The two receivers are on the same frequency, using the same LO and master
reference. The little tweak feature is to get the 2nd LO on the 366 in the
right place. The phase is not going to be coherent and will vary as mode is
changed, and probably some other related activities as well. That is the
nature of two codecs/two DSPs, etc.
The exact frequency of the RX366 is user tunable and can be brought to
within 0.1Hz of the main receiver.
They are locked together and there will not be any drift.
Hope that helps,
With an RX366 board installed, is the secondary receiver now phase coherent
with the main receiver? Are all the LO and digitizer clocks common between
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