Paradise P300 Buffer %, Bert BER, TX Terr BER, RX Terr BER, Aupc Delta Power, Distant END EB/NO

Each option is as follows:

BUFFER %	The buffer fill state is logged every period this allows fill trends to be monitored
Eb/No	The average AND worst case Eb/No for the period are logged at the end of the
	period.
USER BER	The average AND worst case estimated USER BER are logged at the end of the
	period.
BERT BER	The BER as measured by the internal BER Tester (BERT). This can be measured
	either in the main data channel or when running in parallel with the main data in
	either the ESC or the Aux channels. The average AND 1 second worst case
	BER measured by the BERT are logged at the end of the period.
TX TERR BER	This is the BER measured at the terrestrial input. This is only available if the
	terrestrial signal can be monitored for BER (ie it's framedand/or has a CRC). The
	actual method of measuring it is determined by Change, User-Opt, Operation,
	Terrestrial, Tx/Drop BER.
RX TERR BER	As above. This is only meaningful (ie different to the Tx/Drop BER above) if the
	modem is used with separate Drop/Insert bearers by the use of a twin G.703
	terrestrial interface. The method of BER measurement can be selected by
	Change, User-Opt, Operation, Terrestrial, Rx/Insert BER.
AUPC
DELTA POWER	This logs the power variation (delta power) the AUPC has used to maintain the
	target Eb/No. See AUPC in section 8.11.1 on page 154 for further details. This is
	useful in case the satellite operator requires you to determine the Tx power that
	was active at any time whilst AUPC was active.
DISTANT END
EB/NO	This is the distant end Eb/No, available when AUPC is active (again see AUPC
	in section 8.11.1 on page 154 for further details). As with the local Eb/No the
	average AND worst case Eb/No for the period are logged at the end of the
	period.

The automatic logging of local/distant Eb/No and various BER's, coupled with a `centralised log accumulation` by a M&C package (eg Alphawave `CAM`) provides a very convenient way to be able to monitor the performance of any link (and have recorded data verifying the performance should anyone query if there was a `fade`).

Please note that each data type logged uses up one log entry every Autolog period (ie the log capacity can be consumed quickly with multiple events logged at very regular intervals).

P300H P300 Series Modem Installation and Operating Handbook Page 121