M12 Oncore Users Guide Supplement - deetc - isel

Input Command
Response Message
Motorola GPS Products
M12 Oncore User’s Guide Supplement
Revision 1.0 01/25/00
UTC/IONOSPHERIC DATA OUTPUT
Motorola Binary Format
• Poll Current UTC/Ionosheric Data:
@@BpmC
m mode 0 = output response once (polled)
1 = output response when either
UTC or ionospheric data changes
C checksum
• To above command:
@@CoabcdefghAAAAaaaadtwWnDC
lonospheric Data (see ICD-GPS-200, Table 20-X for scale factors)
a α 0 -128…+127 seconds
b α 1 -128…+127 seconds/semi-circle
c α 2 -128…+127 seconds/(semi-circle) 2
d α 3 -128…+127 seconds/(semi-circle) 3
e β 0 -128…+127 seconds
f β 1 -128…+127 seconds/semi-circle
g β 2 -128…+127 seconds/(semi-circle) 2
h β 3 -128…+127 seconds/(semi-circle) 3
UTC Data (see ICD-GPS-200, Table 20-IX for scale factors)
AAAA A 0 -2,147,483,648…+2,147,483,647 seconds
aaaa A 1 -8,388,608…+8,388,607 seconds/second
d ∆t LS -128…+127 seconds
t t ot 0…602,112 seconds
w WN t 0…255 weeks
W WN LSF 0…255 weeks
n DN 1…7 days
D ∆tLSF -128…+127 seconds
C checksum
Message Length: 29 bytes
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