Keithley 3940 Manuals

Manuals and User Guides for Keithley 3940. We have 2 Keithley 3940 manuals available for free PDF download: Operator's Manual, Service Manual

Keithley 3940 Operator's Manual

Keithley 3940 Operator's Manual (127 pages)

Multifunction Synthesizer

Brand: Keithley | Category: Synthesizer | Size: 9.21 MB

Table of Contents

Table of Contents
6
SECTION 1 - General Information
10
Introduction
10
Features
10
Warrantyinformation
11
Manualaddenda
11
Safety Terms and Symbols
11
Unpacking and Repacking
11
Unpacking
11
Operator'smanual
11
Optional Accessories
12
Specifications
12
2 Getting Started

13
- Introduction
  13
- Installation
  13
- Installationlocation
  13
- Fan
  13
- Line Voltage Supply
  14
- Line Voltage Selector Switch
  14
- Line Receptacle Connection
  14
- Linefuse
  14
- Basicoperation
  15
- Frontpanelsummary
  15
- Typical Test Connections
  15
- Figure 2-L Frontpanelsummary
  16
- Operating Examples
  17
3 Operation

19
- Introduction
  19
- Front Panel and Rear Panel Description
  19
- Front Panel Description
  19
- Rearpaneldescription
  30
- Figure 3-2 Rearpanel
  30
- Input and Output Connections
  32
- Inputconnections
  32
- Outputconnections
  33
- Startup
  34
- Operating Procedures
  35
- Setting Parameters Using Numeric Keys
  35
- Setting Parameters with MODIFY
  36
- Errorcodes
  36
- Table 3-2 Sub Synthesizer Amplitude Range
  38
- Unitsconversion
  40
- Frequency Programming
  40
- Amplitude Programming
  41
- DC Offset Programming
  41
- AC Amplitude and DC Offset Relational Restrictions
  42
- Waveform Selection, Square-Wave Duty Factor, and Synchronous Output
  44
- Oscillation Mode and Trigger Source Selection
  46
- Mark, Space, and Phase Parameter Programming
  47
- Figure 3-14 Waveform Examples with Hold Stop Level
  50
- Figure 3-16 Phase Sync Operation
  51
- Synchronousoperation
  52
- Frequency Sweep Operation
  52
- Figure 3-18 Sweep Frequency and Sweep Output
  54
- Figure 3-19 Sweepoperation
  55
- Introduction
  59
- Gpiboverview
  59
- Major GPIB Specifications
  59
4 L

59

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Keithley 3940 Service Manual

Keithley 3940 Service Manual (59 pages)

Multifunction Synthesizer

Brand: Keithley | Category: Synthesizer | Size: 3.53 MB

Table of Contents

Table of Contents
6
SECTION 1 - Performance Verification
10
Introduction
10
Environmental Conditions
10
Linepowervoltage
10
Recommended Test Eqtjipment
10
Frequency and Duty Cycle Accuracy
11
Amplitudeaccuracy
13
Frequency Response (Sine)
15
Table 1-4 Limits for Frequency Response (Sine)
16
Table 1-5 Limits for Frequency Response (Triangle, Sawtooth, Square)
16
Frequency Response (Triangle, Sawtooth, Square
16
Frequency Response (Sub Sine
17
- Total Harmonic Distortion
  17
Table 1-7 Limits for Total Harmonic Distortion
19
Table L-8 Limits for DC Voltage Accuracy
19
Dcvoltageaccuracy
19
SECTION 2 - Principles of Operation
21
Introduction
21
Blockdiagram
21
Controlsection
21
Display and Keyboard Section
21
Trigger Section
21
- Sweepsection
  21
Subsynthesizer
23
Mainsynthesizer
23
Powersupply
23
- Mainsynthesizerdescril?Tion
  23
Main Synthesizer Block Diagram
23
D/Aconverter
23
Squarewavegenerator
23
Amplitude Control
23
Outputamplifier
23
Calibration
23
Figure 2-2 Main Synthesizer Block Diagram
24
Figure 2-3 Frequency Synthesizer Address Generator Diagram
25
Synthesizer Operating Principles
25
Figure 2-4 Address Generator Waveform
26
Figure 2-5 Waveform Memory and D/A Converter
26
SECTION 3 - Service Information
27
Introduction
27
Linefusereplacement
27
Calibration
27
Linepower
28
Cover Removal
28
Table 3-2 Recommended Test Equipment for Calibration
28
Calibrationprocedures
32
Figure 3-4 Sub Synthesizer Output Connections to Model 197A DMM
32
Figure 3-5 Main Synthesizer Output Connections to Timer/Counter
33
Coverreplacement
34
Figure 3-7 DMM Connections to DC OFS and GND Test Points
34
Fanfiltercleaning
35
Rechargeable Battery Replacement
35
Repair
35
Factory Service
35
Powersupplytestpoints
35
- Figure 3-8 Power Supply Test Points
  36
- Board-Levelrepair
  37
Replaceableparts
37
- Partslist
  37
- Orderingparts
  37
- Table 3-3 Board Level Repair Summary
  37
- Table 3-4 Replaceable Parts
  37

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