Closed-loop FOG

PRODUCT

Instructions of FOG-60 Fiber-Optic Gyroscope

1.Specifications

Testing of specifications of FOG-60 single-axis fiber-optic gyroscope follows GJB 2426A-2004，specifications are shown as below：

Power consumption： ≤5W (+5V current≤0.6A，-5V current≤0.3A)；

Bias stability in all temperature： ≤ 0.5°/h；

Bias repeatability in all temperature： ≤0.5°/h；

Scale factor nonlinearity： ≤100ppm;

Measurement range： ≥±350(°)/s;

Operating temperature： -40℃~+60℃

2．Electric Interface

2.1 Power supply voltage： ± 5V（Ripple ≤30mV）；

2.2 Electric connector:J30J-21ZKP，refer to Table 1 for definition of each node;

2.3 Cable length ：200mm～250mm；

Table1 Node Definition

3.Communication Protocol

Communication parameters of the fiber-optic gyroscope follow the standard of RS-422, communication parameters are shown as below ：

Bound rate：230400bps；

Data bits：8bits（LSB first，MSB last）；

Parity：none；

Stop bits：1bit

FOG-60 transmits data through RS-422 at the speed of per 0.5ms .Data format is shown in Table 2.

Table 2 Data Format

Data Domain1	Byte1	Frame head（Beginning of a frame）	0x80
Data Domain2	Byte2	The most significant byte of angular velocity	Each byte in this data domain has only 7 bits of data , the most significant bit of each byte is 0; angular velocity data with no dimension is expressed by a 4-byte signed integrity, the most significant byte comes first,and the least significant byte comes last.
	Byte3	The second most significant byte of angular velocity
	Byte4	The second least significant byte of angular velocity
	Byte5	The least significant byte of angular velocity
Data Domain3	Byte6	Temperature data	Temperature data is expressed by one byte of signed integrity with the unit of ℃.
Data Domain4	Byte7	Checksum	The lowest Byte of the sum of Byte2~6.

4. Mechanical Characters

Mass：≤200g;

Outline dimension and mounting dimension：Refer to Fig. 1;

Mounting Holes：4×Φ3.2 via holes;.

Mounting surface flatness：0.015mm/100mm;

Surface preparation：Anodic oxidation.

Download：FOG-60.pdf