AHRS500CA Series User’s Manual
Doc# 7430-0050-03 Rev. A
Page 23
M
WARNING
Do not reverse the power leads
5. With the AHRS500CA connected to your PC serial port and
powered, open the GyroView software.
6. GyroView should automatically detect the AHRS500CA and
display the serial number and firmware version if it is connected.
7. If GyroView does not connect, check that you have the correct
COM port selected. You find this under the “DMU” menu.
8. If the status indicator says, “Connected”, you’re ready to go. If the
status indicator doesn’t say connected, check the connections
between the AHRS500CA and the computer; check the power;
check the serial COM port assignment on your computer.
9.
Let the AHRS500CA warm up for 90 seconds when first turned
on. This allows the Kalman filter to estimate the rate sensor
biases. Now you’re ready to calibrate the AHRS500CA.
7.3
Calibration Process
The BIT status display in GyroView will be used to indicate the progress of
the magnetometer compensation calibration. Four bits of the BIT status
display are used for evaluating the hard iron calibration:
Bits 9 and 10 comprise a two -bit field that shows the state of the
attitude algorithm in the AHRS500CA
Bit 11 shows the mag cal mode
Bit 13 shows the mag calibration data status
7.3.1
Starting the Calibration
If the power has been applied less than approximately 90 seconds, the Gyro
View BIT display will indicate that the AHRS500CA is initializing:
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