User`s manual

Appendix B

Agilent E1351A/53A Register-Based

Programming

About This Appendix

The Agilent E1351A and Agilent E1353A FET and Thermocouple FET

Multiplexers are register-based modules which do not support the VXIbus

word serial protocol. When a SCPI command is sent to the multiplexer, the

Agilent E1406A Command Module (Series C) or Agilent E1300B/E1301B

Mainframe (Series B) parses the command and programs the multiplexer at

the register level.

multiplexer registers. This increases throughput speed since it eliminates

command parsing and allows the use of an embedded controller. Also, if

slot 0, the resource manager, and the computer (GPIB) interface are

provided by other devices, a C-size system can be downsized by removing

the command module.

This appendix contains the information you need for register-based

programming. The contents include:

• Register Addressing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 81

• Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 84

• Register Bit Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 86

• Executing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 90

• Register-Based Programming for Maximum

Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 93

of VXIbus A16 address space. Every VXIbus device (up to 256 devices) is

allocated a 32 word (64 byte) block of addresses. The Agilent

E1351A/E1353A multiplexers use eight two-byte registers of the 64

addresses (32 word registers) allocated.

Figure B-1 shows the register address location within A16 as it might be

mapped by an embedded controller. Figure B-2 shows the location of A16

address space in the Agilent E1300B/E1301B Mainframe and Agilent

E1405/06A Command Module.

Appendix B Agilent E1351A/53A Register-Based Programming 81