User`s manual

Appendix C
HP E1326B/E1411B Multimeter
Register-Based Programming
About This Appendix
The HP E1326B and HP E1411B 5
1
⁄
2
-Digit Multimeters are register-based
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 Addressing
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.
Appendix C HP E1326B/E1411B Multimeter Register-Based Programming 199