Keithley SourceMeter 2400, Service Manual, Page: 41 / 137

2-13 Model 2400 Service Manual
Calibration
2400-902-01 (G - Feb 2006)
7. Press ENTER. The Model 2400 will 1µA and simultaneously display the
following:
DMM RDG: +1.000000 μ A
Use
ß
,
©
,
¹
,
ƒ
, ENTER, or EXIT.
8. Note and record the DMM reading, and then adjust the Model 2400 display to agree
exactly with the actual DMM reading. (Use the up and down arrow keys to select the
digit value; use the left and right arrow keys to choose the digit position.) 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 0.0000 μ A
10. Press ENTER. The Model 2400 will source 0µA and at the same time display the
following:
DMM RDG: +0.000000 μ A
Use
ß
,
©
,
¹
,
ƒ
, ENTER, or EXIT.
11. Note and record the DMM reading, and then adjust the Model 2400 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 -1.0000 μ A
13. Press ENTER. The Model 2400 will source -1µA and display the following:
DMM RDG: -1.000000 μ A
Use
ß
,
©
,
¹
,
ƒ
, ENTER, or EXIT.
14. Note and record the DMM reading, then adjust the Model 2400 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 -0.0000 μ A
16. Press ENTER. The Model 2400 will source -0µA and simultaneously display the
following:
DMM RDG: +0.000000 μ A
Use
ß
,
©
,
¹
,
ƒ
, 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, then select the 10µA source range using the
EDIT and up RANGE keys. Repeat steps 2 through 18 for the 10µA range.