GAPS
-
User Guide
$__GLL
$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A,a*ck
llll.ll
a
yyyyy.yy
a
hhmmss.ss
A
*ck
Latitude
N : North S : South
Longitude
E : East W : West
UTC time of position
A= data valid; V= data invalid
Hexadecimal checksum ('*' precedes the checksum value)
Important notes
●
Very often for TRIMBLE GPS the 1 PPS signal must be associated to the UTC telegram
and not the ZDA. If the iXblue inertial navigation system receives at the same time ZDA,
UTC and RMC time telegram it uses the telegram with the following priority: UTC, ZDA,
RMC.
●
For TRIMBLE GPS, the proper settings is Time + PPS Rising while using PPS + UTC.
Avoid using ZDA only on TRIMBLE GPS.
●
If no GST string is received, the quality factor is interpreted by INS as follow. At input INS
converts quality factor to standard deviation on position according to correspondence
table.
H.2
Pressure Datagram PMEVL
$PMEVL
Data received: Pressure value
$PMEVL,XP,MEA,C,VVVVV*cc<CR><LF>
XP
MEA
C
VVVVV
*cc
is the transponder ID (from 001 up o 128)
is a mnemonic
is the analog channel, C = 8
is the Pressure value
VVVVV = 0 to 65535 dBars (integer)
or VVVV.V = 0.0 to 9999.9 dbars (float)
is the checksum
Conversion of the pressure to immersion:
●
G is the gravity: 9.79337750716075
●
D is the water density: 1.026952
●
A is the atmospheric pressure in mb: 1015.0
●
P is the pressure in mB
MU-GAPS-AN-005-H - November 2019
179
Summary of Contents for GAPS
Page 1: ...GAPS Positioning System User Guide...
Page 2: ......
Page 22: ...GAPS User Guide Figure 7 HiSys hoisting system 22 MU GAPS AN 005 H November 2019...
Page 112: ...GAPS User Guide Figure 52 Mobile properties window 112 MU GAPS AN 005 H November 2019...
Page 228: ...PAGE INTENTIONALLY LEFT BLANK 228 MU GAPS AN 005 H November 2019 GAPS User Guide...
Page 229: ...GAPS User Guide L GAPS Antenna Mechanical Drawing MU GAPS AN 005 H November 2019 229...
Page 231: ...GAPS User Guide N GAPS BOX Mechanical Drawing MU GAPS AN 005 H November 2019 231...
Page 232: ...GAPS User Guide O Rackable GAPS BOX Mechanical Drawing 232 MU GAPS AN 005 H November 2019...
