T
.O
. 33K8-4-551-I
4 .1
.3 On the Null Detector, set the OPR/ZERO switch to ZERO and adjust for zero on the 3 1
.1V range
. Set the Null
Detector 0PR/ZERO switch to OPR.
4
.1
.4 Set the Tl to the first range listed in the Range column of Table 3.
4
.1
.5 Set the Null Detector Range switch to the 30 V position.
4
.1
.6 Set the Calibrator for the first value listed in the Applied column of Table 3.
4
.1
.7 Set the DC Reference Divider MODE switch to the first position listed in the DC Ref Div column of
Table 3.
4
.1
.8 Set the Calibrator OPR/STBY switch to OPR.
4
.1
.9 Adjust the Calibrator Edit controls to obtain a null while increasing the sensitivity of the Null Detector to
maximum with less than full scale deflection.
4
.1
.10 Set the Null Detector Range switch to the 1000 V position.
4
.1
.11 Divide or multiply the DC Reference Standard Certified Value by the factor listed in the Factor column of
Table 3.
4
.1
.12 The Tl must indicate the value obtained in step 4
.1
.11 ± the values listed in the corresponding Limits column of
Table 3.
4
.1
.13 Set the Calibrator OPR/STBY switch to STBY.
4
.1
.14 Repeat steps 4
.1
.4 through 4
.1
.13 for each remaining range, applied and DC Reference Divider value listed in
Table 3
.
Table 3.
Range (VDC) Applied (VDC) DC Ref Div (VDC)
Factor
Limits
(VDC)
Standard
Opt 002
100 m
0
.1
0
.1
4-
100
±0
.00191 m
±0
.00152 m
10 10
10
X 1
±0
.000083
±0
.000045
100 100 100
X 10
±0
.00104
±0
.00065
1000 1000 1000
X 100
±0 .0222 ±0
.0183
4
.1
.15 Disconnect the Calibrator OUTPUT terminals from the Tl HI and LO Input terminals.
4
.1
.16 Connect the DC Reference Standard 10V Output terminals to the DC Voltage Divider INPUT 1
.0 and LOW
terminals
. Connect the DC Voltage Divider OUTPUT HIGH and LOW terminals to TI HI and LO Input terminals,
observing polarity.
4
.1
.17 Manually select the TI 10 VDC Range.
4
.1
.18 Set the DC Voltage Divider to the first setting listed in the DC Divider column of Table 4.
20
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