VT1433B User's Guide

Using the VT1433B

Once it has done this interrupt, the module will not do any more VME interrupts until re-enabled with hpe1432_reenableInterrupt. Normally, the last thing a host computer’s interrupt handler should do is call hpe1432_reenableInterrupt.

Events that would have caused an interrupt, but which are blocked because hpe1432_reenableInterrupt has not yet been called, will be saved. After hpe1432_reenableInterrupt is called, these saved events will cause an interrupt, so that there is no way for the host to “miss” an interrupt. However, the module will only do one VME interrupt for all of the saved events, so that the host computer will not get flooded with too many interrupts.

For things like “HPE1432_IRQ_BLOCK_READY”, which are not events but are actually states, the module will do an interrupt after hpe1432_reenableInterrupt only if the state is still present. This allows the host computer’s interrupt handler to potentially read multiple scans from a VT1433B module and not get flooded with block ready interrupts after the fact.

Host Interrupt Setup

This is a summary of how to set up a VT1433B interrupt:

￿Look at the Resource Manager to find out which VME interrupt lines are available.

￿Tell the VT1433B module to use the a VME interrupt line found in step one, using hpe1432_setInterruptPriority.

￿Set up an interrupt handler routine, using hpe1432_callBackInstall. The interrupt handler routine will get called when the interrupt occurs.

￿Set up interrupt mask in the VT1433B module, using hpe1432_setInterruptMask.

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VXI VT1433B manual Host Interrupt Setup

VT1433B specifications

The VXI VT1433B is a versatile and sophisticated instrument designed for testing and measurement applications, particularly in the realm of telecommunications and electronics. Designed with the needs of engineers in mind, it brings a comprehensive set of features and technologies that enable accurate and efficient performance.

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