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GPIB-140 Series
National Instruments GPIB-140 Series Manuals
Manuals and User Guides for National Instruments GPIB-140 Series. We have
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National Instruments GPIB-140 Series manual available for free PDF download: User Manual
National Instruments
GPIB-140 Series
User Manual
National Instruments GPIB-140 Series User Manual (55 pages)
Brand:
National Instruments
| Category:
Extender
| Size: 3.14 MB
Table of Contents
Table of Contents
8
About this Manual
11
Organization of this Manual
11
Conventions Used in this Manual
12
Related Documentation
13
Customer Communication
13
Chapter 1 Introduction
14
What Your Kit Should Contain
14
Optional Equipment
14
Hardware Description
15
Figure 1-1. Typical Extension System (Physical Configuration)
15
Figure 1-2. Typical Extension System (Logical Configuration)
15
Chapter 2 Connection
17
Configure the DIP Switch
17
Connect the Hardware
17
Step 1. Connect the Cables
17
Figure 2-1. DIP Switch Default Setting
17
Step 2. Switch on Your GPIB Extender
18
Figure 2-2. GPIB Extenders with Fiber Optic Cable Connected
18
Optional Self-Test
19
Figure 2-3. GPIB Extender Configured for Optional Self-Test
19
Chapter 3 Configuration and Operation
20
Data Transfer Modes
20
Unbuffered Mode
20
Buffered Mode
20
Setting the Data Transfer Mode
20
HS488 Mode
21
HS488 Disabled
21
HS488 Enabled
21
Figure 3-1. Switch Setting for Buffered Data Transfer Mode
21
Setting the HS488 Mode
22
Parallel Poll Response (PPR) Modes
22
Figure 3-2. Switch Setting for HS488 Mode (Enabled)
22
Choosing the PPR Mode
23
Immediate PPR Mode
23
Latched PPR Mode
23
Setting the PPR Mode
24
Operating the Extension System
24
Power Led
24
Figure 3-3. Switch Setting for Immediate Parallel Poll Response (PPR) Mode
24
Link Led
25
Error Led
25
Chapter 4 Theory of Operation
26
Message Interpreter Layer
27
Figure 4-1. GPIB Extender Block Diagram
27
Packet Translation Layer
28
Link Management Layer
28
Parallel-To-Serial Translation Layer
28
Physical Layer
28
Appendix A Operation of the GPIB
29
Types of Messages
29
Talkers, Listeners, and Controllers
29
The Controller-In-Charge and System Controllers
30
GPIB Signals and Lines
30
Data Lines
30
Handshake Lines
31
Interface Management Lines
31
Table A-1. GPIB Handshake Lines
31
Table A-2. GPIB Interface Management Lines
31
Physical and Electrical Characteristics
32
Figure A-1. GPIB Connector and the Signal Assignment
32
Configuration Requirements
33
Figure A-2. Linear and Star System Configuration
33
Appendix B Specifications
35
Table B-1. System Configuration
35
Table B-2. Performance Characteristics
35
Table B-3. Operation Characteristics
36
Table B-4. Electrical Characteristics
36
Table B-5. Environmental Characteristics
36
Table B-6. Physical Characteristics
37
Appendix C Introduction to HS488
38
Objectives of HS488
38
Fast Transfer Rates
38
Compatibility with Existing IEEE 488.1 Devices
38
No Additional Software Overhead-Automatic HS488 Detection
38
No Changes to the IEEE 488.2 Standard
38
No Added Cabling Restrictions Beyond IEEE 488.1
39
IEEE 488.1 Requirements for Higher Speed Operation (T1 Delay ≥ 350 Ns
39
Additional HS488 System Requirements
39
Sequence of Events in Data Transfers
39
Figure C-1. IEEE 488.1 and HS488 Transfers
40
Case 1: Talker and Listener Are HS488 Capable
41
Figure C-2. Talker and Listener Are HS488 Capable
41
Case 2: Talker Is HS488 Capable, but Listener Is Not HS488
42
Capable
42
Figure C-3. Talker Is HS488 Capable, but Listener Is Not HS488 Capable
42
Case 3: Talker Is Not HS488 Capable, but Listener Is HS488
43
Capable
43
System Configuration
43
Appendix D
44
Multiline Interface Messages
44
Appendix E Customer Communication
47
Glossary
53
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