WATSON INDUSTRIES DMS-EGP02 Owner's Manual - page 7
Watson Industries, Inc.
DMS-EGP02 Rev A 03/28/2008
7
1.
A single letter and a space used to indicate the start of the data string. The letter “G”
indicates the start of an inertial data string with successful GPS data input. The letter “I”
indicates the start of an inertial data string
with GPS disabled or absence of valid GPS data.
The letter “R” indicates the start of a Reference data string. If the letter is in lower case
(“g”,“i”, or “r”), an error over-range condition is indicated (see below).
2.
A seven character string representing the bank angle starting with a “+” or a “-“, followed
by three digits, a decimal point, one digit and a space for up to ±179.9 degrees.
3.
A six character string representing the elevation angle starting with a “+” or a “-“, followed
by two digits, a decimal point, one digit and a space for up to ±89.9 degrees.
4.
A six character string representing the heading angle by three digits, a decimal point, one
digit and a space for zero to 359.9 degrees.
5.
A six character string representing the X axis acceleration starting with a “+” or a “-“,
followed by one digit, a decimal point, two digits and a space for up to ±9.99 g’s.
6.
A six character string representing the Y axis acceleration starting with a “+” or a “-“,
followed by one digit, a decimal point, two digits and a space for up to ±9.99 g’s.
7.
A six character string representing the Z axis acceleration starting with a “+” or a “-“,
followed by one digit, a decimal point, two digits and a space for up to ±9.99 g’s.
8.
A six character string representing the X axis angular rate starting with a “+” or a “-“,
followed by two digits, a decimal point, one digit and a space for up to ±99.9
degrees/second.
9.
A six character string representing the Y axis angular rate starting with a “+” or a “-“,
followed by two digits,
a decimal point, one digit and a space for up to ±99.9
degrees/second.
10.
A six character string representing the Z axis angular rate starting with a “+” or a “-“,
followed by two digits, a decimal point, one digit and a space for up to ±99.9
degrees/second.
11.
A seven character string representing the Forward Velocity starting with a “+” or a “-“,
followed by three digits, a decimal point, one digit and a space for up to ±399.9 Km/Hr.
12.
The string is terminated by a carriage return. There will then be a short interval with no
data transmission before the next string begins.
Example:
G
-000.4
+00.1
273.4
+0.00
+0.00
-1.00
-00.4
+00.2
+00.4
+017.3
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
(1)
Bank
angle
(2)
elev.
angle
(3)
Head.
angle
(4)
X
Acc
(5)
Y
Acc
(6)
Z
Acc
(7)
X
Rate
(8)
Y
Rate
(9)
Z
Rate
(10)
Forward
Velocity
(11)
(12)
space
space
space
space
space
space
space
space
space
space
The string transmission rate can be improved by reducing the amount of information (data items)
transmitted. The data items transmitted can be changed by using special commands to modify the