GPS R
ECEIVER
E
XT
A
NTENNA
GPS-610F
Settin
2.2 Serial Port Settings
The default configuration within the standard GPS firmware is the Standard configuration of
serial port:
Supporting 4800/9600 baud rate (Default Value : 9600), 8 data bits, no parity, 1 stop
9600)
bit, no flow control
Improve
2.3 Improved TTFF
In order to improve the TTFF (Time To First Fix), GPS-610F has been built with the back-up
battery (SEIKO) to support the RTC with a back-up power when no system power is available.
2.4 GPS Status Indicator
Non-
Non-Fixed mode : LED is always on
Fixed mode : LED toggle every second
6. Communication Specifications
Item
Interface
Bit rate
Start bit
Stop bit
Data bit
Parity
Transmission data
Update rate
Output sentence
Description
Full duplex serial interface
4800/9600/38400/115200bps (Optional, Default 9600),
1bit
1bit
8bit
None
SACII NMEA0183 Ver:3.01
1Hz
GGA/GSA/GSV/RMC/VTG (typ)
Table 2: Communication specifications
Multi-
Mitigation
2.6 Multi-path Mitigation
Multipath refers to the existence of signals reflected from objects in the vicinity of a receiver's
antenna that corrupt the direct line-of-sight signals from the GPS satellites, thus degrading
the accuracy of both code-based and carrier phase–based measurements. Particularly difficult
is close-in multipath in which the reflected secondary signals arrive only slightly later (within
about 100 nanoseconds) than does the direct-path signal, having been reflected from objects
only a short distance from the receiver antenna.
GPS610F deploys the advanced multi-path detection and suppression algorithm to reduce
multipath errors, the GPS signals themselves can be designed to provide inherent resistance
to multipath errors
DS-GPS610F-1
Jul 09
©2009
www.rfsolutions.co.uk
Page 5
RFSOLUTIONS [ RFSOLUTIONS.LTD ]
