8
Types of SCPI Messages..............................................................................................................................51
The Message Unit....................................................................................................................................52
Headers....................................................................................................................................................52
Query Indicator ....................................................................................................................................... 52
Message Unit Separator...........................................................................................................................52
Root Specifier..........................................................................................................................................52
Message Terminator................................................................................................................................52
SCPI Data Formats........................................................................................................................................53
Numerical Data........................................................................................................................................53
Suffixes and Multipliers..........................................................................................................................53
Character Data.........................................................................................................................................53
Examples.......................................................................................................................................................54
Programming Voltage and Current..........................................................................................................54
Programming Protection Circuits............................................................................................................54
Programming Units in Auto-Parallel.......................................................................................................54
Changing Outputs by Trigger..................................................................................................................55
Saving and Recalling States.................................................................................................................... 55
Writing to the Display.............................................................................................................................56
Programming Status................................................................................................................................ 56
Programming the Digital I/O Port...........................................................................................................56
System Considerations.................................................................................................................................. 56
Assigning GPIB Address in Programs.....................................................................................................57
Agilent 82335A Driver Considerations...................................................................................................57
National Instruments GPIB Driver Considerations.................................................................................57
BASIC Considerations............................................................................................................................ 57
7. Language Dictionary
Introduction...................................................................................................................................................61
Parameters...............................................................................................................................................61
Related Commands..................................................................................................................................61
Order of Presentation ..............................................................................................................................61
Common Commands...............................................................................................................................61
Subsystem Commands.............................................................................................................................61
Description of Common Commands.............................................................................................................62
*CLS........................................................................................................................................................62
*ESE........................................................................................................................................................62
*ESR?......................................................................................................................................................63
*IDN?......................................................................................................................................................63
*OPC.......................................................................................................................................................64
*OPC?..................................................................................................................................................... 64
*OPT? .....................................................................................................................................................64
*PSC........................................................................................................................................................65
*RCL.......................................................................................................................................................65
*RST .......................................................................................................................................................66
*SAV.......................................................................................................................................................66
*SRE .......................................................................................................................................................67
*STB?......................................................................................................................................................67
*TRG.......................................................................................................................................................68
*TST?......................................................................................................................................................68
*WAI.......................................................................................................................................................68
Description of Subsystem Commands...........................................................................................................69
Calibration Commands..................................................................................................................................71
Display Subsystem........................................................................................................................................ 71
DISP........................................................................................................................................................ 71
DISP:MODE........................................................................................................................................... 71
DISP:TEXT.............................................................................................................................................72