Count of seconds since last link up that that there was:
xTU-C: (CRC-8 anomalies in one or more of the
received bearer channels) >= 18 OR LOS >= 1
OR SEF >= 1 OR LPR >= 1
xTU-R: (FEBE anomalies in one or more of the
received bearer channels) >= 18 OR LOS-FE >= 1
OR RDI >= 1 OR LPR-FE >= 1 .
This parameter is inhibited during UAS.