High Quality Laser Gyroscope

ER-RLG-70 (≤0.005°/h)
1. Bias stability: ≤0.005°/h;
2. Angular random walk: ≤0.0008°/√h;
3. Bias repeatability: (≤0.002°/h)

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Introduction

Main parameters of gyroscope

Bias stability	≤0.005°/h (100s Standard deviation)
Bias repeatability	≤0.002°/h
Angular random walk	≤0.0008°/√h
Magnetic field sensitivity	≤0.001°/h/Gs
Total error of scale factor	≤3ppm (1σ)
Measuring range	-500~500°/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	420Hz~580Hz, 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	(102±1)mm×(93±1)mm×(54±1)mm
Weight	0.95±0.1kg
Power consumption	≤3W

Mechanical interface
Figure 1 Shape and mounting dimensions of gyroscope
laser gyro

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.

Node number	Name	Description
17;35	+15V	/
18;36	+15GND	Note that you can't connect to any other ground
15;33	5VGND	/
16;34	+5V	/
19;37	-5V	/
11;29	AOUT	TTL output
9;27	BOUT	TTL output
10;28	ABGND	/
14;32	TCOM	Platinum resistance common end
12	Platinum resistance TMP1	Gyro body, cathode attachment position
30	Platinum resistance TMP2	Gyro box body, under the light prism
13	Platinum resistance TMP3	Gyro body, near the pumping anode
31	Platinum resistance TMP4	Gyro box body, near the box wall
20;26	GND	/
Other pins	Factory retention	/

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 M4hex socket screw with grade 9 (including) or above, and the recommended torque value is 2.5NM.