GLOBALSAT ET-314 GPS Engine Board User Manual
Page 18
ET-314AC
High Performance GPS Engine Board
2010/4/1
- 18 -
Mode
01
0 = Set Rate, 1 = Query one time
Rate 00
sec
Output Rate, 0 = Off, 1-255 = seconds between
messages1
CksumEnable 01
0=Disable Checksum, 1=Enable Checksum
.Checksum *25
n
End of message terminatio
Table B-7 Messages
Value Description
0 GGA
1 GLL
2 GSA
3 GSV
4 RMC
5 VTG
6
MSS (If internal beacon is supported)
7 Not
defined
8
ZDA (if 1PPS output is supported)
9 Not
defined
Note – In TricklePower mode, the update rate specifies TricklePower cycles rather than
seconds. If the TP cycle is set at 5 seconds, then an update rate of 2 means to output the
message every 2 cycles, or 10 seconds.
E). LLA Navigation lnitialization ID: 104 Parameters required to start using Lat/Lon/Alt
This command is used to cause a restart of the receiver, and to specify the type of restart.
Optionally, it may also initialize position (in lattitude, longitude, and altitude), clock drift, GPS Time
Of Week and GPS Week Number. This enables the receiver to search for the correct satellite
signals at the correct signal parameters. Correct initialization parameters enable the receiver to
quickly acquire signals.
For software that does not support initializing data (GSW3, GSWLT3, SiRFXTrac), attempting to
include initializing data may cause unpredictable results. Do not set the initialize-data bit in the
ResetCfg word..
Table B-8 contains the input values for the following example:
Start using known position and time.
$PSRF104,37.3875111,-121.97232,0,96000,237759,1946,12,1*07