Howdy deepi,
I'd like to know a little bit more about how you're connecting to your instrument (GPIB, serial, USB, Ethernet). NI has a great program called Measurement and Automation Explorer that can check low level functionality (*IDN?) of your device to ensure hardware functionality. For general help with LabVIEW, check out
Instrument Control in LabVIEW. For some more instrument specific help, try
GPIB,
USB,
Serial, or
Ethernet Instrument Control. This should get you going.
Sincerely,
Chris G in AE