[Help] is there anyway to acquire signal from PPS IN port in usrp 2922 ?

[jombang]

Hi,

I plan to synchronize USRP and other device which in this case is zolertia z1 by feeding both of them with same pps signal from octoclock.

The following figure is the signal from octoclock that can be monitored from osciloscope. 

As we can see, every 1 second, there is 200ms that the signal is 5v, and there is 800ms that the signal is 0v. I plan to make a code that can transmit tone signal if only there is 5v signal in PPS IN port. To do that, I need to acquire signal from PPS IN port that sadly I don't find the way to do that yet. Is there anyway to acquire signal from PPS IN port in usrp 2922?