Jiri_2,
There are a couple of ways that you can do this. If you want to keep
the same data in the output buffer, you can simply change the rate of
the analog output. This is a simple way of implementing a basic
function generator. The following shipping example does this:
Cont Gen Voltage Wfm-Int Clk-Variable Rate.vi
There is another option which would allow for a more advanced function
generator. In this method, you need to set the the board to not allow
regeneration. This means that you will have to continuously write data
to the buffer. If you write only whole periods of your waveform, you
will not have any discontinuities. This process is illustrated in this
example:
Cont Gen Voltage Wfm-Int Clk-Non Regeneration.vi
Hope this helps,
Ryan Verret
Product Marketing Engineer
Signal Generators
National Instruments
![Ryan_V[DE]](http://forums.ni.com/attachments/ni/170/152606/1/V-ferret.jpg "Ryan_V[DE]"){kind=avatar}
