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Programming Manual You should use this ProgrammingManual together with thePM6680B/1/5 Operators Manual. That manual contains specificationsfor the Counter and explanations of the possibilities and limitations of the different measuring functions. Sections The chapters in this manual are di- vided into three sections aimed at dif- ferent levels of reader knowledge. The ‘General’ Section, which can be disregarded by the users who know the IEEE-488 and SCPI standards: – Chapter 2 Bus Commands for the Benchtop User gives bus com- mands for the front panel keys. – Chapter 3 Introduction to SCPI explains syntax data formats, sta- tus reporting, etc. The Practical Section of this manualcontains: – Chapter 4, Programming Exam- ples, with examples of typical pro- grams for a wide variety of appli- cations. These programs are writ- ten in GW-basic and C. This Manual The ‘Programmers Reference’ Sec- tion of this manual contains: – Chapter 5, Instrument Model ex- plains how the instrument looks from the bus. This instrument is not quite the same as the one used from the front panel. – Chapter 6 Using the Subsystems explains more about each subsys- tem. – Chapter 7, How to Measure Fast is a set of measuring situations which the user is often confronted with when programming a Counter. This chapter also contains infor- mation about how to use the more complex subsystem. – Chapter 8, Error Messages con- tains a list of all error messages that can be generated during bus control. – Chapter 9, Command Reference, This chapter gives complete infor- mation on all commands. The sub- systems and commands are sorted alphabetically.