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)
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