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VX4380 256-Crosspoint Relay Matrix Module User Manual
2–1
Operating Basics
The VX4380 256-Crosspoint Relay Matrix Module is a VXIbus message-based
instrument and communicates using the VXIbus Word Serial Protocol. The
module is programmed by issuing ASCII characters from the system controller
to the VX4380 via the module VXIbus commander and the VXIbus mainframe
backplane. Refer to the manual for the VXIbus device that will be the VX4380
Module commander for details on the operation of that device.
If the module commander is a Tektronix IEEE-488 Interface Module, refer to the
operating manual for the module and Appendix C: Examples in this manual for
information on how the system controller communicates with the commander
being used.
Functional Overview
The VX4380 256-Crosspoint Relay Matrix Module provides four 4 × 16 2-wire
matrix sections. Each section can be configured to connect either the four rows
or the sixteen columns to the section above or below it to produce up to a
16 × 16 2-wire matrix or a 4 × 64 2-wire matrix.
Power-on
The instrument runs its self test and is ready for programming five seconds after
power-on. The VXIbus Resource Manager can add an additional delay. The
Power LED of each relay module controlled by the Option 01 will be on. The
Failed LED on each of these modules will be off. The default condition of the
module after power-on is listed in the *RST command description. Self-test
failures are described in the *TST command description.
The format and syntax for the command strings are described in the Command
Syntax section. A complete description of each command in alphabetical order is
in the Command Descriptions section.