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Model 2400 Service Manual 2-10

Calibration

2400-902-01 (G - Feb 2006)

13. Press ENTER. The Model 2400 will source -200mV and display the following:

DMM RDG: -200.0000mV

Use ß, ©, ¹, ƒ, ENTER, or EXIT.

14. Note and record the DMM reading, and 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:

V-CAL

Press ENTER to Output -000.00mv

16. Press ENTER. The Model 2400 will source -0mV and simultaneously display the

following:

DMM RDG: +000.0000mV

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 2V source range. Repeat

steps 2 through 18 for the 2V range.

20. After calibrating the 2V range, repeat the entire procedure for the 20V and 200V ranges

using

Table 2-3 as a guide. Be sure to select the appropriate source range with the EDIT

and RANGE keys before calibrating each range.

21. Press EXIT as necessary to return to normal display.

Keithley 2400 Service Manual

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