Silicon Laboratories DIGITAL COMPASS-RD User Manual page 3

DIGITAL COMPASS-RD
Note: The USB and power jack are under the LCD display.
5.1. USB
The compass can easily be connected to a PC using the USB port. Software is provided to communicate with the
compass through USB. This software displays the same information provided by the compass using a friendly
interface. See Section 8 for details on installing the provided software. Additionally, the USB connection provides
power to the board when connected to a PC.
5.2. LCD
The following is a list of indicators that could be shown on the LCD display. See Figure 2 for a diagram of the LCD
display with all the segments on:
a) Symbols that are used during the calibration process:
1. CALIBRATION - calibration routine is in progress
2. ERROR - error encountered during calibration process
3. TURN - the compass must be turned a full circle
d) Digits and symbols used for azimuth, temperature or inclination display:
1. 5 digits
2. Degree ( o ) and minute ( ' ) symbols used in azimuth display
3. X and Y symbols used in inclination display
4. Decimal point used for temperature display
c) Indications that either temperature, inclination or azimuth is displayed:
1. When neither of them is on, the azimuth is displayed
2. When temperature is on, the environment temperature is displayed
3. When inclination is on, the tilt angles on both X and Y axes is displayed
d) 16 arrows that indicate the North direction relative to the reference point
e) Silicon Laboratories logo
f) 2 digits that indicate the heading or the menu of the compass
2
Figure 1. Digital Compass Reference Design Board
Rev. 0.1