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PXI-6602 two-signal edge separation measurement

Hi
My application requires two-signal edge separation measurement, I should use three counters of PXI 6602 to counter three PWM signals (produced by DSP Hardware). Each counter will treat with a PWM signal (gate) and a AUX-LINE signal. For three counters they use the same signal (I call it trigger signal produced by DSP) as the AUX-LINE signal. So the three counters'  AUX-LINE signal should be same.
And I each counter will counter onethat to meI know the exact time between the rising edge of a trigger signal to my PCI-16XE-10 DAQ and a sync signal from an IEEE 1394 camera. From the NI examples I found a VI that would be perfect for this application 'two-signal edge-separation measurement(NI-TIO).vi'. Unfortunately the PCI-16XE-10 board is NI-STC. Is there anyway I can get 'two-signal edge-separation measurement' with my existing board i.e. rather than buying a (NI-TIO) NI 660x counter/timer?
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