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Model 3490A
Section
I
Table
1-1
.
Specifications.
DC
VOLTAGE
Full-Rangp
Display:
.
:1P9P.Y
r
10O.oOo
v
i
I;IBBBB V
.
rooo.öö
v
Overrange: 2O % onall ranges
except
1000
V
range
Aeuracy:
t
l%
of
reading +
To
of rangel
Temperaturo
Coefficient
(0o
C to
50o
Cl:
O.1 V
Range: t
(0.00,l
%
of
reading
range)/o
C
'
1V
through
1OOOV
Ranges:
r(O.OO1
Temperature
Coefficient
l0o
C to
reading
+
0.001
%
of
range)F
C
Voltage
Coefficient
(1000V
range):
kHz
to
% of
reading
Input
lmpedance:
2 Mf, t
1 %shunted
by:
(
65
pF
without
rear
input
terminal
<
90
pF
with
rear
input
terminal
OHMS
Full-Rangs
Display:
.100000
ke
l.oo000
ko
10.0000
ka
100.000
ko
1000.00
ko
10000,0
ko
Overrange:
2O
% on
-all
ranges
Accuracy:
+
(%
of
reading
+
oÄ
of
rangel
50P
Cl: r
(0.002
%
of
Add
0.01
ppm
per
Volt/
+
0.OO03
% of
rangelp
C
Voltage
Coefficient
{
I 000
V range)
:
reading.
Effectlve
Common{lode
Rejoction
either
loadf:
AC:
Option
O5O
(SO
Hz
power
50H2t0.1
%
Option
060
(@
Hz
power
6OHzt0.1
%
DC:
)
140dB
AC Normal{Vlode
Rejection
:
Option
05O
(5O
Hz
power
!O.l%
Option
060
(60
Hz
power
to.1
%
Input
Resistance:
+
0.0007
%
of
% of
reading
Add
0.04
ppm/vott
to
% of
(with
1
kf,l
imbalance
in
frequency):
)
140
dB
at
frequency):
)
140d8
at
frequencyf:
>S0dB
at
50
Hz
frequency):
>
50
dB
at
60 Hz
O.1,V
through
10
V
ranges
(<
70%
R.H.):
>
2
x 1010
O
100
V
and
lü)0
V ranges:
10
MO
I
O.1S
%
-
AC
VOLTAGE
Full-Range
Display:
I.OOOOO
V
10.0000
v
100.000
v
1000.00
v
20
Hz
50
Hz
100
kHz*
2SO kHz
24
hours
(230
C r
10
cl
3)
days
(230Cr50c)
90
days
(230C150C)
6 months
(23()C15()Cl
l
ye€r
(230c+5()Cl
I
Frequencies
greater
than
l0
V
ranges
only.
lO0
kHz
specified
on
1 V
and
Overrange:
2O%on
all ranges
except
IOOO
V
range
ttTlgnt
Rango:
20
Hz
to
250
kHz
(Guard
shorted
to
Low),
10'
nnximum
Volt-Hertz
product
Accuracy:
x
l%ot reading
t
% of
range)
lnput
levels
above
1 % of
range
Guard
must
be
connected
to
Low
Temperature
Coefficient
(0o
C to
50o
C):
0.1
ko
range:
!
(O.OOI
%
of
reading
+O.OO07
%
of
range)P
C
1 kO
through
t0,0OO
kf,l
ranges
(<
70%
R.H.
on
1OOO
kj_l
and
10,0O-0
kf,!
ranges):
r
(O.OO1%
ot
reaaint
i
O.OOOSX
of range)/"C
DATA
OUTPUT
(Optaon
OZtl
BCD
1-2-4€,
High
true
or
Low
true
logic
code,
selectable
by
internal
sl,rritch
I
nput
Signals
Output
Signals
High
Level
Low
Leval
+3.9Vr1.5V,
100pA
max.
+3.9
V r
1.5
V,
4O0
pA
rnax.
+0.3v
t0.3V,
2
mA rnax.
+0.3vr0.3v,
15
mA
max,
REMOTE
CONTROL
(Option
0221
Remote
programming
of
range
and
function
uses
|rigrh
true
rogic
code.
I nput
Signals
Output
Signals
High
Level
Low
Level
+3.9Vt15V,
100pA
max.
or
open
circuit
+3.9Vr1.5V,
40O
pA
nrax.
+0.3v!0.3v.
2 mA rnax.,
or
contact
closure
to
ground
through
< 300
o
+o.3V
r0.3V,
15
mA
nnx.
24 hours
{23oc
!
loc)
30 days
(23oc1soc)
90 days
(23oc
r5()c,
6 months
{23ocisocf
1
year
{23oc!soc)
.1 V
Range
1V-f00{,VRangas
t
(0.005
+
0.001
)
I
(0.01
+
0.005)
!
(0.01
+
0.005)
r
(0.013
+
0.0051
t
(o.015
+
0.0051
(0.004
+
O.OOI
)
(0.008
+
0.0021
(0.01
+
0.0021
(0.013
+
0.oo2l
(o.015
+
0.oo2l
24 hours
(23oc
1
loc)
30
days
(23oc!socl
9O
days
l23oc!50c)
6 months
{23oc
t
socl
I
year
0.006
+
0.001
0.O12 +
o.OOs
0.012
+
o.oo5
o.ot
5
+
0.005
0.018 +
O.OO5
0.005 +
0.001
O.01
+
0.002
0.012
+
0.002
0.0t5 +
0.002
0,018 +
0.002
0.007 +
0.001
o.0t2
+
0.002
0.0'l5
+
0.002
0.02 +
0.002
0.025 +
0.002
0.025
+
0.ool
0.035
+
0.002
0.035
+
0.002
0.04
+
0.o02
o.05
+
0.002
0.32+0.05
lO.oo+0.025 |
0.7
+0.06
0.35+0.05
lo.r
+0.025
|
o.zs*o.oe
0.35+o.os
lo.t
+o.o2s
lo.zs*o.oo
0.4
+0.06
|
o.r
+0.03
|
o.zs*o.oz
0.45+0.07
|
o.tz+o.o3s
|
0.7s+o.o8
l-3