Maintenance
PERFORMANCE
TEST
Table
6-4.
High-Frequency AC Voltage Test
STEP
NUMBER
1
1
ER~"
TEST
LIMITS
,
(IN VOLTS)
RANGE
VOLTAGE FREQUENCY
COUNTS
MINIMUM MAXIMUM
1
2*
3*
4*
2.
Zero the test lead resistance by pressing the
OFFSET
switch while shorting the
HI
and
LO
INPUT
test leads together.
3.
Verify that the displayed reading
is
within
the
limits
shown for each reading rate.
6-7.
DC
Current
Test
The
following procedure may
be
used to test the
mA
DC
function:
5'
6'
7
8
1.
Ensure the
8840A
is on and has warmed
up
for at
least
1
hour.
2.
Select the
mA
DC
function.
3.
Connect the Current Source to the
2A
and
LO
INPUT
terminals.
4.
For each
step
in Table
6-6,
set the Current Source for
the indicated input and verify that the displayed read-
ing is within the limits shown for each reading rate.
200 mV
200 mV
2V
20V
Table
6-5.
Resistance
Test
*Quick test points.
200V
700V
20V
200
mV
0.01 OOOOV
0.01 OOOOV
0.10OOOV
1
.OOOOV
1.
Using Offset Control.
2. 4-112
Digit Counts.
10.0OOV
1OO.OOV
19.0000V
0.190000V
STEP
1
2
3
4
5
6
7
8
9
10
11
12
3.
Applies to 4-Wire Ohms Only.
4.
When in fast reading rate
with
internal trigger and transmitting
data
out
of
the
IEEE-488
interface, the
8840A
display
must
be
blanked (command Dl)
to
ensure stated accuracy.
50
kHt
100 kHz
100 kHz
100 kHz
100 kHz
100 kHz
100 kHz
100 kHz
7
NOTES:
RANGE
200~
20oQ3
2 kQ
2 kQ
20
kQ
20 kQ
200
k&
200 kQ
2000 kQ
2000 kQ
20 MQ
20 MQ
169
350
350
350
INPUT
(Nominal)
09
(short)
1
OOQ
09
(short)
1
kQ
OQ
(short)
10 kQ
OQ
(short)
100 kQ
OQ
(short)
0.009831
0.009650
0.09650
0.9650
0.010169
0.01 0350
0.10350
1.0350
1
MQ
,/,
OQ
(short)
10
MQ
*47 e50 28
ERROR FROM
INPUT
(~n counts)'
SLOW
24
215
23
21 3
23
21 3
23
213
MEDIUM
to
217
*5
$1
5
4.5
215
25
215
FAST*&
23
24
d2
23
&
23
22
r3
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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