Keithley 6220 Reference Manual page 142

5-22 Delta, Pulse Delta, and Differential Conductance
Figure 5-7
Delta measurement technique
1st Delta Reading
2nd Delta Reading
The following equation can be used to calculate any Delta reading:
Delta
Where:
Example – Calculate the 21st Delta reading:
X, Y, and Z are the three A/D measurements for the 21st Delta reading.
n = Delta Cycle Number – 1
= 21 – 1
= 20
Therefore:
Delta
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DELTA
Reading
⎛ ⎞
X 2Y – + Z n
• – ( )
-------------------------- -
= 1
⎝ ⎠
4
X, Y and Z are the three A/D measurements for a Delta reading.
n = Delta Cycle Number – 1
⎛ ⎞
X 2Y – + Z 20
• – ( )
-------------------------- -
= 1
⎝ ⎠
4
X 2Y – + Z
= -------------------------- -
4
Return to
Model 6220/6221 Reference Manual
DELTA
Reading
1st 3rd
DELTA
Reading
2nd
〈
3rd Delta Reading
〈
4th Delta Reading
Section 5 topics
DELTA
Reading
4th
〈
〈