How quickly can I send two write commands using ibwrt().

[Mark12]

I am sending consecutive commands to a device using ibwrt(). If I send the commands 200ms or more apart ibwrt returns very quickly. However if I try to call ibwrt more often, it begins taking up to 50ms to return to my application. Does anyone know what might be going on.

[Randy Solomonson]

There is probably some sort of synchronization issue. It might be necessary to consider writing larger amounts of data and less frequently. Another operating system may handle this problem differently. Also, be sure the latest driver is being used.

Randy Solomonson
Applications Engineer
National Instruments