October 2017 RiverPro and RioPro ADCP Guide
Page 170
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Table 36: Vertical Beam Profile Leader Format
Hex Digit Binary Byte Field Description
1-4 1,2 ID Code Stores the vertical beam profile leader identification word (0x0F01h)
5-8 3,4 # Bins Stores the number of bins (ZN – Vertical Beam Number of Bins).
Scaling: LSD = 1 bin; Range = 1 to 200 bins
9-12 5,6 Ping/ensemble Stores the number of pings to average together in each ensemble (ZP – Vertical
Beam Number of Pings). If ZP = 0, the RiverPro/RioPro does not collect vertical beam
profile data.
Scaling: LSD = 1 ping; Range = 0 to 999 pings
13-16 7,8 Bin size Stores the vertical beam profile bin size (cm) (ZS – Vertical Beam Bin Size)
Scaling: LSD = 1 cm; Range 2 to 500 cm
17-20 9,10 Distance to bin 1
middle
Contains the distance to the middle of bin 1. The distance to the middle of bin 1 is
determined by: blank + (xmtLength + lagLength + binSize)/2. Blank and bin size are
affected by the speed of sound; xmt length and lag use a fixed speed of sound value.
ZF – Vertical Beam Blanking Distance determines blank.
ZS – Vertical Beam Bin Size determines bin size, which also determines xmt length,
unless the ZT xmt override is used.
ZV – Vertical Beam Ambiguity Velocity determines lag length by setting the ambigu-
ity velocity.
Scaling: LSD = 1 centimeter; Range = 0 to 500 cm
21-24 11-12 Reserved Reserved
25-28 13-14 Xmit length Stores the vertical beam Transmit Length in cm.
Scaling: LSD = 1 centimeter; Range = 2 to 500 cm
29-32 15-16 Lag length Lag Length in cm. The lag is the time period between sound pulses. This is varied as
required by the RiverPro/RioPro.
33-36 17-18 # Code elements Contains the number of code elements in the transmit pulse.
Scaling: LSD = 1 count; Range = 0 to 255 counts
37-160 19-40 Reserved Reserved