These 3 channels started rapidly changing sometime around 3 or 4 this morning (I'm having trouble getting data for them from dataviewer). H1:ALS-X_SPARE_A_DEMOD_RFMAX H1:ALS-X_SPARE_B_DEMOD_RFMAX H1:LSC-X_TR_A_DC_RESPONSIVITY I ran camonitor on them. Here is a snippet of the results for H1:ALS-X_SPARE_A_DEMOD_RFMAX. The others were similar. ... H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.377320 -5.47624e+66 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.387320 2.67673e-83 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.398321 7.40505e-305 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.407321 -1.97952e+288 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.417322 -4.52984e+42 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.428322 4.45211e-194 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.438323 -3.29246e+177 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.448324 4.60892e+278 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.457324 3.91205e-35 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.467325 7.40505e-305 H1:ALS-X_SPARE_A_DEMOD_RFMAX 2014-08-28 09:07:40.478325 2.06671e+235 ... I think they originate in Beckhoff. I have instructed Conlog to stop recording them for the time being by adding them to the exclude list and regenerating the channel list.