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About This Appendix
Register Addressing
Appendix C
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HP E1326B/E1411B Multimeter
Register-Based Programming
The HP E1326B and HP E1411B 5
modules which do not support the VXIbus word serial protocol. When a
SCPI command is sent to the multimeter, the HP E1406A Command
Module (Series C) or HP E1300/01 Mainframe (Series B) parses the
command and programs the multimeter at the register level.
Register-based programming is a series of reads and writes directly to the
multimeter registers. This increases throughput speed since it eliminates
command parsing and allows the use of an embedded controller. Also, if
slot 0 and resource manager functionality are provided by the embedded
controller, use of the command module is not required.
This appendix contains the information you need for register-based
programming. The contents include:
•
Register Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 199
•
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 203
•
Program Timing and Execution. . . . . . . . . . . . . . . . . . . . . . . Page 210
•
Register Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 217
•
Programming Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 220
•
Useful Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 262
Register addresses for register-based devices are located in the upper 25%
of VXI A16 address space. Every VXI device (up to 256) is allocated a 64
byte block of addresses. With seven registers, the HP E1326B/E1411B
Multimeters use seven of the 64 addresses allocated.
Figure C-1 shows the register address location within A16. Figure C-2
shows the location of A16 address space in the HP E1406A Command
Module and HP E1300A/01A Mainframe.
HP E1326B/E1411B Multimeter Register-Based Programming
Appendix C
⁄
1
-Digit Multimeters are register-based
2
199
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