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PDF DCM302B Data sheet ( Hoja de datos )

Número de pieza DCM302B
Descripción High Accuracy 3D Electronic Compass
Fabricantes RION 
Logotipo RION Logotipo



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DCM302B-High Accuracy 3D Electronic Compass(2D Calibration)
SPECIFICATIONS
Item No.DCM302B
DescriptionHigh Accuracy 3D Electronic Compass(2D Calibration)
VersionVer.07
Production implementation standard reference
● Enterprise quality system standards: ISO9001: 2008 standard (certification number: 128101)
● Tilt sensor production standards: GB / T 191 SJ 20873-2003 inclinometer general specification of Level
● Gyro accelerometer test standard: QJ 2318-92 Gyro accelerometer test methods
● Software development reference standard: GJB 2786A-2009 military software development General
requirements
● Product environmental testing standards: GJB150
● Electromagnetic anti-interference test standards: GB / T 17626

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DCM302B pdf
DCM302B-High Accuracy 3D Electronic Compass(2D Calibration)
DCM301B Measuring Directions&Fix
The DCM302B 3D electronic compass azimuth is using geomagnetic principle, so it is very important to
select a minimum magnetic interference environment for installation positon. Please place and install the
DCM302B away from the iron, magnets, engines and other magnetic objects as much possible as you
can. Need control over 40CM distance(different magnetic interfere with the compass in different
distance ) at least even there are these magnetic medium around . In order to ensure optimal
measurement environment please must use the M4 anti-interference screws for installation .
Although DCM302B can compensate the moderate deviation in the stable magnetic environment, but it
can not compensate the changed magnetic interference. Please pay much attention to the wire with DC
will generates a magnetic field , because if the DC change then the magnetic field will also change in
size . The battery also is another interference source of changing . Each installation is different, and the
user must evaluate the feasibility of installation under all possible operating environment.
The optimal heading accuracy of DCM302B can reach 0.5°0.8°, this undergo a rigorous validation
indisputable, the most scientific test method is equally crucial. The test method we recommend is: Please
install the DCM302B electronic compass to a vertical and erect aluminum pole (non-magnetic material),
then proceed with heading accuracy measurement (of course the rotating rod perpendicular to the
rotating platform, as much as possible to avoid large external magnetic field interference). Doing so can
reduce the compass turning radius, to scientifically improve the measurement accuracy. This is just to
provide the installation of the laboratory, must be flexible to deal with the specific situation.E.g: is
mounted in the car, DCM302B should do its installation in the perpendicular to the movement direction.
DCM302B Calibration methods:
Calibration lemmas:
1) The accuracy of testing compass can not reach the requirements;
2) compass installation environment have magnetic interference, the interference is fixed, and
the interference magnetic field and compass installation will not happen again in distance
changes (example: compass to be installed above an iron material, because the iron will have
magnetic interference, at this time then need to rotate and calibrate the iron and compass, and
the iron and compass will not be separated when using , once they are separated then need to
recalibrate. If the iron size is not fixed, or with a compass distance change is not fixed, the
interference can not be calibrated,only can install it in a very far away , safe distance control in
above 40cm).

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