70M Digital Gyroscope
Packaging and Delivery
This specification included the 70M digital instrument use conditions, sizes and installation,
main technical index, environmental characteristics, communication protocol, the
electrical characteristics etc..
2 conditions of use
2.1 power supply requirements
1):Power voltage: ± 5V
2): ripple ? 30mV
2.2 environmental conditions
2.2.1 range of working temperature: -40 ? ~ +60 ?;
The 2.2.2 standard atmospheric conditions (low pressure requirements can be
customized user requirements)
A) ambient temperature: 15 ? ~35 ?
Relative humidity: 20%~80% B);
C) atmospheric pressure: pressure test location.
3 Outline dimension and installation
3.1 Weight?? 220 ±10g;
3.2 extension line and interface
1) Length of extension line?230±20mm?packed with Varnished silk
2) Interface P/N?J30J-21ZKP?
4 Main technical index
The main technical index as following ?
performance and parameter of meter
Item Performance index Parameter Remark
1 Input span ?°/s? -300~+300
2 SF?sp/°/s? ?10000 Batch diifference<5%
3 SF/nonlinearity?ppm? ?100
5 SF repeatability?ppm? ?100
6 SF Repeatability?ppm? ?100
7 SF extreme difference?ppm? ?2000
8 Null bias?°/h? ?±3.5
9 Null bias stability?10s average??°/h? ?0.25
Null bias Repeatability?10s average?
13 Random work?°/s/ Hz ? ?0.0003
14 Start-up time?s? ?5
15 Preheat time?s? ?60
16 Continuous operating time?h? ?1
17 Threshold?°/h? ?0.25
18 Resolution ?°/h? ?0.25
5 communication protocol
5.1 transmission specification
The instrument data communication interface is in accordance with the serial
asynchronous RS-422 electrical interface standard, as shown in Figure 3.
1) Baud rate: 115200bps (on request);
2) data bits: 8bits;
3)Test digit: none;
4) Stop bit: 1bit, starting low and high latecomer
5.2 The communication format
1) Output information :output meter information, data rate of 400Hz (2.5ms);
2) bytes definition: total 7 byte, prefix is 0x80, meter angle incremental information is
4 bytes. Each byte high position is zero , starting from high byte ,than low byte,
status information is one byte , checking and one byte (meter information and status
information byte summed (the highest bit of the status information is not involved in
accumulation ) take the low byte).
6 Electric characteristic
6.1 Power consumption
power consumption ?6W?
6.2 Insulating resistance
Under the condition of ?20??Insulating resistance R ? M? iso 20 ?
6.3 interface definition
Interface definition as following?
Ling’ao Electronics Technology Co., Ltd is a professional high technology company, which offering different grade electronics and inertial navigation system, angle measurement products. We are now an agent of gyroscopes.
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