LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2
Released
Appendix
Page 60 of 68
o
FixNow Mode: Low power modes are supported with FW 6.00 or ROM 6.00. For migration of
FXN functionalities consult the
u-blox 5 Firmware Version 6.00 Release Note
o
No UTM (Universal Transverse Mercator Projection).
o
No RTCM protocol for DGPS support.
o
Raw Data support with LEA-5
T
only supported with FW 6.00 and above.
For more information on u-blox5 firmware version 4.00 or later, refer to:
http://www.u-blox.com/customersupport/ublox5_fw.html
Check A.2 Software migration
A.2
Software migration
Software migration from ANTARIS
4 to a u-blox5 GPS receiver is a straightforward procedure. Nevertheless there
are some differences to be considered with u-blox5 firmware version 5.00. Like its ANTARIS 4 predecessor,
u-blox 5 technology supports UBX and NMEA protocol messages. Backward compatibility has been maintained
as far as possible. New messages have been introduced for new functions. Only minor differences have to be
expected in the UBX-NAV and UBX-AID classes of the UBX protocol and for the standard NMEA messages such
as
GGA, GLL, GSA, GSV, RMC, VTG
and
ZDA
.
ANTARIS
4
u-blox5
Remarks
UBX-CFG-NAV2
UBX-CFG-NAV5
UBX-CFG-NAV2 has been replaced by UBX-CFG-NAV5. The new message has
additional features.
The default dynamic platform is “Portable”. This platform is rather generic
and allows the receiver to be operated in a wide dynamic range covering
pedestrians, cars as well as commercial aircrafts. Automotive applications
such as first-mount navigation systems may better utilize the “Automotive”
platform, which is better geared to the dynamics of land vehicles but is only
of limited use in airborne and high-dynamics environments.
UBX-CFG-NAV5 does not support following features:
Almanac Navigation
Navigation Input filters
UBX-CFG-NAV5 has a message length of 36 Bytes (40 Bytes for UBX-CFG-
NAV2)
UBX-CFG-NAV5 FixMode is set by default to “Auto 3D/2D” as for ANTARIS4.
Check the u-blox 5 Receiver Description including Protocol Specification [4] if
this mode needs to be changed.
UBX-CFG-MSG
UBX-CFG-MSG
No support for multiple configurations in one UBX-CFG-MSG command
UBX-CFG-RXM
N/A
Contrary to ANTARIS 4, u-blox5 does not need selecting GPS acquisition
sensitivity mode (Fast, Normal, High Sens and Auto mode) since the
acquisition engine is powerful enough to search all satellite in one go.
FixNow mode is not available anymore. Low power modes are planned for
Q1/09. Contact your local u-blox support team should you need further
information.
PUBX,01
N/A
Other UBX or NMEA messages can be used to replace this message
UBX-NAV-POSUTM
N/A
UBX-CFG-TP
UBX-CFG-TP
u-blox 5 offers the possibility to activate Timepulse signal without GPS fix.
UBX-CFG-ANT
UBX-CFG-ANT
Antenna Open Circuit Detection: The default setting for LEA-4S and LEA-4A
was “enabled”. With all LEA-5 modules the default setting is “disabled”.
Automatic Short Circuit Recovery: With ANTARIS 4 this was “disabled” by
default. With u-blox 5 the default setting is “enabled”.
UBX-CFG-RATE
UBX-CFG- RATE
Set to 1 with u-blox 5
UBX-CFG-TMODE
UBX-CFG-TMODE
With u-blox 5 FW 6.00 and above it is no longer necessary to configure the
number of satellites in UBX-CFG-NAV to 1 to enable the timing mode. This is
performed automatically.
UBX-MON-HW
UBX-MON-HW
Message length has changed as the number of pins is different with u-blox5.
