Cypress Chameleon CTM-15X Specifications download pdf (Page 158)

Open CTM (Revision D)

158

Report Messages

Where:

hhmmss.ss is the UTC time in hours, minutes, seconds, and decimal seconds

v is the data validity flag: A = valid current data, B = valid stored data, V = invalid current data, W = invalid

stored data

llll.llll is the position latitude in degrees, minutes and decimal minutes

a is N(orth) or S(outh)

yyyyy.yyyy is the position longitude in degrees and decimal degrees

b is E(ast) or W(est)

ccc.c is the horizontal velocity in knots

ddd.d is the heading in degrees (relative to true north)

ddmmyy is the day, month and year

e is the positioning system mode indicator (NMEA 0183 v3.0 only): A = autonomous mode, D =

Differential mode, E = Estimated (dead reckoning) mode, M = Manual input mode, S = Simulator mode, N

= Data not valid. Note: The CTM-15X internal GPS module supports autonomous mode only.

hh is the message checksum

Examples:

NMEA 0183 v2.0:

$GPRMC,001207.00,A,4911.2236,N,12254.4779,W,012.3,201.0,170109,,*2D

NMEA 0183 v3.0:

$GPRMC,222414.00,A,4915.3920,N,12259.8072,W,000.2,242.0,211210,,,A*49

9.10 Message Type 84, $GPGSA

Standard NMEA message containing GPS receiver mode, ID of satellites used in the fix, and Dilution of

Precision (DOP) values.

Message format is:

$GPGSA,a,b,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,p.p,h.h,v.v,*hh<CR><LF>

Where:

a is the receiver mode: A = automatic; M = manual (select 2D or 3D)

b is fix mode: 1 = fix not available; 2 = 2D; 3 = 3D.

xx is the ID of each satellite used in the fix (unused are 00)

p.p is the Percent DOP value

h.h is the Horizontal DOP value

v.v is the Vertical DOP value

hh is the message checksum

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Cypress Chameleon CTM-15X Specifications Page 158