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Product Introduction

STG-120 is a fully solid-state, digital closed-loop, integrated three-axis fiber optic gyroscope. Based on the SAGNAC principle, it consists of an SLD light source, fiber coupler, photodetector, integrated optical phase modulator, fiber sensing coil, circuit, and structure. It is specially designed for miniaturized inertial measurement systems, featuring compact size, high precision, high reliability, and flexible structural design, and can be customized according to the structure designed by customers. TG-40 is the best choice for small inertial measurement systems!

Product Features

· Single 5V power supply, low power consumption

· Excellent full-temperature performance

· Excellent start-up performance: meets nominal indicators instantly after power-on, no warm-up required

· Excellent environmental adaptability, resistant to strong shock and vibration

· Interference fringe recognition technology, supporting full dynamic range cold start

· High reliability

· No dead zone

Applications

· Attitude and heading reference systems (AHRS)

· Small compass

Technical Indicators

Category	Indicator	STG-120H	STG-120C	STG-120D
Category	Indicator
Performance Indicators	Bias (°/h)	0.25	0.25	0.25
	Bias Stability① (°/h, 1σ)	0.003	0.005	0.005
	Bias Stability② (°/h, 1σ)	0.001	0.002	0.002
	Bias Stability③ (°/h, full temperature, 1σ)	0.005	0.01	0.01
	Bias Repeatability (°/h, 1σ)	0.001	0.002	0.002
	Bias Magnetic Sensitivity (°/h/Gs)	0.003	0.003	0.003
	Random Walk (°/h ½)	0.0002	0.0003	0.0003
	Scale Factor Nonlinearity (ppm)	2	2	2
	Scale Factor Asymmetry (ppm)	2	2	2
	Scale Factor Repeatability (ppm)	5	5	5
	Dynamic Range (°/s)	±300	±300	±300
	Start-up Time (s)	3	3	3
	Bandwidth (Hz, -3db)	≥200	≥200	≥200
Mechanical/Electrical Interface	Dimensions (mm)	Circuit Box: 60×60×28 Gyroscope Head: Ф120×30.9	Circuit Box: 60×60×28 Gyroscope Head: Ф120×30.9	Circuit Box: 60×60×28 Gyroscope Head: Ф120×23.2
	Weight (g)	<2300	<2300	<1450
	Room Temperature Steady-State Power Consumption (W)	≤4.5	≤4.5	≤4.5
	Supply Voltage(V)	5	5	5
	Operating Temperature (℃)	-45~+70	-45~+70	-45~+70
	Storage Temperature (℃)	-55~+85	-55~+85	-55~+85
	Vibration (1σ, 20Hz~2000Hz)	6.06g	6.06g	6.06g
	Shock (g, ms, 1/2sin)	30g, 6ms-8ms	30g, 6ms-8ms	30g, 6ms-8ms
	Communication Interface	RS422, etc.	RS422, etc.	RS422, etc.