-10920 error when executing buffered period measurements on a PCI 6602 timer.

[doodledoe@yahoo.com]

I frequently encounter the -10920 NI-DAQ error when I run the C code for single buffered data period measurement .
The error message is "One or more data points may have been lost during buffered period measurements due to speed limitations of the system". I am unable to resolve this error. I have a Win2K environment and am using VC++ to compile and execute the code. Please help.

[bman]

When doing buffered period measurements, the rate at which you can transfer data from the counter is system dependant. To try to get around this there are two things you can try. The first is to set the 'number of counts to read at a time' to a greater number. This way, the 6602 board will use less calls across the PCI bus. If possible, try to limit the number of pulses coming in on the gate that you are using to latch the counts, though in many applications this is not possible.

Make sure that you minimize the PCI bus activity on your computer. This includes, video activity and any network activity along with anything else that is connected to the PCI bus.

Brian