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INSTRUCTION
MANUAL
Digital
Multimeter
Models 172A. l73A
MAINTENANCE
TABLE 6-4.
Resistance
Performance
Check.
RESISTANCE
SETTING
200.00
n
2.0000
KQ
20.000
KR
200.00
K0
2.0000
MR
20.000
MR
200.00
Ma
.er's
specific
I
:d
NOMINAL
DISPLAY
T-
SOURCE
ERROR;'
200.00
2.0000
20.000
200.00
2.0000
20.000
200.00
I
L
I
..^
uncertainty
for
the
Decade
Resistor
(D) and the
0.1X
TOLERANCE (SPECIFIED
ACCURACY) IN DIGITS
20"
to 30°C
HI
LO
f. 8 digit!
+ 8 digits
i 8d
+ 8d
t 8d
-I-
+ 8d
k IOd
f: Ild
i 3ld
t 37d
t
l6Od
t 30ld
? 2 digits
t 2d
2 2d
+_ 2d
t 2d
i 2d
+ 20d
200MQ
resistor.
Add uncertainty
to
the
Tolerance
to obtain
allowable
reading
if
these
items
are
used
for
the
accuracy
check.
f.
Current
Accuracy
Check
(Model
173A Only).
1)
Select
DC and A.
2)
Select
AUTO.
3)
Connect
Current
Source
(E)
to
the
instrument
input
terminals.
4)
Set
the
current
source
to the
currents
given
in.Table
6-5.
Verify
that
each
reading
is within
specified
limits.
6
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