Measurement Computing Extender 488HS Rev.2.0 - Manual (Page 3)

Table of Contents
Section 1 Introduction 1.1
1.1 Description 1.1
1.2 Available Accessories 1.2
1.3 Specifications 1.2
1.4 Abbreviations 1.4
Section 2 Getting Started ........................................................................................................................................... 2.1
2.1 Inspection .................................................................................................................................................. 2.1
2.2 Extender488/HS Configuration ................................................................................................................. 2.1
2.3 Front Panel Indicators................................................................................................................................ 2.3
2.4 Line Voltage Selection .............................................................................................................................. 2.4
2.5 Hardware Installation................................................................................................................................. 2.6
2.6 Operation ................................................................................................................................................... 2.7
2.7 Speed Considerations ................................................................................................................................ 2.8
Section 3 IEEE 488 Primer.......................................................................................................................................... 3.1
3.1 History ....................................................................................................................................................... 3.1
3.2 General Structure ....................................................................................................................................... 3.1
3.3 Send It To My Address.............................................................................................................................. 3.4
3.4 Bus Management Lines ............................................................................................................................. 3.4
3.4.1 Attention (ATN) .................................................................................................................... 3.4
3.4.2 Interface Clear (IFC) .............................................................................................................. 3.4
3.4.3 Remote Enable (REN) ........................................................................................................... 3.5
3.4.4 End or Identify (EOI)............................................................................................................. 3.5
3.4.5 Service Request (SRQ) .......................................................................................................... 3.5
3.5 Handshake Lines........................................................................................................................................ 3.5
3.5.1 Data Valid (DAV).................................................................................................................. 3.5
3.5.2 Not Ready for Data (NRFD) .................................................................................................. 3.6
3.5.3 Not Data Accepted (NDAC) .................................................................................................. 3.6
3.6 Data Lines 3.7
3.7 Multiline Commands ................................................................................................................................. 3.7
3.7.1 Go To Local (GTL)................................................................................................................ 3.7
3.7.2 Listen Address Group (LAG) ................................................................................................ 3.7
3.7.3 Unlisten (UNL) ...................................................................................................................... 3.7
3.7.4 Talk Address Group (TAG) ................................................................................................... 3.7
3.7.5 Untalk (UNT)......................................................................................................................... 3.7
3.7.6 Local Lockout (LLO)............................................................................................................. 3.8
3.7.7 Device Clear (DCL) ............................................................................................................... 3.8
3.7.8 Selected Device Clear (SDC)................................................................................................. 3.8
3.7.9 Serial Poll Disable (SPD)....................................................................................................... 3.8
3.7.10 Serial Poll Enable (SPE) .................................................................................................... 3.8
3.7.11 Group Execute Trigger (GET) ........................................................................................... 3.8
3.7.12 Take Control (TCT) ........................................................................................................... 3.8
3.7.13 Secondary Command Group (SCG)................................................................................... 3.9
3.7.14 Parallel Poll Configure (PPC) ............................................................................................ 3.9
3.7.15 Parallel Poll Unconfigure (PPU)........................................................................................ 3.9
3.8 More On Service Requests ........................................................................................................................ 3.9
3.8.1 Serial Poll............................................................................................................................... 3.10
3.8.2 Parallel Poll............................................................................................................................ 3.10