October 2017 RiverPro and RioPro ADCP Guide
Page 136
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
PD0 Output Data Format
This section shows the output data format of the RiverPro/RioPro and explains it in enough detail to help
create your own data processing or analysis programs (see How to Decode an RiverPro/RioPro Ensem-
ble).
The following description is for the standard PD0 RiverPro/RioPro output data format. Figure 29 through
Figure 47 shows the ASCII and binary data formats for the RiverPro/RioPro PD0 mode. Table 18 through
Table 45 defines each field in the output data structure.
After completing a data collection cycle, the RiverPro/RioPro immediately sends a data ensemble. The
following pages show the types and sequence of data that are included in the RiverPro/RioPro output data
ensemble and the number of bytes required for each data type. The RiverPro/RioPro sends all the data for
a given type for all depth cells and all beams before the next data type begins.
The RiverPro/RioPro by default is set to collect velocity, correlation data, echo intensity, and percent good
data. The data, preceded by ID code 7F7F, contains header data (explained in Table 18). The fixed and
variable leader data is preceded by ID codes 0000 and 8000, (explained in Table 19 and Table 20). The
RiverPro/RioPro always collects the Header and Leader.
The remaining lines include Water Velocity Profile data and Bottom Track data, described in detail below.
Note that for certain conditions, RiverPro/RioPro adds a new type of Water Velocity Profile data called
‘surface bins’. Surface bin data may have a different bin size than the remainder of the velocity profile. The
table below shows some of the most common IDs.
Table 17: Data ID Codes
ID LSB MSB Description
Echo Intensity Profile Data
Percent Good Profile Data
Vertical Beam Profile Leader Data
Vertical Beam Profile Velocity Data
Vertical Beam Profile Correlation Data
Vertical Beam Profile Echo Intensity Data
Vertical Beam Profile Percent Good Data
Vertical Beam Profile Status Data
Surface Layer Velocity Leader
Surface Layer Correlation Profile Data
Surface Layer Echo Intensity Profile Data
Surface Layer Percent Good Profile Data
The RiverPro/RioPro always sends the Least Significant Byte (LSB) first.
RioPro systems do not include the vertical beam outputs.
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