Agilent Technologies E1418A User Manual Page 115

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Appendix B
Agilent E1418A Register-Based Programming
The Agilent E1418A 8/16 Channel D/A Module is a register-based module. It
does not support the VXIbus word serial protocol. The module may be
controlled at the register level or, with appropriate drivers, controlled by higher
level commands.
The SCPI commands described in this manual are parsed by an Agilent E1405/
E1406 Command Module and turned into appropriate register reads and writes.
The same is true for Agilent Compiled SCPI programming in the C
language. In this case, SCPI commands are pre-processed by C-SCPI and
replaced with function calls to driver libraries that perform register-based
programming.
Note If SCPI commands (or other high level driver-based commands) are used to
program this module with a command module, then register programming is
not recommended. The SCPI driver maintains an image of the module state.
The driver will be unaware of changes made to the module by register access.
Register-based programming is a series of reads and writes directly to the
module registers. This appendix contains the information you need for
register-based programming. The contents of this appendix are:
Addressing the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 114
Reset and Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 119
Register Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 120
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 126
Register Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 148
Appendix B Agilent E1418A Register-Based Programming 113
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