Gill WindObserver 65 - Page 57

57
gillinstruments.com
Issue: 8 (Applies to firmware 2387 6.09 onwards)
Document number: 1390-PS-0039
Ultrasonic Anemometer
Ux – Digital Output Units
Units
metres/sec
(m/s)
knots
(knots)
miles / hour
(MPH)
kilometre/hour
(kph)
feet / minute
(fpm)
Configuration
code
U1
U2 U3 U4 U5
Vx- Vertical Output Padding
Setting
Configuration code
Disable vertical output padding
V1
Enable vertical output padding
V2
Xx - 45° Alignment Offset/Inverted Operation
Setting
Configuration
code
Notes
Align U axis with
transducer axis
X1
X1. Aligns U axis with North/South axis.
Align U axis +45
°
to
transducer axis
X2
X2. This re-aligns both U&V and polarity 45˚ to transducer axis.
Reverses Polar
Direction
X3
X3 reverses reported polar direction to allow the instrument to be
mounted upside down. N.B. Does NOT affect UV alignment (Mode 1, 3).
Align @ 45° from
North
X4
X4 set polar alignment at 45 degrees from North when instrument is
mounted upside down.
Does NOT affect UV alignment (Mode 1, 3).
Error! Reference source not found.4 shows the polarity of U and V if the wind components along the U and V axis are
blowing in the direction of the respective arrows.
-U
+U
+V
-V
E
N
S
W
Figure 4 UV Polarity