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CONTENTS
Chapter Page
6.5 Handshake Lines...................................................................................57
6.5.1 Data Valid (DAV).......................................................................57
6.5.2 Not Ready For Data (NRFD) ....................................................57
6.5.3 Not Data Accepted (NDAC) .....................................................57
6.6 Data Lines..............................................................................................58
6.7 Multiline Commands ............................................................................58
6.7.1 Go To Local (GTL) ...................................................................58
6.7.2 Listen Address Group (LAG)....................................................58
6.7.3 Unlisten (UNL) .........................................................................59
6.7.4 Talk Address Group (TAG) ......................................................59
6.7.5 Untalk (UNT)............................................................................59
6.7.6 Local Lockout (LLO)................................................................59
6.7.7 Device Clear (DCL)...................................................................59
6.7.8 Selected Device Clear (SDC) ....................................................59
6.7.9 Serial Poll Disable (SPD) ..........................................................59
6.7.10 Serial Poll Enable (SPE)..........................................................59
6.7.11 Group Execute Trigger (GET)...............................................59
6.7.12 Take Control (TCT)................................................................60
6.7.13 Secondary Command Group (SCG) ......................................60
6.7.14 Parallel Poll Configure (PPC).................................................60
6.7.15 Parallel Poll Unconfigure (PPU)............................................60
6.8 More on Service Requests.....................................................................60
6.8.1 Serial Poll ...................................................................................61
6.8.2 Parallel Poll................................................................................61
7. Theory of Operation and Board Layout.......................................................62
7.1 Theory of Operation.............................................................................62
7.2 Board Layout .........................................................................................63
Appendix A: Sample Dumb-Terminal Program...............................................65
Appendix B: Character Codes and IEEE Multiline Messages .........................66
Index...................................................................................................................68