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number keys, 0-9, +/-). Note that the display adjustment range is within ±10% of the
present range.
9.
After adjusting the display to agree with the DMM reading, press ENTER. The instru-
ment will then display the following:
I-CAL
Press ENTER to Output +0.0000µA
10.
Press ENTER. The Model 6430 will source 0µA and at the same time display the
following:
DMM RDG: +0.000000µA
Use
, ▲, ▼,
, ENTER or EXIT.
11.
Note and record the DMM reading, and then adjust the Model 6430 display to agree
with the actual DMM reading. Note that the display value adjustment limits are within
±1% of the present range.
12.
After adjusting the display value to agree with the DMM reading, press ENTER. The
unit will then display the following:
I-CAL
Press ENTER to Output -1.0000µA
13.
Press ENTER. The Model 6430 will source -1µA and display the following:
DMM RDG: -1.000000µA
Use
, ▲, ▼,
, ENTER or EXIT.
14.
Note and record the DMM reading, and then adjust the Model 6430 display to agree
with the DMM reading. Again, the maximum display adjustment is within ±10% of the
present range.
15.
After adjusting the display value to agree with the DMM reading, press ENTER and
note that the instrument displays:
I-CAL
Press ENTER to Output +0.0000µA
16.
Press ENTER. The Model 6430 will source 0µA and simultaneously display the
following:
DMM RDG: +0.000000µA
Use
, ▲, ▼,
, ENTER or EXIT.
17.
Note and record the DMM reading, and then adjust the display to agree with the DMM
reading. Once again, the maximum adjustment is within ±1% of the present range.
18.
After adjusting the display to agree with the DMM reading, press ENTER to complete
calibration of the present range.
19.
Press EXIT to return to normal display, and then select the 10µA source range use the
EDIT and up RANGE keys. Repeat steps 2 through 18 for the 10µA range.
20.
After calibrating the 10µA range, repeat the entire procedure for the 100µA through
100mA ranges using Table 19-4 as a guide. Be sure to select the appropriate source
range with the EDIT and up RANGE keys before calibrating each range.
NOTE
For temporary calibration without saving new calibration constants, proceed to
"Step 5: Lock out calibration."
Calibration
19-11
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