Keithley 2400 Service Manual

List of Illustrations
1 Performance Verification
Figure 1-1 Voltage verification front panel connections .......................... 1-9
Figure 1-2 Current verification connections........................................... 1-11
Figure 1-3 Resistance verification connections...................................... 1-15
2 Calibration
Figure 2-1 Voltage calibration connections.............................................. 2-9
Figure 2-2 Current calibration connections............................................ 2-12
3 Routine Maintenance
Figure 3-1 Rear panel ............................................................................... 3-3
4 Troubleshooting
Figure 4-1 Analog circuit block diagram ................................................. 4-5
Figure 4-2 Power supply block diagram................................................... 4-6
Figure 4-3 Output stage simplified schematic.......................................... 4-7
Figure 4-4 Digital board block diagram ................................................... 4-9

Keithley 2400 Specifications

General

Model	2400
Category	SourceMeter
Voltage Source Range	±200 V
Power Output	20 W
Voltage Measurement Resolution	100 nV
Current Measurement Resolution	10 pA
Resolution	5.5 digits
Interfaces	GPIB, RS-232
Current Source Range	±1A
Current Measurement Range	±1A
Resistance Measurement Range	2 Ω to 200 MΩ
Display	Vacuum Fluorescent Display