Keithley 228 Manuals

Manuals and User Guides for Keithley 228. We have 1 Keithley 228 manual available for free PDF download: Instruction Manual

Keithley 228 Instruction Manual (149 pages)

Voltage/Current Source

Brand: Keithley | Category: Portable Generator | Size: 8 MB

Warranty
3
Specifications
5
Table of Contents
6
List of Illustrations
9
List of Tables
11
SECTION L-GENERAL INFORMATION
12
Introduction
12
Features
12
Using the Instruction Manual
13
Warranty Information
13
Manualaddenda
13
Safetysymbolsandterms
13
Specifications
13
Unpacking and Inspection
13
Accessories
14
Safetypr~Autions
16
Generaloperatingprocedure
16
General Operation Notes
18
Standbymodenotes
19
Section 3-Front Panel Operation
20
Introduction
20
Preparationfor Use
20
Line Voltage Selection
20
Fusechecks
20
Powerup
20
Environmental Conditions
21
Operatinginstructions
21
Front Paneldescription
25
Data Group
29
Rearpaneldescription
32
Quickdisconnect Board
34
Frontpanelprograms
36
Program1Copy
36
Program2Sink
37
Program3Leee
37
Graph of Operation for External Modulation
38
Resistiveloads
42
Reactiveloads
42
Inductiveloads
42
Limiting Inductive Reaction Voltage
43
Capacitanceloads
44
Loadregulation
44
Capacitive Load Connections
44
Operating Examples
45
Example 1: Lo.oov, Lo.ooaoutput
45
Example2:100V,1Aoutput
46
Output Waveform
54
Data Logging Configuration
57
External Modulation
57
Typical Modulated Output
58
Ramp Characteristics
59
Power Transistor Test Set up
59
Automated Test Set up for Fets
61
Output Noise
61
Noise Sources
61
Noise Reduction Techniques
62
Software Considerations
63
Interface BASIC Programming Statements
63
Ieee-488 Bus Lines
66
Bus Structure
66
System Set up Procedure
67
Bus Commands
68
Contact Assignments
68
Typical Bus Connector
68
Uniline Commands
69
Universal Commands
69
Front-Panel Error Messages
91
5-L 5.5 Performance Verification Procedure
93
Initial Conditions
93
Voltage Mode Verification (IV, 1OV and 1OOV)
93
Output Current Verification
94
Output Voltage Configuration
94
Section B-Theory of Operation
95
Power Supply
95
Linear Power Supply 6-L
95
Switching Power Supply
96
Analog Control
96
Voltage Sensing
98
Current Sensing
98
Output Amplifier
99
Digital Board
100
Display Board
100
Display and Keyboard
101
Section 'I-Maintenance
103
Introduction
103
Fusereplacement
103
Line Voltage Selection
103
Disassembly
104
Removing the Top and Bottom Covers
104
Removetherearpanel
105
Heat Sink Assembly
105
Troubleshooting
112
Recommended Test Equipment
112
Digitalselftest
112
Handshakesequence
114
Calibration
115
Recommendedtest Equipment
115
Environmentalconditions
115
Topcoverremoval
115
Testsetup
116
Reference Adjustment
116
Current Calibration
116
Special Handling of Static Sensitive Devices
117
Introduction
118
Replaceableparts
118
Ordering Information
118
Factory Service
118
Schematic Diagram and Component Location Drawings
118
Parts List
141

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