October 2017
RiverPro and RioPro ADCP Guide
Page 144
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Table 19:
Fixed Leader Data Format
Hex Digit
Binary Byte
Field
Description
65-68
33,34
dis1 / Bin 1 distance This field contains the distance to the middle of the first non-surface layer depth cell
(bin). This value is dynamic and automatically set for each ping by the RiverPro/Ri-
oPro.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm (2150 feet)
69-72
35,36
Xmit pulse length
This field contains the length of the transmit pulse. This is the value for non-surface
layer cells and is automatically set by the RiverPro/RioPro.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm (2150 feet)
73,74
37
Spare
This field is always 1.
75,76
38
Spare
This field is always 1.
77,78
39
WA / False Target
Threshold
Contains the threshold value used to reject data received from a false target, usually
fish (WA-command).
Scaling: LSD = 1 count; Range = 0 to 255 counts (255 disables)
79,80
40
Spare
This field is always 1.
81-84
41,42
Transmit lag dis-
tance
This field, set automatically by the RiverPro/RioPro, contains the distance between
pulse repetitions. This applies only to non-surface layer cells.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 centimeters
85-100
43-50
CPU Board Serial
Number
Contains the serial number of the CPU board.
101-105
51-52
System Bandwidth
Word contains bandwidth that would be used for mode 1 or 2. Does not contain
mode 3 or 31 information.
106-107
53
System Power
This field is always 0.
108-109
54
Spare
Spare
110-119
55-58
Serial #
Instrument serial number. The CPU Board Serial number is stored in Big Endian (MSB
sent first).
120 -121
59
Beam Angle
Beam angle
