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NI 4071 7½-Digit FlexDMM Calibration Procedure
900 mA
1 A
35
0 + 2
0
75
+
20
60
500 mA
1 A
29
0 + 2
0
15
+
20
60
250 mA
1 A
29
0 + 2
0
15
+
20
60
–25
0 mA
1 A
29
0 + 2
0
15
+
20
60
–50
0 mA
1 A
29
0 + 2
0
15
+
20
60
–90
0 mA
1 A
35
0 + 2
0
75
+
20
60
2.
2 A
3 A
80
3 + 3
0
378 + 30
60
–2
.2
A
3 A
80
3 + 3
0
378 + 30
60
*
Limits are relative to the c
haracterized value
s
of the Fluke 5720A ca
librator amplitude.
†
T
he Fluke
57
20 Specification
is a 90-
day
95% confidence specifi
cation
that
is
includ
ed in the 24-
Hour
T
oleran
ce.
Ta
bl
e 25.
NI
4071 DC Current
V
e
rification T
o
lerances
Cal
ibrator
Ampl
itude
Ra
nge
2-Y
ear
T
o
ler
a
nce
(ppm of Calibrator
Amp
litude
+
ppm of Range)
24-Hour T
o
lerance
±
(NI
4071 S
p
ecifi
Fluke
5720 S
p
ecification
)
N
I
4071 S
p
ecification
± (ppm of Calibrator
Amp
ppm of Range)
Fluke
5720 S
p
ecification
†
± (ppm of O
u
tput)