RiverPro and RioPro ADCP Guide October 2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 157
Table 26: Bottom-Track Data Format
Hex Digit Binary Byte Field Description
141- 144 71,72 BX/BT Max. Depth Stores the maximum tracking depth value (BX-command).
Scaling: LSD = 1 decimeter; Range = 80 to 9999 decimeters
145-152 73-76 RSSI/Bm #1-4 RSSI
Amp
Contains the Receiver Signal Strength Indicator (RSSI) value in the center of the bot-
tom echo as determined by each beam.
Scaling: LSD ≈ 0.45 dB per count; Range = 0 to 255 counts
153, 154 77 GAIN Contains the Gain level for shallow water. See WJ-command.
155-162 78-81 BT Range MSB/Bm
#1-4
Contains the most significant byte of the vertical range from the RiverPro/RioPro to
the water bottom (or surface) as determined by each beam. This vertical range does
not consider the effects of pitch and roll. When bottom detections are bad, BT
Range=0. See bytes 17 through 24 for LSB description and scaling.
Scaling: LSD = 65,536 cm, Range = 65,536 to 16,777,215 cm
163-167 82-83 Reserved Reserved. This word is always 1.
168-170 84-85 Reserved Reserved. These fields are always 0.
171-179 86-90 Range Contains the least significant byte of the vertical range from the RiverPro/RioPro to
the water bottom (or surface) as determined by each beam. This vertical range does
not consider the effects of pitch and roll. When bottom detections are bad, BT
Range=0.
Scaling: LSD = 1 cm, Range = 1 to 255 cm
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