Model 6485 Instruction Manual
Performance Verification
15-9
6.
Verify current measurement accuracy for each of the currents listed in
For each test point:
•
Make connections to the indicated calibration standard resistor.
•
Select the correct Model 6485 measurement range.
•
Calculate the actual required calibrator voltage: V = IR, where I is the desired
applied current, and R is the actual standard resistor value.
•
Set the calibrator to the calculated voltage.
•
Verify that the Model 6485 current reading is within the reading limits listed in
the table.
7.
Repeat the procedure for negative source currents with the same magnitudes as
those listed in
Table 15-3
Reading limits for 2nA to 2
µ
A ranges
Model
6485
Range
Nominal
Calibrator
Voltage
Calibration
Standard
Resistor
1
Nominal
Applied
Current
Actual
Voltage
2
Model 6485 Current
Reading Limits
(1 Year, 18˚C-28˚C)
2nA
2V
1G
Ω
2.00000nA
______V
1.99160 to 2.00840nA
20nA
2V
100M
Ω
20.0000nA
______V
19.9190 to 20.0810nA
200nA
20V
100M
Ω
200.000nA
______V
199.590 to 200.410nA
2
µ
A
200V
100M
Ω
2.00000
µ
A
______V
1.99690 to 2.00310
µ
A
1
Nominal resistance values shown. Use actual characterized value for calculations.
2
Calculate actual calibrator voltage as follows: V = IR, where I is desired applied current, and R is actual standard resistance value.
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Страница 44: ...1 20 Getting Started Model 6485 Picoammeter Instruction Manual ...
Страница 66: ...3 6 Measurements Model 6485 Picoammeter Instruction Manual ...
Страница 138: ...9 20 Remote Operation Model 6485 Picoammeter Instruction Manual ...
Страница 159: ...11 CommonCommands ...
Страница 164: ...11 6 Common Commands Model 6485 Picoammeter Instruction Manual ...
Страница 165: ...12 SCPISignalOriented MeasurementCommands ...
Страница 190: ...14 12 SCPI Reference Tables Model 6485 Picoammeter Instruction Manual ...
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 ...
Страница 266: ...F 16 IEEE 488 Bus Overview Model 6485 Picoammeter Instruction Manual ...
Страница 267: ...G IEEE 488andSCPI ConformanceInformation ...
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