Xylem Sontek River Surveyor RS5 - Page 47

SonTek RS5 User Manual (August 2020) 47
Measurement
Component
Variable
Action
Message
Criteria
Area
Warning
Variation in Area from the previous
transect is more than 5 percent
5%
Warning
COV of Area is greater than 5 percent
5%
Discharge
Warning
Variation in Total Q from the previous
transect is more than 5 percent
5%
Warning
COV of Total Q is greater than 5
percent
5%
Measurement
Duration
Warning
Total duration of the measurement is
less than 720 seconds. Please consider
making 2 more transects
720s
GPS
GGA
Counter /
Warning
Bad GPS-GGA samples. GPS quality is
0 or 1
Counter /
Warning
Bad GPS-GGA samples. GPS quality
changed from 4 to 2
Warning
HDOP is greater than 2
2
Warning
Change in altitude from the previous
sample is greater than 3 m. Check for
Multi-Path
3m
VTG
Counter /
Warning
Bad GPS-VTG samples
Counter /
Warning
Bad GPS-VTG samples. Boat Speed is
less than 0.1 m/s
0.1m/s
Post
Processing
Composite
Tracks
Warning
System was used as track reference
Warning
BT was used as track reference
Warning
GGA was used as track reference
Warning
VTG was used as track reference
Depth
Reference
Counter /
Warning
Samples used substituted depth
reference
Track Reference
Counter /
Warning
Samples used substituted track
reference