Triton Isis - Manual (Page 53)

June 2004 Isis® Sonar User's Manual, Volume 2 43
S Seconds. This can be a decimal number to include a fraction of a
second.
T Velocity East
Note: If speed (V) is not specified, and velocity North
and East are specified, then speed is computed from the
velocity north and east.
U Velocity North. Fish Speed = sqrt(T*T+U*U) * 1.9438445
Note:
If speed (V) is not specified, and velocity North
and East are specified, then speed is computed from the
velocity north and east.
V Fish Speed (knots) — main speed used for image correction
W Fish Depth in feet (if no manual depth is set)
Y Year
Z Benthos flag is set TRUE. Characters 121 132 (inclusive, zero-
based indexing) in the receive string are stored as downlink and
saturation information. The characters are then blanked-out to
prevent parsing errors.
a Auxiliary Altitude (meters)
b Temperature Frequency (CTD data)
e Magnetometer X
g Channel 1 Gain Code (0 255)
h Fish Heading (degrees)
i Current Line ID
j Channel 2 Gain Code (0 255)
k Channel 3 Gain Code (0 255)
l [small letter “ell”] Layback (in meters)
m Fish Speed. (m/s) (This value is multiplied by 1.9438445 to
become knots.)
n Channel 4 Gain Code (0 255)
o [small letter “oh”] Cable Out (in meters)
q Channel 1 Initial Gain Code (0 255)
r Channel 2 Initial Gain Code (0 255)
s Speed log (knots) from impeller or other such sensor; stored only
t Channel 3 Initial Gain Code (0 255)
u Channel 4 Initial Gain Code (0 255)
v Ship Speed (in knots; stored only)
w Magnetometer Y
x Ship Longitude (decimal degrees) or easting (meters); stored
Appendix D: Serial Interfaces