User Manual Part 2

IS-900 User Guide Page 81 of 159
Alignment Reference Frame Record
This record is sent in response to an A{stationNum}<>
command. It returns 9 ASCII floats that were last set with
the A command. Each float is represented as 7 characters
with 2 digits after the floating point. Units are centimeters.
2{stationNum}A{OxOyOzXxXyXzYxYyYz}<>
Bytes Explanation
1 Record type , '2'
2 Station Number. A hexadecimal number up to C.
3 Sub-Record type, 'A'
4-24 OxOyOz - origin coordinates
25-45 XxXyXz - vector in the direction of the positive x
axis
46-66 YxYyYz - vector in the direction of the positive y
axis
67-68 CR, LF
Boresight Reference Angles Record
This record is sent in response to a G{stationNum}
command. It returns 3 ASCII floats that were last set with
the G command. Each float is represented as 7 characters
with 2 digits after the floating point. Units are degrees.
2{stationNum}G{yawref pitchref rollref}<>
Bytes Explanation
1 Record type , '2'
2 Station Number. A hexadecimal number up to
C.
3 Sub-Record type, 'G'
4-10 yawref - azimuth reference angle
11-17 pitchref - elevation reference angle
18-24 rollref - roll reference angle
25-26 CR, LF
Hemisphere Record This record is sent in response to an H{stationNum}<>
command. It returns 3 ASCII floats that were last set with
the H command. Each float is represented as 7 characters
with 2 digits after the floating point.
2{stationNum}H{p1p2p3}<>