User`s manual

Appendix B
Agilent E1346A Multiplexer Registers
Register Definitions
The 48-Channel Relay Multiplexer Module is a register based device. See
Figure B-1 for register definitions.
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 devices) is
allocated a 64 byte (32 word) block of addresses. The multiplexer uses six
of the 64 addresses allocated.
Figure B-1 shows the register address location within A16. Figure B-2
shows the location of A16 address space in the Agilent E1300/01 mainframe
and Agilent E1406 Command Module.
The Base Address When you are reading or writing to a multiplexer register, a hexadecimal or
decimal register address is specified. This address consists of a A16 base
address plus a register offset or register number.
Figure B-1. E1346A Multiplexer Registers within A16 Address Space.
Appendix B Agilent E1346A Multiplexer Registers 63