Ohms Test Limits; Oc Common Mode Rejection Test - HP 3456A Operating And Service Manual

Performance Test
D C STANDARD
S V S T R O N O O N N E R M O D E L M I 0 7 A
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3456-4-5
VOLTS LOW terminals, as shown in Figure 4-5, Make
sure the GUARD terminal is connected to the VOLTS
HIGH terminal (Make sure the GUARD switch is
"OUT"),
00, Record the 3456A reading.
pp, With the DC Standard's output off, connect it
between the 3456A's chassis and VOLTS HIGH ter­
minal as shown in Figure 4·5.
qq. Set the DC Standard for a
turn its output on.
rr. The 3456A's reading should be within 0,0000 1 0 V
of the recorded reading in Step
ss. Disconnect the test equipment from the 3456A. If
the DC Common Mode Rejection Test fails, refer the
3456A to a service trained person. This completes the
DCV Test.
Ohms Tnt
4-37.
4-38. Make sure the 3456A has been warmed·up for at
least an hour. or inaccuracies may result or unstable
readings may be indicated. Refer to Table 4·3 andlor
3458A
3458A
.
Input
. ...
Shon Autorange
Shon Autorange
1 0 kG Autorange
1 kO
Autorange
100 G Autoranga
100 kG Autoranga
1 MO Autoranga
10 MO Autorange
1 GO
Autorange
1 MO Autoranga
10 kO 100 K
1 0 kO 100 K
100 K
100 kG
100 kG 100 K
4-8
C O N N E C T E D T O
C H A S S I S
0
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Figure 4-5. OC Common Mode Rejection
+
100 V output and
00.
Teble Ohm. Tut Limits
4-3.
3458A
Set·Up
2-Wire Ohms -00.0024 to 00.2024
4-Wire Ohms -00.0024 to 00.0024
9.99966 + 3 to 1 0.00034 + 3
4-Wira Ohms
4-Wira Ohms 999.966 + 3 to 1000.034 + 3
4·Wire Ohms 99.9936 to 100.0064
4·Wira Ohms 99.9968 + 3 to 100.0032 + 3
4·Wira Ohms 999.928 + 3 to 1000.072 + 3
9.99578 + 6 to 10.00422 + 6
4·Wira Ohms
4-Wira Ohms 893.999 + 6 to 1 1 60.001 + 6
2·Wira Ohms 999.928
4-Wira Ohms 9.9995 + 3 to 10.0005 + 3
Autozaro Off 9.9993 + 3 to 10.0007 + 3
2·Wire O.C. 99.9966 + 3 to 1 00.0034 + 3
Autozero On
4·Wire O.C. 99.9968 + 3 to 1 00.0032 + 3
D I G I TAL
hp
GROUND
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Tilt
the Ohms Performance Test Card for the Ohms Test
limits.
4·39. Equipment Required.
Standard Resistor:
100 ohm ± .000 5 0/0; (Guildline Model 9330/100 or
9330AllOO)
1
K ohm .000 5 %; (Guildline Model 9330/1K or
±
9330Al IK)
10 K ohm ± .001%; (Guildline Model 9330/10K or
9330AlIOK)
100 K ohm ± .001 %; (Guildline Model 9330/100K
0, 9330AllOOk)
1 M ohm .002%; (Guildline Model 933011 M)
±
10 M ohm ± .01 %, (Guildline Model 95206)
Resistor Assembly:
(1000 M ohm
03456·67902)
4-40. Test Procedure.
a. Press the 3456A's RESET button. Short across the
VOLTS (2WR, 4WR) and
terminals as shown in Figure 4-6.
90 o.y Li",itl
·00.0024 to 00.2024
·00.0024 to 00.0024
9.99976 + 3 to 1 0.00024 + 3
999.976 to 1 000.024
99.9946 to 1 00.0054
99.9978 + 3 to 1 00.0022 + 3
999.938 + 3 to 1 000.062 + 3
9.99588 + 6 to 10.004 1 2 + 6
889.999 + 6 to 1 1 10.001 + 6
3 to 1 000.072 + 3 999.938 + 3 to 1000.062 + 3
+
9.9996 + 3 to 1 0.0004 + 3
9.9994 +
99.9976 + 3 to 100.0024 + 3
99.9978 + 3 to 100.0022 + 3
Model 3456A
V O L T M E T ER
3 4 5 6 A
± 2%; .hp. Part Number
RA
TlO REF (4 WR SENSE)
24 Hour Lilll i ts
3
to 1 0.0006 + 3
-
.---- - .