GPS Splitter 8 Way GPS Power Splitter iGS18

2. Serial port parameters
Open serial debug assistant software:

Serial number view:
Right‐click on "My Computer", select "Manage" Double‐click "Device Manager" and double‐click can see the connection port serial number is COM4.
NOTE: You must insert the serial connector can see the serial num.

3. Calculation of power off and read voltage instructions

Instruction consists of 8 hexadecimal format.

STX: 0x02 frame start flag;
DLE: 0x10 transcoding, for use in the frame start or frame end flag before, if DLE equal to the value data appears in the frame, the data retransmission protocol requires one to represent distinction,that is represented by two consecutive DLE data, a DLE represents the transcoding;
CMD: Communication instruction data type, including data communication instruction (0xF1) and control commands (0xF2) of two types;
Parameter: CMD communication instruction data content, data length;
ETX: 0x03 frame terminator flag (not included in the back of the validation data);
BCCL: binary BCC check code low 8;
BCCH: binary BCC code high 8.

Then DLE, STX and ETX three hexadecimal constant, which is the first 1,2,5,6 These four numbers are the same, you need to calculate the CMD, parameters, BCCH and BCCL four hexadecimal number.

Basic power off instruction:

 GEMS RF&MICROWAVE and GEMS NAVIGATION was established in 2007, professionally designs, products and sales of coaxial microwave devices and equipment. GPS indoor coverage systems and accessories, high-power coaxial attenuators, high-power coaxial load, we accumulated many years of designing and manufacturing experience, our own designed and product of GPS indoor coverage systems and related GPS power splitter and amplifier, GPS antenna and other products widely used in microwave communications, mobile communications, high-precision measurement, power, research institutions, colleges and universities, manufacturing and other fields.

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