October 2017
RiverPro and RioPro ADCP Guide
Page 148
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Table 20:
Variable Leader Data Format
Hex Digit
Binary Byte
Field
Description
33-36
17,18
ED / Depth of Trans-
ducer
Contains the depth of the transducer below the water surface (ED-command). This
value may be a manual setting or a reading from a depth sensor.
Scaling: LSD = 1 decimeter; Range = 1 to 9999 decimeters
37-40
19,20
EH / Heading
Contains the RiverPro/RioPro heading angle (EH-command). This value may be a
manual setting or a reading from a heading sensor.
Scaling: LSD = 0.01 degree; Range = 000.00 to 359.99 degrees
41-44
21,22
EP / Pitch
(Tilt 1)
Contains the RiverPro/RioPro pitch angle (EP-command). This value may be a man-
ual setting or a reading from a tilt sensor. Positive values mean that Beam #3 is
spatially higher than Beam #4.
Scaling: LSD = 0.01 degree; Range = -20.00 to +20.00 degrees
45-48
23,24
ER / Roll
(Tilt 2)
Contains the RiverPro/RioPro roll angle (ER-command). This value may be a man-
ual setting or a reading from a tilt sensor. For up-facing RiverPro/RioPros, positive
values mean that Beam #2 is spatially higher than Beam #1. For down-facing
RiverPro/RioPros, positive values mean that Beam #1 is spatially higher than Beam
#2.
Scaling: LSD = 0.01 degree; Range = -20.00 to +20.00 degrees
49-52
25,26
ES / Salinity
Contains the salinity value of the water at the transducer head (ES-command).
This value may be a manual setting or a reading from a conductivity sensor.
Scaling: LSD = 1 part per thousand; Range = 0 to 40 ppt
53-56
27,28
ET / Temperature
Contains the temperature of the water at the transducer head (ET-command). This
value may be a manual setting or a reading from a temperature sensor.
Scaling: LSD = 0.01 degree; Range = -5.00 to +40.00 degrees
57,58
59,60
61,62
29
30
31
MPT minutes
MPT seconds
MPT hundredths
This field contains the Minimum Pre-Ping Wait Time between ping groups in the
ensemble.
63,64
65,66
67,68
32
33
34
H/Hdg Std Dev
P/Pitch Std Dev
R/Roll Std Dev
These fields contain the standard deviation (accuracy) of the heading and tilt an-
gles from the gyrocompass/pendulums.
Scaling (Heading): LSD = 1
°
; Range = 0 to 180
°
Scaling (Tilts): LSD = 0.1
°
; Range =
0.0 to 20.0
°
69-70
71-72
73-74
75-76
77-78
79-80
81-82
83-84
35
36
37
38
39
40
41
42
ADC Channel 0
ADC Channel 1
ADC Channel 2
ADC Channel 3
ADC Channel 4
ADC Channel 5
ADC Channel 6
ADC Channel 7
0
Battery Voltage 0.1volts
0
0
0
0
0
0
85-114
43-57
Reserved
0
115-116
58
RTC Century
These fields contain the time from the RiverPro/RioPro’s Y2K compliant real-time
clock (RTC) that the current data ensemble began. The TT-command (Set Real-
Time Clock) initially sets the clock. The RiverPro/RioPro does account for leap
years.
117-118
59
RTC Year
119-120
60
RTC Month
121-122
61
RTC Day
123-124
62
RTC Hour
125-126
63
RTC Minute
127-128
64
RTC Seconds
129-130
65
RTC Hundredths
131-132
66
Lag Near
Bottom
Lag Near Bottom (1=true, 0=false)