Hi I am currentlytrying to communicate with the HP34401A Multimeter.I cant seem to talk with the device with out any errors.I have downloaded the HP34401 instrument on the NI website and have got the connection going. hp34401_init (Description, VI_FALSE, VI_FALSE,&viSession); if (viSession==VI_NULL) { ErrorCheck(Status); } else { hp34401_reset (viSession); hp34401_func (viSession,hp34401_FUNC_VOLT_DC); hp34401_voltDcNplc (viSession, hp34401_NPLC_100_0); hp34401_autoZero (viSession, VI_TRUE); } Can someone please help me out by showing how to start communication, any source code will be very helpful ? Thanks.

LabWindows/CVI

Hm,

I am not a native speaker, but I would imagine that power line cycle should be set either to 50 or 60?

Wolfgang

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