Per Rick's request I changed the end X PCAL frequency from 3501.3 to 4501.3. I also changed the sine amplitude from 35,000 to 40,000. I went out of observing from 12:00:23 - 12:11:29 UTC to do this. I accepted the SDF differences from doing this (see attached). Per Rick's schedule this should be left to run for 12 hours.