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18-14
Performance Verification
7.
Verify current measurement accuracy for each of the currents listed in Table 18-4. For
each test point:
•
Make connections to the indicated calibration standard resistor.
•
Select the correct Model 6514 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 Model 6514 current reading is within the reading limits listed in the table.
8.
Repeat the procedure for negative source currents with the same magnitudes as those
listed in Table 18-4.
Table 18-4
20pA-2µA range current measurement accuracy reading limits
Model
6514 range
Nominal
calibrator
voltage
Calibration
standard
resistor
1
Applied current
Actual
voltage
2
Model 6514 amps reading
limits (1 Year, 18˚C-28˚C)
20pA
2V
100G
Ω
20.0000pA
______V
19.7970 to 20.2030pA
200pA
2V
10G
Ω
200.000pA
______V
197.995 to 202.005pA
2nA
2V
1G
Ω
2.00000nA
______V
1.99570 to 2.00430nA
20nA
2V
100M
Ω
20.0000nA
______V
19.9595 to 20.0405nA
200nA
20V
100M
Ω
200.000nA
______V
199.595 to 200.405nA
2
µ
A
200V
100M
Ω
2.00000
µ
A
______V
1.99790 to 2.00210
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.
Summary of Contents for 6514
Page 203: ...14 CommonCommands...
Page 207: ...15 SCPISignalOriented MeasurementCommands...
Page 235: ...18 PerformanceVerification...
Page 254: ...19 Calibration...
Page 274: ...20 RoutineMaintenance...
Page 278: ...A Specifications...
Page 282: ...B StatusandErrorMessages...
Page 288: ...C GeneralMeasurement Considerations...
Page 294: ...D DDCEmulationCommands...
Page 299: ...E ExamplePrograms...
Page 306: ...F IEEE 488BusOverview...
Page 320: ...G IEEE 488andSCPI ConformanceInformation...
Page 324: ...H CalibrationOptions...