
contains the
perfor-
mance specifications for the Model 3490A
and lists the
available options. It
also
lists
the accessories supplied
with the
Model
3490A
and
additional
accessories that
are available.Instrument
and manual
identification infor-
mation is
also included.
1-5.
SPECTFtCATI0NS.
l-6. Table
l-l
is
a complete list
of the
Model 3490A
critical
specifications
that
are controlled
by tolerances.
Table
l-2
contains
general
information
that
describes the
operating
characteristics
of
the
Model
3490A.
l-7.
Any
change
in
the
specifications
due to
manufac-
turing,
design,
or traceability
to
the
U.S. National
Bureau
of
Standards
will
be listed
on
a manual change
sheet
included
with this
manual.
The manual
and manual
change
sheet
supersede
all
previous
information
concern-
ing
specifications
of rhe
3490A.
r-8.
0PT|0NS.
l-9.
The
following
options
are
available to
extend
the
usefulness
of the
Model
3490A:
Option
020:
Option
021:
Option
022:
Option
030:
BCD/Remote
Expand
Isolated
Data
Output
(BCD)
Isolated
Remote
Control
(Options
021
and 022
require
Option
020)
General
Purpose
Interface
Bus I/O
(GPrB)
sEcTt0N I
GENERAT INFORMATION
Option 040 or 045:
Sample-and-Hold
Option 050: 34904
designed
for operation
on
50
Hz
power
source
Option 060:
3490A
desigred
for operation
on
60 Hz
power
source
Option 080:
Ratio
I-Ill. ACCESSORIES
SUPPLIED.
l-ll. The
following
accessories
are
supplied
with the
Model 3490A
and its
option
as
shown.
Supplied
with
all instruments:
Rack
Mount
Kit
PC
Extender
(2
x l8)
Supplied
with
Option 020:
Rear input
cable
36-pin
connector
(mates
with Remote
connector,
J7)
5Gpin
connector
(mates
with Data
Output connector,
J6)
Remote Jumper
Assembly,
A.4
PC
Extender
(2x22)
Supplied
with
Option
030:
l4-pin
connector
(mates
with Trigger
connector, Jl l)
12514142
Remote
Jumper
Assembly,
44
0349U66504
Rear input
cable
0349041612
PC Extender (2
x 22)
5060{630
Supplied
with
Option
040:
S/H Analog
Jumper
Assembly,
A24
0349046524
.-'
S/H Logic
Jumper
Assembly,
A25
03490-66525
PC Extender (2
x l0)
50606032
Supplied with
Option
045:
S/H Analog
Jumper
Assembly,
A24
S/H Logic
Jumper
Assembly,
A25
PC Extender
(2
x l0)
l4-pin
connector
(mates
with
Trigger
connector, Jl l)
12514142
Supplied
with
Option
080:
Ratio
Jumper
Assembly,
A26
PC
Extender
(2
x l0)
1.12.
ACCESSORIES
AVAITABLE.
l-13.
Several
accessories
are available
for use
with the
Model 3490A.
A
service
video tape, Product
No.
90030C
Option
705,
will
demonstrate
use
of self-test
and front
panel
symptoms
to isolate
failures.
The
-hp
111261^
accessory provides
a set
of IC reference
boards with
1-t