How to generate sequence of pulse trains with DAQmx?

I need to generate a sequence of pulse trains with DAQmx (the card I have is a PXI-6229 card). As an example:
- 10'000 pulses at 20kHz every 5 seconds with an initial offset of 2 seconds (let's say 10 pulse trains in total).
If I use the CreateVirtualChannel.vi in "CO pulse ticks" mode, I can only specificy offset, high ticks and low ticks, but not that the sequence of pulses should be repeated after some time. 
Now I thought that I could solve this problem if it were possible to multiply two counter outputs: the first counter would generate the pulses (continuously) whereas the second one would switch between low and high on a slower timescale in order to gate the first counter, thereby providing an initial offset and the "off" phases between the pulse trains.
Is it somehow possible to multiply two outputs with DAQmx and the card I have? Or is there another solution to the problem?
Thanks a lot in advance for any hints!

Hi dlanger,
what you want to do requires a little bit more work. 
First look at the example "Gen Dig Pulse Train-Continuous.vi" from the LV example finder.
This example generates a continuous* pulse train. As you see, you need a sample clock VI for setting the sample mode. 
* NOTE: Generating a finite pulse train with a M-series card requires 2 counter.
With a pause trigger (DAQmx trigger property node) you can gate the output of that counter.
Now you have to generate a gate-signal with the the 2nd counter. That means, only if  Ctr1-out is high Ctr0-out outputs the 20 kHz-signal. 
Maybe you have to adjust the times in my example a bit. 
Unfortunately there is just one "small" problem: "let's say 10 pulse trains in total" 
This is not possible, because a 3rd counter would be necessary (*). 
As a workaround you can modify the while-loop that both tasks are cleared after 50s. This is not brilliant, but should work fine for you. 
A more sophisticated way is to perform a correlated DIO. So you can generate custom pattern for multiple outputs. 
A good example can you find here: 
Retrigger and Repeat Finite Digital Pulse Train in LabVIEW
http://decibel.ni.com/content/docs/DOC-8473 
or here:  
Generating More Than 2 Pulse Trains Using CompactDAQ
http://decibel.ni.com/content/docs/DOC-2167 
Hope this helps.
With best wishes,
Ralf N. 
Attachments:
Gen Gated Dig Pulse Train-Continuous.vi ‏38 KB

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