Matt, Terra

We have some PLL settings that work for our PI damping.  I've attached a screenshot which shows all of the filter and gain settings for the PLLs.  Since the loop is all digital, the settings of all PLLs should be the same.  The settings shown are for "acqusition mode" where the PLL UGF is about 3Hz.  The PLLs are managed by the Guardian; the integrator (FM3 in FREQ_FILT2) will be engaged when the PLL has found something to follow, and bandwidth will then be lowered (FREQ_FILT2_GAIN = 0.3 from 3.0, and FM3 on... it is a 1Hz low pass filter).  If the PLL loses its line, the Guardian will revert to acquisition mode.