LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

buffer overflow problem

hi
i am using labview 8.6 with DAQ device ni-USB 6212. i am aquiring a Analog squarepulse of 0.5 Hz continuasly. i am having a problem with buffer overflow,  it is skiping one complete periode every after few cycles. can any body have some idea how i gonna fix this problem how to increase the buffer size? or is there any other solution?, bye the way i am using DAQ assitance express vi in labview to aquire the waveform.
 let me explain the situation a bit more, what i am doing in this vi is generating a digital pulse and then aquiring that pulse back on Analog input channel of DAQ 6212, the other signal is from a pressure sensor, i am measuring a rough time delay between both signals and then writing it into an spreadsheet, but the problem as i said that it skips one cycle during the acquisition.
the number of samples i setted to 1k and i run that test for 20 minutes or some time more
the setting for digital pulse is:
High time is 500ms or 1000ms
Low time is 500ms or 1000ms
 
 i am posting my VI  and the result in excel file to make my point more clear.may be it gives better idea of  problem i am facing. the code is really messy but hope u will understand.
 
thanks
0 Kudos
Message 1 of 2
(2,521 Views)
Duplicate post.
Message Edited by Ravens Fan on 03-17-2009 11:02 AM
0 Kudos
Message 2 of 2
(2,482 Views)