[Discuss-gnuradio] using the external reference clock "REF CLOCK"

[Steve Mcmahon]

Hello:

I am trying to sync up the clocks on two USRP2 boards. How do I use the 
external reference clock "REF CLOCK" input on the USRP2 board? What does this 
input take? My understanding is that it takes a 10 MHz sine wave, 1 volt 
peak-to-peak.

And how do I enable this input? Do I need to set anything in my flowgraph?

Thanks.

Steve McMahon