The Tektronix VX4353 Relay Switching Module is a printed circuit board for use in a mainframe conforming to the VXIbus specifications, such as the VX1400 C size mainframe used in the Tektronix / CDS IAC system. The Module provides 32 independently controlled single-pole, single-throw relays. Individual relays or all relays can be opened or closed under program control.
The amount of delay between successive operations and the relay closure dwell time can be controlled by software. Delay times from 0 to 65535 milliseconds can be selected. The module is programmed by transmitting ASCII characters from the system controller through the VXI system to the module.
The modules commands also provide access to system information. The position of the individual relay (open or closed) may be read back by the system controller and is also displayed by LED s on the module s front panel. Other commands return the programmed time delay and identification information about the module.
