C-2.2 Environmental Sensor Commands; Ea Heading Alignment; Ec - Speed Of Sound; Ed - Depth Of Transducer - Teledyne ADFM Pro20 Technical Manual

C-2.2 Environmental Sensor Commands
The ADFM uses the following commands to control the environmental and
positional information that affects internal data processing.

EA Heading Alignment

Purpose:
Format:
Range:
Default:
Description

EC - Speed Of Sound

Purpose:
Format:
Range:
Description:

ED - Depth Of Transducer

Purpose:
Format:
Range:
Description:
ADFM Technical Manual (January 2000)
Corrects for physical misalignment between the long axis of
the ADFM transducer and the channel it is deployed in.
EA+nnnnn
±nnnnn = -179.99 to 180.00 degrees
EA00000
EA is an alignment angle (referenced to the long axis of the
ADFM transducer) used as a new zero reference for heading
output and for transformation to earth coordinates.
Sets the speed of sound value used for ADFM data processing.
ECnnnn
nnnn = 1400-1600 meters per second
EC sets the sound speed value used by the ADFM to scale ve-
locity data, depth cell size, and range to the surface. The
ADFM assumes the speed of sound reading is taken at the
transducer head
Sets the ADFM transducer depth.
EDnnnn
nnnn = 0 to 9999 decimeters (meters x 10)
ED sets the ADFM transducer depth. This measurement is
taken from sea level to the transducer faces. The ADFM uses
ED in its speed of sound calculations. The ADFM assumes
the speed of sound reading is taken at the transducer head.
ADFM Commands
page C-13