[Torrey, Daniel]

I connected the 10 MHz Reference In on Moku 1 to 10 MHz Reference Out on Moku 4 with a bnc (not a homemade additional shielded cable). When turning on the EOM drives to the 775 nm light EOM and the 1550 nm light EOM, one from each iPad, we don't observe a sine wave modulation around 11 Hz like we did in this post. If we shift the frequency of the EOM drive on one Moku, we can see the sine wave.

The Moku Website says to "ensure 'always use internal reference' is disabled", but we did not find this setting. The third (right-most) LED on Moku 1 indicating there is a reference input is blue. Considering this LED is lit up and the 11 Hz sine wave went away but is recoverable by intentionally changing the frequencies away from each other, I am assuming this setting does not need to be changed.