Hey Agorden, You didn't mention how you are communicating to your instruments, but I am assuming you are using GPIB or serial. If so, the first place to check is with NI-SPY. This will let you know what is being communicated in the back ground. You should be able to see with NI-SPY whether or not you instrument is transmitting the correct data, or if your program is parsing the data correctly.
Here is a link to more information about NI-SPY. http://zone.ni.com/devzone/conceptd.nsf/webmain/C31BC5FB34DBC0EF86256ADF007B8A47?opendocument http://www.ni.com/support/vxi/spy/spy.htm Just open up NI-SPY and run it while your program is running. You should be able to see all data that is being read and be able to see if it is changing. I hope this helps out. JoshuaP National Instruments
