ET-2A North-seeker mainly constitutes by the high accuracy tuning gyro of biaxial power. By measuring X Y axis weight of the Earth's rotation speed, determines the true north. It is insensitive to magnetic fields and other environmental factors.

 1 .Specifications

Supply Voltage	+24 ～+36Vdc
Current	<1A
Work mode	Static state
Digital show	5 figures
Range	0～360º
Accuracy	0.05º(1δ)
Resolution	0.01º
North Finding time	3min
Readiness time	10min
Weight	7kg
Operating Temp	-40℃～+50℃
Shock	3g, 8～11ms

 2. Output data format

Digital output         RS232

Baud rate              9600

Data format           1 start, 8date, 1 stop, no parity

Data frame format

AA	HL  HH	SUM
Header	Azimuth	Checksum

Azimuth            16 original code data    1bit= 0.01º

Checksum         Single-byte, which is the sum of 2 3 bytes

 3. Pin definition

1)       Power input

2)       Power ground

3)       RS232 TX

4)       RS232 RX

5)       Signal ground

6)       Control

7)       Control ground

8)       Other pins do not connect