Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 195
BF - Manual Fixed Altitude
Purpose
Sets a manual fixed altitude.
Format
BFnnnnn
Range
nnnnn = 1 to Maximum Altitude dm (0 = automatic)
Default
BF0
The default setting for this command is recommended for most applications.
Description This command takes values from zero to a frequency-dependent maximum. A setting of
zero means that the altitude is to be automatically measured, whereas any value above zero
(up to the maximum) specifies a manual, fixed altitude to use for setting up the transmit
and receive lengths, and disables bottom search. The maximum values are:
Table 22.
Maximum Fixed Altitude
Frequency (kHz)
Max Fixed Altitude (dm)
983.04
450
491.52
1250
307.20
2400
BP – Bottom-Track Pings per Ensemble
Purpose
Sets the number of bottom-track pings to average together in each data ensemble.
Format
BPnnn
The BP command works only without the # sign.
Range
nnn = 0 to 999 pings
Default
BP000
The default setting for this command is recommended for most applications.
Description BP sets the number of bottom-track pings to average together in each ensemble before
sending/recording bottom-track data.
The Sentinel V RT interleaves bottom track pings with water track pings, if water-mass layer
mode is enabled, and with Profile pings if water profiling is enabled. If BP = zero, the Sentinel
V RT will not collect bottom track data or water track data. Also, the Sentinel V RT will not
collect water profile data if WP=0, or if the water profile feature is not enabled (see TP – Time
Between Pings, WP – Pings Per Ensemble and BK - Water-Mass Layer Mode).
The Sentinel V RT automatically extends the ensemble interval (TE) if BP x TP > TE (see
