I-14
Applications Guide
Model 6485 Picoammeter Instruction Manual
Figure I-11
Transient Voltage
When it is necessary to up-range during auto-ranging operation, multiple ranges may be
crossed to find the correct range. The duration of the transient in
extended in this case, but the magnitude will not increase significantly.
Down-range voltage transients are smaller
With the exception of the change from the 2mA range to the 200
µ
A range, the down-range
voltage transient is significantly smaller than the up-range transients.
shows
the voltage presented at the input, measured during a change from 20
µ
A to 2
µ
A with a
2
µ
A input current. The vast difference from the previous figures in voltage scale and time
scale should be noted. Note also that the current limiting resistor will be that of the 2
µ
A
range, 100 times greater than upranging across the same boundary. The voltage transient
of the 2mA to 200
µ
A change with a 200
µ
A input signal is similar to the up-range
response, with the exception that the current limiting R will be 100 times greater in the
case of down-ranging.
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Страница 44: ...1 20 Getting Started Model 6485 Picoammeter Instruction Manual ...
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Страница 138: ...9 20 Remote Operation Model 6485 Picoammeter Instruction Manual ...
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Страница 214: ...16 14 Calibration Model 6485 Instruction Manual ...
Страница 219: ...A Specifications ...
Страница 221: ...B StatusandErrorMessages ...
Страница 227: ...C GeneralMeasurement Considerations ...
Страница 233: ...D DDCEmulationCommands ...
Страница 247: ...E ExamplePrograms ...
Страница 250: ...E 4 Example Programs Model 6485 Picoammeter Instruction Manual ...
Страница 251: ...F IEEE 488BusOverview ...
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Страница 267: ...G IEEE 488andSCPI ConformanceInformation ...
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