Keithley 7074 Manuals

Manuals and User Guides for Keithley 7074. We have 1 Keithley 7074 manual available for free PDF download: Instruction Manual

Keithley 7074 Instruction Manual

Keithley 7074 Instruction Manual (109 pages)

General Purpose Eight 1x12 Multiplexer Card

Brand: Keithley | Category: Multiplexer | Size: 4.91 MB

Table of Contents

Table of Contents
10
SECTION 1 - General Information
16
Introduction
16
Features
16
Warranty Information
16
Manual Addenda
16
Safety Symbols and Terms
16
Specifications
17
Unpacking and Inspection
17
Instruction Manual
17
Repacking for Shipment
17
Optional Accessories
17
BANK Receptacle Accessories
17
ROW Receptacle Accessories
18
SECTION 2 - Operation
19
Introduction
19
Handling Precautions
19
Environmental Considerations
19
Multiplexer Card Configuration
19
Rear Panel
19
Figure 2-3 Model 7074 Card Showing Jumper Locations
22
Backplane Connection Jumpers
25
Switching Conþgurations
25
Figure 2-9 Guarded Switching
26
Figure 2-10 Unguarded Switching
26
Connection Methods
29
Figure 2-14 Connections Using Mass Terminated Cables
31
Figure 2-18 Cable Preparation
36
Wiring Receptacles (Models 7074-MTR and 7078-MTR)
43
Figure 2-27 ROW A-H Receptacle Connector
45
Typical Connection Schemes
46
Figure 2-28 Single Card System Example
46
Multiplexer Programming
51
Banks and Rows
51
IEEE-488 Bus Programming
51
Measurement Considerations
52
Path Isolation
52
Figure 2-33 Voltage Attenuation by Path Isolation Resistance
52
Magnetic Fields
53
Electromagnetic Interference (EMI)
53
Ground Loops
53
Figure 2-34 Power Line Ground Loops
53
Keeping Connectors Clean
54
Shielding
54
Guarding
54
Figure 2-36 Shielding Example
54
Multiple Card Considerations
55
AC Frequency Response
55
Figure 2-37 Guarded Circuit
55
SECTION 3 - Applications
61
Introduction
61
Resistor Testing
61
2-Wire Resistance Tests
61
4-Wire Resistance Tests
62
Transistor Testing
64
Current Gain Tests
64
Common-Emitter Characteristics Tests
66
Testing with Matrix Cards
67
Resistivity Tests
67
Introduction
71
Handling and Cleaning Precautions
71
Relay Test Program Setup
71
Recommended Equipment
72
Connections
72
Running the Test
72
Performance Verification
72
Environmental Conditions
73
Recommended Test Equipment
73
Performance Record
74
Initial Preparation
74
Path Resistance Tests
75
Offset Current Tests
79
Contact Potential Tests
80
Path Isolation Tests
81
Differential and Common Mode Isolation Tests
82
Disassembly
86
Troubleshooting
87
Recommended Equipment
87
Using the Extender Card
87
Relay Replacement Precautions
89
Principles of Operation
89
Block Diagram
89
ID Data Circuits
90
Relay Control
90
Power-On Safeguard
91
SECTION 5 - Replaceable Parts
92
Introduction
92
Parts Lists
92
Ordering Information
92
Factory Service
92

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