Keithley 6221 User Manual

Model 6220/6221 Reference Manual Averaging Filter, Math, and Buffer 6-7
Return to Section 6 topics
Figure 6-2
Filter window
A
1
A
1
A
1
A
1
A
2
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
T
9
T
10
Integrated
Time
Window
Violation
1% of range
1% of range
1% of range
1% of range
Voltage
B
A
A
2
A
2
A
2
A
3
A
3
A
3
A
3
A
4
A
4
A
4
A
4
A
4
A
4
A
4
A
4
A
4
A
4
A
5
A
6
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
2
A
2
A
2
A
2
A
3
A
3
A
3
A
3
A
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A
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A
3
A
3
A
3
A
3
A
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A
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A
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A
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A
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A
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A
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A
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A
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A
5
B
5
B
5
B
1
B
1
B
2
B
2
B
2
B
2
B
2
B
2
B
2
B
2
B
1
B
1
B
1
B
1
B
1
B
1
B
4
B
4
B
4
B
4
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
5
B
5
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
1
B
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B
1
B
3
B
3
B
3
B
3
B
3
B
3
A
1
A
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A
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A
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A
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A
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A
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A
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A
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A
1
A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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A
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B
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B
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B
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4
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
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A
1
A
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A
1
A
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A
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A
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A
1
A
1
A
6
A
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A
2
A
3
A
3
A
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A
3
A
3
B
3
B
3
B
3
B
3
B
3
B
3
A
1
Reading
#1
Conversion:
Conversion:
Conversion:
Conversion:
Reading
#1
Reading
#1
Reading
#1
Reading
#2
Reading
#2
Reading
#2
Reading
#2
Reading
#3
Reading
#3
Reading
#4
Reading
#4
Reading
#5
Reading
#5
Reading
#6
Reading
#6
Reading
#7
Reading
#7
Reading
#8
Reading
#8
Reading
#9
Reading
#9
Reading
#10
Reading
#10
Reading
#11
Reading
#11
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
1
A
5
A
5
A
5
A
5
A
5
A
5
A
1
A
2
A
2
A
2
B
2
B
2
B
2
B
2
B
2
B
2
B
2
B
2
Filter Type = Moving
Filter Window = None
Count = 5
Filter Type = Moving
Filter Window = 1%
Count = 5
Filter Type = Repeating
Filter Window = 1%
Count = 5
Filter Type = Repeating
Filter Window = None
Count = 5
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Keithley 6221 Specifications

General

Interface	GPIB, RS-232
Communication Interface	GPIB, RS-232
Current Sourcing Accuracy	±(0.03% of output + 20 pA)
Current Sinking Accuracy	±(0.03% of output + 20 pA)
Output Resolution	100 fA
Output Accuracy	±(0.03% of output + 20 pA)
Power Requirements	100 V to 240 V AC, 50/60 Hz