Fluke 52120A - Page 90

52120A
Users Manual
5-20
81. Set the DMM ‘z’ store to the 100 A shunt resistance value.
82. Turn on the ‘÷z’ store on the DMM.
83. Write the value shown on the DMM in the Measured Current column of Table 5-7.
84. Send the command: :CAL:ADJ? OFFS,0.0000,<measured value>
85. Set the 5720A output to the values in Table 5-7 for the 100 A shunt and 1.0 V dc
and -1.0 V dc adjustment points. Write the values shown on the DMM in the
Measured Current column of Table 5-7. Calculate the average amplitude of the
absolute positive and negative values as given above.
86. Send the command: :CAL:ADJ? GAIN,100.0000,<calculated value>
87. Push S on the 5720A.
88. Push A on the Product.
89. Set the 5720A output to the values in Table 5-7 for the 100 A shunt and 100 mA dc
and -100 mA dc adjustment points.
90. Push M on the 5720A.
91. Push M on the Product.
92. Write the values shown on the DMM in the Measured Current column of Table 5-7.
Calculate the average amplitude of the absolute positive and negative values as
given above.
93. Send the command: :CAL:ADJ? GAIN,100.0000,< calculated value >
94. Push S on the 5720A.
95. Push V on the Product.
96. Set the DMM to the ACV function and the 2V range.
97. Set the 5720A voltage output and frequency to the values in Table 5-7 for the 100 A
shunt and 1 V at 6 kHz adjustment point.
98. Push M on the 5720A.
99. Push M on the Product.
100. Write the value shown in the DMM in the Measured Current column of Table 5-7.
101. Send the command: :CAL:ADJ? FLAT,100.0000,<
measured value>
102. Push S on the Product and the 5720A.
Table 5-7. Product Adjustment Points
Product
Range
A40B Shunt
5720A
Output
Measured
Current (A)
Calculated
Current (A)
Target
Value
Output Off 2A Off – –
2 A (Offset) 2A 0 V dc – 0 A
M+ 2A 2 V dc – –
M- 2A -2 V dc – –
2 A (Gain) M = (M
+
– M
-
)/2 – 2 A
M+ 2A 200 mA dc – –
M- 2A -200 mA dc – –