As described in elog 2063 and the mevans document, we need to measure the TF of the OAF's plant, to find the delay.
At DC, the phase is 2.5deg, and at 32Hz, the delay is -4.6Hz (extrapolated from the points at ~30deg and ~38deg). The DTT file is in /users/Templates/OAF/OAF-MCL-Delay-9Nov2011.xml .
This gives a phase lag of 7.1deg at the Nyquist freq.
7.1 / 180 * 32 = 1.26, so ~1 cycle delay. Not so much. The new ADCs are waaaay faster than the old 110Bs. Yay!