Benchtop Measurement and Test
Distributed Measurement and Control
Systems Engineering Software
Perspectives showcases how NI sees what’s next in the world of test and technology.
You can request repair, RMA, schedule calibration, or get technical support. A valid service agreement may be required.
Provides support for NI data acquisition and signal conditioning devices.
Provides support for Ethernet, GPIB, serial, USB, and other types of instruments.
Provides support for NI GPIB controllers and NI embedded controllers with GPIB ports.
We are using a MXI-2 link composed of a NI PXI-8320(LA0) and a NI PXI-8320-VME(LA1) boards.
We are using an interrupt(LEV 5) generated on the VME platform to interrupt a process running on the PXI chassis on a
NI PXI-8196. The interrupt is a software interrupt generated by a Concurrent Technologies VP 101-011 Pentium IV CPU.
The process uses an Visa interrupt handler which sends an event to a thread that processes data sent over the MXI-2 link.
The interrupt seems to install properly and return proper status IDs, etc.
The problem is, when the processes runs for about 20-30 minutes, the driver stops calling the interrupt handler even though
the interrupt is still being generated.
Test applications running the same interrupt code do not fail as long as data is not read using viIn(n), viOut(n) or similiar
functions. The size of the data being moved is small.... about 40 bytes each way on the interrupt occurance. The problem is
Once the interrupts fail, power must be shutdown on the PXI cardcage to get the link to recover.
What do you need our team of experts to assist you with?
We'll be in touch soon!