October 2017 RiverPro and RioPro ADCP Guide
Page 168
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Vertical Beam Range Data Format
BIT POSITIONS
BYTE 7/S 6 5 4 3 2 1 0
1
VERTICAL BEAM RANGE ID
LSB 00h
2 MSB 41h
3 EVAL AMP
4 RSSI AMP
5
RANGE TO BOTTOM
6
7
8
9 STATUS
Figure 40. Vertical Beam Range Format
Table 35: Vertical Beam Range Format
Hex Digit Binary Byte Field Description
1-4 1,2 ID Code Stores the vertical beam data identification word (00 41h).
5-6 3 Eval Amp Contains the evaluation amplitude of the matching filter used in determining the
strength of the bottom echo.
7-8 4 RSSI Amp Contains the RSSI value for the sample at the middle of the bottom echo.
9-16 5-8 Range to Bottom Contains the vertical beam range to the bottom.
Scaling: LSD = 1 mm; Range = 0 to 100000 mm.
17-18 9 Status Contains flags, defined as follows:
<d7:d3> Reserved
<d2> Gain setting: 0 = LowGain; 1 = HighGain
<d1:d0> Status: 00 = Range invalid;
01 = Range valid from w-filter
10 = Range valid from leading-edge filter
Only present when there is a vertical range to report.
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