Beijing Sdi Science & Technology Co., Ltd.

SDI-151 is a North seeker with digital display,constituted with dual degree of freedom dynamically tuned gyro,mechanical transmission and signal decoding circuit.Dual degree of freedom gyro has two basic features, procession and stable spin axis .Rotation axis of gyro remains the orientation relative to inertial space, oppositely, the earth rotates for its angular velocity . If take the earth as standard, the gyro's axis will be found rotating relative to the earth. Therefore, the gyro can track and measure the angular velocity of the earth.North seekers take advantage of this different component of angular velocity on X and Y axis, then get the reference axis position info/then get the system's position info by the rate difference on X and Y sensitive axis. Feature 1.Easy to operate 2.Automated north-seeking 3.With digital display 4.Meet vehicle-mounted environment Applications 1.Antenna positioning 2.Vehicle positioning 3.Radar positioning Performance Azimuth measurement range 0°~360° Azimuth measurement accuracy 0.06°1s Azimuth resolution 0.01° North seeking time 3min Prepare time 10min Operation state static Tilt angle measurement range(option) ±8° Tilt angle measurement accuracy(option) ±0.06° Digital display LCD Communication ports Serial ports RS-422/RS-232 Baud rate 9600bps Environmental Operating temp -40?~60? Bump 3g 8~11ms half-sine wave Electrical Input voltage 24~36VDC Operating current 1A Physical Size 180×170×185 mm Weight

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