FG-70/70C/H single-axis fiber optic gyroscope
Zero bias stability ≤ 0.1/0.05°/h；Dimensions (mm): 70x70x30；Weight (g): 200+10

FG-70/70C/H single-axis fiber optic gyroscope

◾ Product introduction
FG-70/70c /H single-axis fiber gyroscope is an all-solid-state high-precision digital closed-loop high-precision single-axis fiber gyroscope integrating optics, machinery and electricity. Based on SAGNAC principle, it is composed of SLD light source, optical fiber coupler, photoelectric detector, integrated optical phase modulator, optical fiber sensing ring, circuit and structures.
Type C is iterated on the basis of FG-70 fiber optic gyroscopev with high stability, high reliability and higher performance indicators. H type uses higher grade components, more stringent production test process to achieve the level of navigation.
It is widely used in navigation guidance and control field.

◾ Product features
• Single 5V power supply
• Update rate up to 4000Hz
• Excellent full temperature performance
• Excellent start-up performance, the nominal index can be reached when the power is turned on, and no preheating is required
• Excellent environmental adaptability, strong impact and vibration resistance
• Interference fringe recognition technology, supporting full dynamic range cold start
• High reliability
• No dead zone

◾ Typical applications
• High precision stable platform
• Positioning and orientation system
• North Finder
• Attitude indicator
• Optical fiber compass
• Strapdown inertial navigation system

◾ Performance indicators
• Turn-on time (s) 3
• Dynamic range (°/s) ±500
• Zero position (°/h) ≤0.5
• Bias stability ① (°/h, 1σ) ≤ 0.1/0.05/0.03
• Bias stability ② (°/h, 1σ) ≤ 0.03/0.015/0.01
• Bias stability ③ (°/h, 1σ) ≤ 0.1/0.08/0.05
• Bias repeatability (°/h, 1σ) ≤ 0.03/0.015/0.01
• Bias magnetic sensitivity ④ (°/h/Gs) ≤0.1/0.05/0.03
• Random walk (°/h 1/2) ≤ 0.01/0.005/0.003
• Scale factor nonlinearity (PPM) ≤10
• Scale factor asymmetry (PPM) ≤ 5
• Scale factor repeatability (PPM) ≤10
• Threshold (°/h) ≤0.05/0.03
• Resolution (°/h) ≤0.05/0.03
• Bandwidth (Hz) ≥500

◾ Physical/Electrical
• Power supply + 5 v
• Steady-state power consumption ≤2.5W
• Steady-state power consumption at full temperaturee ≤4W
• Instantaneous power consumption at startup ≤4W
• Dimensions 70 mm ×70 mm ×30 mm
• Weight 220g±10g/H type: 280g±10g
• Electrical form RS422

◾ Environmental adaptability
• Operating temperature -45℃ ± 70℃
• Storage temperature -55 ° C to -+80 ° C
• Vibration 6 .06g (RMS), 20HZ-2000Hz
• Impact 30g, 6ms-8ms
• Average trouble-free time 8000h