I want to generate two sine waves of same frequency but would like to manipulate the phas

[AB 8]

e of these sine waves individually,i am using two seperate DAQ cards for the generation. would like to know if real time cards can be of some use.someone suggested the use of I/O synchronization,would like to know more details of that technique if possibleI am using two PC1200 DAQ cards.

[Raecine Meza]

e of these sine waves individually,i am using two seperate DAQ cards for the generation. would like to know if real time cards can be of some use.someone suggested the use of I/O synchronization,would like to know more details of that technique if possibleIn your case, real-time hardware is not necessary.

If you would like to generate the sine waves simultaneously from the two separate daq boards, you could synchronize the two daq boards using RTSI. (I didn't double-check Whether your boards supported RTSI. You can check your user manual to be sure.) Through the RTSI line, your two daq boards can share an AO Update signal.

Check out the Dev Zone article titled "Tips and Techniques in DAQ triggering". Section F discusses RTSI.

http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/2a03115556fb233386256870005bb522?OpenDocument

[Realmur33]

e of these sine waves individually,i am using two seperate DAQ cards for the generation. would like to know if real time cards can be of some use.someone suggested the use of I/O synchronization,would like to know more details of that technique if possibleI have performed this exact task with great success using the PCI 6030E real time board. In fact I will be porting the same program over to the PXI real time unit. It is quite easy as long as your waveforms are 1000 points/second or less. If there are more points/second, you will need to gate your loops with a counter.

[AB 8]

e of these sine waves individually,i am using two seperate DAQ cards for the generation. would like to know if real time cards can be of some use.someone suggested the use of I/O synchronization,would like to know more details of that technique if possiblecould u give me more details about ur work...someone suggested me the same card...but would like to know more about the VI that you have used to create these waveforms.