The input axis of the azimuthgyro under this condition is vertical, and pendulum unit is nulled.
在这样情况下方位陀螺的输入轴是处于垂直位置，同时摆锤单元在零位。
2
There exists a slope drift in an integral gyro when it is used as an azimuthgyro, which may cause serious heading and position errors in the Inertial Navigation System (INS).
After that, rotating the sensitive axis of the gyro to point the true north, the instrument is working in the azimuth mode to constantly display azimuth angle of the carrier.