Keithley TEC SourceMeter 2510, Service Manual, Page: 12 / 120

List of Illustrations
1 Performance Verification
Figure 1-1 Connections for voltage verification tests ............................. 1-7
Figure 1-2 Connections for current verification tests .............................. 1-9
Figure 1-3 Connections for AC resistance verification test .................. 1-11
Figure 1-4 Connections for sensor resistance accuracy verification ..... 1-12
2 Calibration
Figure 2-1 Voltage calibration connections ............................................. 2-9
Figure 2-2 Current and current protection calibration connections ....... 2-11
Figure 2-3 Thermistor and RTD calibration resistor connections ......... 2-12
Figure 2-4 Shorted input calibration connections ................................. 2-13
Figure 2-5 I-SS and V-SS calibration resistor connections ................... 2-17
Figure 2-6 AC ohms calibration connections ........................................ 2-18
3 Routine Maintenance
Figure 3-1 Rear panel .............................................................................. 3-2
4 Troubleshooting
Figure 4-1 Overall block diagram ........................................................... 4-5
Figure 4-2 Block diagram of analog circuits ........................................... 4-6
Figure 4-3 Simplified schematic of class D amplifier ............................. 4-7
Figure 4-4 Simplified schematic of H-bridge output stage ..................... 4-8
Figure 4-5 H-bridge switching and step-down regulator ........................ 4-9
Figure 4-6 Sensor conditioning for 10k
Ω
thermistor ............................ 4-10
Figure 4-7 PID hardware control loop ................................................... 4-11
Figure 4-8 Power supply block diagram ............................................... 4-12
Figure 4-9 Digital circuitry overall block diagram ................................ 4-13
Figure 4-10 Digital control circuits ......................................................... 4-14
2510-902-01 (E - Mar 2010)(Service).book Page 1 Tuesday, March 16, 2010 1:04 PM