HP 3438A Operating And Service Manual page 27

Section IV Model 3438A
b.
connect
the 100 kilohm
+
0 , 0 1 ( ~ , resistor
i n
the
K
A
NOTE: Abbreviated Performance Testsare in bold type.
position as shown.
"
.
.
.
Use 746A Output.
DC STANDARD
MULTIMETER
hp 3 4 3 8 A
a@@@Ea
hp 110556
1
3435- 0 - 4 6 5 1
1 0 0 : l RESISTIVE DIVIDER
R I
DESCRIPTION H P P A R T NO.
NOTE
M A X I N P U T
100.6
10 K
+
,0196 W I R E W O U N D 081 1-1185
20 V D C
R 4
100.6
*
1 % W I R E W O U N D
0811-1647
20K
I0 K
t
1% W I R E W O U N D 081 1-3234
Lo COM
Figure 4-1. DC Voltmeter Accuracy Test.
a. Set the Multimeter to acV.
b. Connect the A C Calibrator as shown in Figure 4-2.
c. Check the ranges and frequencies listed in Table4-3
for the tolerances indicated on all ranges through 200 V
(100 V input).
I,'.ye e.u/rrt,ir c,are t t , h m checking / h e
/uilott,ing ranges. E.s/ahli.,l~ all c.onnec,/ions
hc</orc turning o n / h e high ~~olragtp sourc,e.
Cl/l~rn / h e 1e.sl.c. are c ~ o t ~ i p i e ~ e d , lldrti
(?/I
( h e
l ~ i g h ~ ~ o l / a g e hq/bre di.sc,onnec,/itig atl,~. c.uh1e.s
or
/rs/
leads.
d. 1'0 check the 1200 V range and the 190 V input to
the 200 V range. connect the High Voltage Amplifier to
the Multimeter and check the tolerances indicated.
4-12. DC Ammeter Accuracy Test.
4-13. 1 his test requires the use of a power supply, a DC
Standard and a precision resistor listed in rable 4-4 (part
numbers are given in rable 4-1) or a resistor decade box.
a. Connect the Multimeter and test equipment as
shown in Figure 4-3.
Table
Range
rnV
2 V
20 V
ZOO
v
1200 V
Accuracy Test.
Multimeter
Display Limits
19.4 to 20.6 mV
19.6 to 20.4 rnV
19.6 to 20.4 rnV
48.3 to 51.8
rnv
49.0 to 51.1 mV
49.6 to 50.5 mV
98.2 to 101.8 m V
99.4 to 100.6 m V
97.5 to 102.5 r n ~
186.9 to 193.2 rnV
. I 9 4 to ,206 m V
362 to 1.939 V
.994 to 1.006 V
1.94 to 2.06 V
1.96 to 2.04
v
1.96 to 2.04 V
1.96 to 2.04 V
4.96 to 5.05
v
4.83 to 5.18 V
18.91 to 19.09 V
18.91
to
19.09
v
18.62 to 19.39
V
19.6 to 20.4
v
19.4 to 100.6 V
186.9 to 193.2 V
196 t o 204 V
490 to 51 1 V
994 to 1006 V
4-3. AC
AC Calibrator
Output
20 mV
20 rnV
20 rnV
50 r n v
50 mV
50 rnV
100 rnV
100 rnV
100 r n v
.19 V
.2 V
1 . 9
V
1 V
2 V
2
v
2 V
2
V
5 V
5 V
19 V
19
v
19 V
20
v
100 V
*I90 V
*200 V
'500
v
"1000 V
Voltmeter
Test
Frequency
30 H z
50 Hz
20 HZ
100 HZ
30 Hz
20 kHz
30 Hz
50 Hz
50 kHz
30 Hz
30 Hz
100
kHz
20 kHz
30 Hz
50 HZ
200
H z
10
k H z
20 k H z
50 k H z
200
H z
10 HZ
100
k H z
20 HZ
50 H Z
30 H z
20
k H z
30
H Z
10 HZ