Keithley 2701, Service Manual

Page: 12 / 168

List of Illustrations
1 Performance Verification
Figure 1-1 Connections for Model 2701 DC volts verification ............... 1-8
Figure 1-2 Connections for Model 2701 AC volts verification .............. 1-10
Figure 1-3 Connections for Model 2701 DC current verification .......... 1-12
Figure 1-4 Connections for Model 2701 AC current verification .......... 1-13
Figure 1-5 Connections for Model 2701 resistance verification
(100
ΩΩ
to 10M
Ω
ranges) ............................................... 1-14
Figure 1-6 Connections for Model 2701 resistance verification
(100M
Ω
range) ................................................................ 1-15
Figure 1-7 Connections for Model 2701 frequency verification ............ 1-18
Figure 1-8 Connections for Model 7700 DC volts verification ............. 1-19
Figure 1-9 Connections for Model 7700 AC volts verification .............. 1-20
Figure 1-10 Connections for Model 7700 DC current verification .......... 1-22
Figure 1-11 Connections for Model 7700 AC current verification .......... 1-24
Figure 1-12 Connections for Model 7700 resistance verification
(100
Ω
to 10M
Ω
ranges) .................................................. 1-25
Figure 1-13 Connections for Model 7700 resistance verification
(100M
Ω
range) ................................................................ 1-27
Figure 1-14 Connections for Model 7700 thermocouple temperature
verification ....................................................................... 1-29
Figure 1-15 Connections for Model 7700 frequency verification ............ 1-31
Figure 1-16 Connections for Model 7700 ratio and average verification 1-32
2 Calibration
Figure 2-1 Low thermal short connections .............................................. 2-7
Figure 2-2 Connections for DC volts and ohms calibration .................... 2-8
Figure 2-3 Connections for DC and AC amps calibration ..................... 2-10
Figure 2-4 Connections for AC volts calibration ................................... 2-11
Figure 2-5 Function generator connections for manufacturing
calibration ........................................................................ 2-20
3 Routine Maintenance
Figure 3-1 Power module ......................................................................... 3-3
Figure 3-2 Front terminal AMPS fuse ..................................................... 3-4
Figure 3-3 Model 7700 amps fuses .......................................................... 3-5
4 Troubleshooting
Figure 4-1 Power supply block diagram .................................................. 4-5
Figure 4-2 Digital circuitry block diagram .............................................. 4-7
Figure 4-3 Analog circuitry block diagram ........................................... 4-11
Figure 4-4 Ohms open-lead sense detection block diagram .................. 4-12