DAQ card for locking to input frequency & then generate Sine wave of same frequeny in sync with input signal.

[kekin]

Please suggest a DAQ card for following requirement:

1. I have an input square wave of whose freqency can vary from 390Hz to 410Hz .

2. I want to generate lot of sine waveforms which sholud be exactly in sync with this input as fast as possible.

3. So the DAQ card must find the input frequency every cycle or it can have a kind of PLL arrangement for that with center freq of 400Hz & then generate the AOUTs of sine wave with same variable freq .ie. in sync with input square wave.

For example for 1st 10 cycle say input freq is 398Hz, so for 1st 10 cycles AOUT must generate sine wave of 398Hz in sync with square wave input.

Then say for next 15 cycles input freq is 401Hz (due to drift) & hence now for these 15 cycles AOUT must generate sine wave of 401Hz in sync with square wave input.

In this way I will be able to lock the output wave to incoming input wave.

Thanks in advance.

[kekin]

One important thing:

The no. of sine wave output swill be atleast 12 & all with different phase shifts.

Please keep this point in mind while suggeting card. I acn go for say 2 cards if AOUTs are less.

[sumit.sen]

Please take a look at this https://www.ni.com/en-us/support/model.pci-6723.html

[kekin]

The link is returning an error

"Error - Not Found"

[sumit.sen]

Please try it again, it works for me.

[kekin]

I have the same PXI-6723 card but its not able to lock to varying input signal & generate the o/p in sync with input.

I have used timer/counter to measure input freq & correct the o/p, but its very difficult & exact sync is almost immpossible.

Can you provide better solution with same or any other card?