General Description
DCM250B is a low-cost three-dimensional electronic compass, using hard and soft magnetic calibration algorithm, so that the compass can eliminate the influence of magnetic field through the calibration algorithm in the environment with magnetic field interference. The DCM250B&260B integrates a three-axis fluxgate sensor, calculates the heading in real time through the central processor, and uses a three-axis accelerometer to perform heading compensation for a wide range of tilt angles, ensuring that the compass can also provide high accuracy at tilt angles up to ±85° Heading data. The electronic compass integrates high-precision MCU control and diversified output methods. The standard interfaces include RS232/RS485/TTL and other interfaces, and other communication interfaces can be customized.The DCM250B/260B is small size, low in power consumption, and can be used in many fields such as stable antennas, vehicles, system integration, etc. The high shock resistance and high reliability also make the compass work normally in extremely harsh environments, and is more suitable for today's Precision measurement integrated control system.
Electrical Characteristics
| Compass heading parameter |
The best heading accuracy |
0.8° tilt <10° |
| 1.5° tilt <30° |
| 2.0° tilt <40° |
| 3.0° tilt <70° |
| Resolution |
0.1° |
| Compass tilt parameter |
Pitch accuracy |
0.1°<15°（Measuring range） |
| 0.2°<30°（Measuring range） |
| 0.3°<60°（Measuring range） |
| 0.4°<90°（Measuring range） |
| Pitch tilt range |
±85° |
| Roll accuracy |
0.1°<15°（Measuring range） |
| 0.2°<30°（Measuring range） |
| 0.3°<60°（Measuring range） |
| 0.4°<90°（Measuring range） |
| Roll tilt range |
±85° |
| Resolution |
0.1° |
| The best compensation angle range of compass tilt |
<40° |
| Calibration |
Hard iron calibration |
Yes |
| Soft iron calibration |
No |
| Magnetic field interference calibration method |
Plane rotation in a circle (2D calibration) |
| Physical features |
Dimension |
L33×W27×H8mm |
| Weight |
20g |
| RS-232/RS485/TTL interface connector |
5PINconnector |
| Interface features |
Start delay |
<50MS |
| Maximum output rate |
20Hz/s |
| Communication rate |
2400到19200baud |
| Output format |
Binary high performance protocol |
| Power |
Power supply |
（Default）DC+5V |
| |
（Customized）DC9～36V |
| Current(Maximum) |
45mA |
| Ideal mode |
35mA |
| Sleep Mode |
TBD |
| Enviroment |
Operating range |
-40℃～+85℃ |
| |
Storage temperature |
-40℃～+100℃ |
| |
Resistance shock performance |
2500g |
| Electromagnetic compatibility |
According to EN61000 and GBT17626 |
| MTBF |
≥40000 hours/times |
| Insulation resistance |
≥100M |
| Shock resistance |
100g@11ms、3Times/Axis(half sinusoid) |
| Anti-vibration |
10grms、10～1000Hz |
| Weight |
30g(without cable) |
Dimension
Electrical Connection
| Line color function |
PIN1RED |
PIN2N/C |
PIN3BLACK |
PIN4GREEN |
PIN5YELLOW |
|
Vcc 5V
Power supply Positive
|
|
GND
Power Negative
|
RS232(TXD)
Or RS485(D-)
|
RS232(RXD)
Or RS485(D+)
|
Specification Download
