Keithley 6514

List of Illustrations
1 Getting Started
Figure 1-1 Model 6514 front panel .......................................................... 1-5
Figure 1-2 Model 6514 rear panel ........................................................... 1-8
2 Measurement Concepts
Figure 2-1 Input connector configurations .............................................. 2-4
Figure 2-2 Maximum input levels ........................................................... 2-5
Figure 2-3 Basic connections for unguarded measurements ................... 2-6
Figure 2-4 Shielding for unguarded measurements ................................. 2-7
Figure 2-5 Basic connections for guarded measurements ....................... 2-8
Figure 2-6 General purpose test fixture ................................................... 2-9
Figure 2-7 Capacitor test circuit without protection .............................. 2-11
Figure 2-8 Capacitor test circuit with protection ................................... 2-11
Figure 2-9 Floating measurements ........................................................ 2-12
Figure 2-10 Equivalent input impedance with zero check enabled ......... 2-14
3Volts and Ohms Measurements
Figure 3-1 High-impedance voltage measurements ................................ 3-3
Figure 3-2 Connections for unguarded volts and ohms ........................... 3-5
Figure 3-3 Connections for guarded volts and ohms ............................... 3-6
Figure 3-4 Meter loading ......................................................................... 3-9
Figure 3-5 Effects of input capacitance ................................................. 3-11
Figure 3-6 Settling time ......................................................................... 3-12
Figure 3-7 Unguarded input cable ......................................................... 3-12
Figure 3-8 Guarded input cable ............................................................. 3-13
Figure 3-9 Measuring dielectric absorption ........................................... 3-15
4 Amps Measurements
Figure 4-1 Connections for amps ............................................................ 4-4
Figure 4-2 High impedance current measurements ................................. 4-5
Figure 4-3 Floating current measurements .............................................. 4-7
Figure 4-4 Voltage burden considerations ............................................. 4-10
Figure 4-5 Source resistance and capacitance ....................................... 4-11
Figure 4-6 Connections; diode leakage current test .............................. 4-13
Figure 4-7 Connections; capacitor leakage current test ......................... 4-14
Figure 4-8 Connections; cable insulation resistance test ....................... 4-14
Figure 4-9 Connections; surface insulation resistance test .................... 4-15