High Performance Laser Gyroscope

ER-RLG-90 (≤0.003°/h)
1. Bias stability: ≤0.003°/h;
2. Bias repeatability: ≤0.001°/h;
3. Angular random walk: ≤0.0003°/√h.

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Introduction

Main parameters of gyroscope

Bias stability	≤0.003°/h (100s Standard deviation)
Bias repeatability	≤0.001°/h
Angular random walk	≤0.0003°/√h
Magnetic field sensitivity	≤0.001°/h/Gs
Total error of scale factor	≤2ppm(1σ)
Measuring range	-400~400°/s
Start time	≤5s
Operating temperature	–40℃~+65℃
Storage temperature	–55℃~+85℃
Shock	30g/11ms(half-sine), 75g/6ms(sine)
Vibration	7.2g/5min (3 directions)
	Frequency(Hz)	10	100	200	300	600	1000	2000
	Power(g²/Hz)	0.1	0.4	0.1	0.02	0.005	0.00003	-6dB
Jitter frequency	320Hz~450Hz, the jitter frequency of type A, type B and type C gyroscopes decreases successively, which should be avoided in the design of system structure
Low pressure	Altitude 5000m
MTBF	15000h
Storage life	15a
Size	(147±1)mm×(125±1)mm×(58±1)mm
Weight	1.88±0.1kg
Power consumption	≤4W

Mechanical interface

Figure 1 Shape and mounting dimensions of gyroscope

Mass Center

laser gyro

Figure 2 Mass Center for gyroscope

Electrical interface

The electrical interface adopts J30J-37ZK socket, as defined in the following table.

Table 1 Interface definition

Node number	Name	Description
9;27	BTTL	Square wave output signal 2, TTL level, for phase detection
10;28	GND	Signal ground
11;29	ATTL	Square wave output signal 1, TTL level, for phase detection
12	PT1000-1	Platinum resistance 1
30	PT1000-2	Platinum resistance 2
13	PT1000-3	Platinum resistance 3
31	PT1000-4	Platinum resistance 4
14;32	PT1000-COM	4 platinum resistance common ground
15;33	GND	±5V Power supply ground, connected with the laser gyroscope housing
16;34	+5V	+5V Power supply
17;35	+15V	+15V Power supply
18;36	+15V_GND	+15V Power supply ground, isolation from the laser gyroscope housing
19;37	-5V	-5V Power supply
Other pins	Manufacturer reserve

Cautions for use

Gyroscope should be avoided by impact, knock;
Gyroscopes with the same jitter frequency should be avoided in the same inertial navigation equipment;
Pay attention to the use of spring pad when installing the gyroscope. It is recommended to use M5 hex socket screw with grade 9 (including) or above, and the recommended torque value is 7NM.