User's Manual

93
A.5.7 DTM – Datum Reference
Local geodetic datum and datum offsets from a reference datum.
$--DTM,ccc,a,x.x,a,x.x,a, x.x,ccc*hh<CR><LF>
Field No.
Format
Description
Remark
1
ccc
Local datum
2
a
Local datum subdivision code
ignored
3
x.x, a
Lat offset, min, N/S
ignored
4
x.x, a
Lon offset, min, E/W
ignored
5
x.x
Altitude offset, m
ignored
6
ccc
Reference datum
A.5.8 EPV – Command or Report Equipment Property Value
$--EPV,a,cc,c--c,x.x,c--c*hh<CR><LF>
Field No.
Format
Description
Remark
1
a
Sentence status flag
2
cc
Destination equipment type
3
c--c
Unique identifier
4
x.x
Property identifier
5
c--c
Value of property to be set
A.5.9 GBS – GNSS Satellite Fault Detection
This sentence is used to support receiver autonomous integrity monitoring (RAIM).
$--GBS, hhmmss.ss, x.x, x.x, x.x, xx, x.x, x.x, x.x *hh <CR><LF>
Field No.
Format
Description
Remark
1
hhmmss.ss
UTC time of the GGA or GNS fix associated with
this sentence
2
x.x
Expected error in latitude
3
x.x
Expected error in longitude
4
x.x
Expected error in altitude
ignored
5
xx
ID number of most likely failed satellite
ignored
6
x.x
Probability of missed detection for most likely
failed satellite
ignored
7
x.x
Estimate of bias on most likely failed satellite
ignored
8
x.x
Standard deviation of bias estimate
ignored