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8502^
CHARACTERISTICS
(Continued)
DC
Volts
(Continued)
RESPONSE TIME
Analog
Settling
Time
Within Voltmeter
Reading Rate
50 Hz
line
4Samt
60 Hz
line
4 Samples/Rdg
32 Samples/Rdg
128 Samples/Rdg
4 Samples/Rdg
32 Samples/Rdg
128 Samples/Rdg
22 ms
162
ms
642 ms
18
ms
136
ms
546 ms
Filter
Mode
Filter,
Fast
Bypass
Bypass
Filter,
Slow
Bypass
Bypass
Step input
to
0.01%
of
Change
40
2
2
400 ms
2
ms
2
ms
Step Input
to
0.001%
of
Change
50
20
20
500
20
20
I
I
*Numher
of
samples per reading
is
programmable
from
I
(2°)
to
131,072
(2^
'^)
in
18
binary
steps.
ZERO
STABILITY
OVERLOAD
Better
than 5 juV
for
90
days
after a
one
hr.
warm-
up.
Front
Panel
pushbutton auto
zero
is
provided.
The
zero correction
is
stored
in
memory
until
power
is
interrupted
or
the
8502A
is
RESET.
If
calibration
memory
Option
--04
is
installed,
the
zero correction
is
retained.
±1200V
DC,
1200V
peak
to
60
Hz, or
1400V
peak
above
60 Hz
may
be
applied continuously to
any
dc
range
without permanent damage.
Maximum
common
mode
rate
of
voltage
rise
is
1
000V//usec.
50 Hz
Fast
Filter
50 Hz
Slow
Filter
60 Hz
Fast
Filter
60 Hz
Slow
Filter
90 dB
95 dB
100 dB
100 dB
at
60 Hz
for
1
KO
un-
balance
Sum
of
Common
Mode
Re-
jection
and
Nor-
mal
Mode
Rejection
128
SAMPLES/READING
Typical
Performance
with
60 Hz
Line
(Combined
digital
and
analog
filtering)
Cusps
shown
are at
multiples of
60 Hz
line
frequency.
Similar cusps (not
shown} occur
every
VA
Hz.
Slow
Filter
Fast
Filter
-40 dB
-100 dB
-120
dB
10
100 240
1K
F
(Hz)-^
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