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3
Volts and Ohms Measurements
Measurement overview ...............................................................
3-2
Guarding .....................................................................................
3-2
Test circuit leakage ..............................................................
3-2
Input cable leakage and capacitance ...................................
3-3
Volts and ohms measurement procedure ....................................
3-4
V-Drop and I-Source for ohms ............................................
3-6
SCPI programming .....................................................................
3-7
Programming example ........................................................
3-8
Volts and ohms measurement considerations .............................
3-9
Loading effects ....................................................................
3-9
Cable leakage resistance ......................................................
3-9
Input capacitance (settling time) .......................................
3-10
Guarding input cable .........................................................
3-12
Application ...............................................................................
3-14
Capacitor dielectric absorption ..........................................
3-14
4
Amps Measurements
Measurement overview ...............................................................
4-2
Amps measurement procedure ...................................................
4-2
Damping ..............................................................................
4-4
High impedance measurement techniques .................................
4-5
SCPI programming .....................................................................
4-8
Programming example ........................................................
4-9
Amps measurement considerations ............................................
4-9
Input bias current .................................................................
4-9
Voltage burden .....................................................................
4-9
Noise ..................................................................................
4-10
Applications ..............................................................................
4-13
Diode leakage current ........................................................
4-13
Capacitor leakage current ..................................................
4-14
Cable insulation resistance ................................................
4-14
Surface insulation resistance (SIR) ...................................
4-15
5
Coulombs Measurements
Measurement overview ...............................................................
5-2
Auto discharge ............................................................................
5-2
Coulombs measurement procedure ............................................
5-3
SCPI programming .....................................................................
5-5
Programming example ........................................................
5-6
Coulombs measurement considerations .....................................
5-6
Input bias current .................................................................
5-6
External voltage source .......................................................
5-6
Zero check hop and auto discharge hop ..............................
5-7
Application .................................................................................
5-7
Capacitance measurements .................................................
5-7
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...