Keithley SourceMeter 3A 2420 Service Manual page 12

List of Illustrations
1
Performance Verification
Connections for voltage verification tests.................................... 1-9
Connections for10µA to 1A range current verification tests ..... 1-11
Connections for 3A range current verification tests .................. 1-12
Connections for resistance accuracy verification....................... 1-15
2
Calibration
Voltage calibration test connections............................................. 2-8
10µA to 1A range current calibration test connections.............. 2-10
3A range current calibration test connections............................ 2-12
3
Routine Maintenance
Rear panel .................................................................................... 3-2
4
Troubleshooting
Overall block diagram.................................................................. 4-5
Analog circuitry block diagram ................................................... 4-5
Power supply block diagram........................................................ 4-6
Output state simplified schematic ................................................ 4-7
Digital circuitry block diagram.................................................... 4-9