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A-6
Specifications
Accuracy calculations
The information below discusses how to calculate accuracy for both measurement and
source functions.
Measurement accuracy
Measurement accuracy is calculated as follows:
Accuracy = ±(% of r offset)
As an example of how to calculate the actual reading limits, assume that you are
measuring 10V on the 20V range. You can compute the reading limit range from one-year
measure voltage accuracy specifications as follows:
Accuracy = ±(% of r offset)
±[(0.015%
×
10V) + 1mV]
±(1.5mV + 1mV)
±2.5mV
Thus, the actual reading range is: 10V± 2.5mV, or from 9.9975 to 10.0025V
Current measurement calculations are performed in exactly the same manner using the
pertinent specifications, ranges, and input signal values.
Source accuracy
Source accuracy calculation is similar, except of course that source specifications are
used. As an example of how to calculate the actual source output limits, assume you are
sourcing 0.7mA on the 1mA source range. You can compute the reading limit range from
source current one-year accuracy specifications as follows:
Accuracy = ±(0.034% of 200nA offset)
±[(0.034%
×
0.7mA) + 200nA)]
±(238nA + 200nA)
±438nA
In this case, the actual current output range is: 0.7mA ±438nA, or from 0.69956mA to
0.70044mA.
Содержание SourceMeter 2425
Страница 1: ...Model 2425100W SourceMeter Service Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...
Страница 3: ...TAIWAN 1FL 85 Po Ai Street Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031...
Страница 15: ......
Страница 16: ...1 PerformanceVerification...
Страница 35: ...1 20 Performance Verification Model 2425 Service Manual...
Страница 36: ...2 Calibration...
Страница 62: ...3 RoutineMaintenance...
Страница 65: ...3 4 Routine Maintenance Model 2425 Service Manual...
Страница 66: ...4 Troubleshooting...
Страница 84: ...5 Disassembly...
Страница 92: ...6 ReplacementParts...
Страница 113: ...6 22 Replacement Parts Model 2425 Service Manual...
Страница 114: ...A Specifications...
Страница 116: ...B CommandReference...
Страница 128: ...C CalibrationPrograms...
Страница 139: ......
Страница 141: ......