Model 3438A
SECTION IV
PERFORMANCE TESTS
Section 1V
4-1. INTRODUCTION.
4-9. A DC Standard is required for this test
4-2. This section of the manual explains the a. Set the Multimeter to dc volts and 20 mV range.
Performance Tests used to verify the specifications listed
in Section
1,
Table 1-1. A Performance Test Card is at the b. Allow the Multimeter to warm up for 15 minutes.
end of this section for recording the results of these tests.
c. Connect the
DC
Standard to the
VCl
and
COM
4-3. Test Equipment Required.
terminals as shown in Figure 4- 1.
4-4. Equipment required for the Performance Tests is
d. Check all the ranges listed in Table
4-2 for thc toler-
listed in Table 4-1. Equipment that satisfies the critical ances indicated.
specifications given in the table may be substituted for a
recommended model. Test equipment set-ups are shown
for each Performance Test.
Table
4-2.
DC Voltmeter Accuracy Test.
4-5. PERFORMANCE TESTS.
4-6.
The Performance Tests will be described in the
following sequence:
a.
DC
Voltmeter Accuracy Test.
b. AC Voltmeter Accuracy Test.
c. DC Ammeter Accuracy Test.
d. AC Ammeter Accuracy Test.
e. Ohmmeter Accuracy Test.
f. ACV Normal Mode Rejection Test.
g. ACV Common Mode Rejection Test.
4-7.
Abbreviated Performance Tests.
Each
Performance I'est has an associate tablc that give5 the
Multimeter and test equipment settings. and
the
Multimeter display tolerances. With~n each tablc, certain
tests arc highlighted by bold type.
These tests comprise
the Abbreviated
Per-formance lests. The Abbreviated
Performance
I'est, should be used to verify a repair. The
complete Perlol.mance Test is used to certiSy the
Multimctcr performance.
4-8. DC Voltmeter Accuracy Test.
NOTE: Abbreviated Performance Tests are in bold type.
*On the
200 1nV
Range a
100
1
resist~ve dlvlder
IS
used w~th the DC Standard output voltage to
provlde the needed accuracy
Multimeter
Display
Lim~ts
19.8
to
20.2 mV
49 8
to
50.3 mV
-99.7
to
-100.3 mV
-189.6
to
-190.4
mV
.I89
to
,191 V
,499
to
-.502 V
,998
to
1.002 V
1.897
to
1.903 V
1.89
to
1.91 V
4.99
to
5.02 V
-9.98
to
-10.02 V
*
18.97
to
+
19.03 V
-18.9
to
-19.1 V
-49.9
to
-50.2 V
99.8
to
100.2 V
189.7
to
190.3 V
-189
to
-191 V
499
to
502 V
998
to
1002 V
Range
"200 mV
2 V
20 V
200 V
1200 V
4-10.
AC Voltmeter Accuracy Test.
DC Standard
Output
t
1.9V
t
5.0 V
10.0 V
-19.0 V
-.I9 V
50 V
+
1.ov
+
1.9V
+
1.9V
+
5.0 V
10.0 V
?
19.0 V
-19.0
V
-50.0 V
+
100.0
V
+
190.0 V
-190.0 V
+
500.0 V
+
1000.0
V
4-1 1. An AC Calibrator and High Voltage Amplifier will
be required for this test.
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