EverMore GM-X205, User Manual

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EverMore Technology Inc.
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw
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4.2.7 EverMore Binary Output Message 0x04: DOP Data
Purpose
Outputs:
1 GPS time.
2 GDOP, PDOP, HDOP, VDOP, and TDOP.
3 Receiver navigation mode.
Format
Byte # Contents Range Size Scale Unit
1 Message ID = 0x04 Unsigned byte
2 ~ 3 GPS week 0 ~ 65535 Unsigned 16bit integer week
4 ~ 7 GPS tow 0 ~ 60479900 Unsigned 32bit integer 1/100 sec
8 GDOP 0 ~ 255 Unsigned byte 0.1
9 PDOP 0 ~ 255 Unsigned byte 0.1
10 HDOP 0 ~ 255 Unsigned byte 0.1
11 VDOP 0 ~ 255 Unsigned byte 0.1
12 TDOP 0 ~ 255 Unsigned byte 0.1
13 Navigation Mode
0 = no position fix
1 = 1D navigation
2 = 2D navigation
3 = 3D navigation
4 = 3D navigation
with DGPS
0 ~ 4 Unsigned byte