User Guide
8
SECTION 1
INTRODUCTION
1.1 OVERVIEW
Fast Acquisition Enhanced Sensitivity
20 Channels “All-In-View” Tracking GPS Sensor Module
The receiver continuously tracks all satellites in view and
provides accurate satellite positioning data. The HI-204
III
is
optimized for applications requiring good performance, low
cost, and maximum flexibility; suitable for a wide range of
OEM configurations including handhelds, sensors, asset
tracking, PDA-centric personal navigation system, and
vehicle navigation products.
Its 20 parallel channels and 4000 search bins provide fast
satellite signal acquisition and short startup time. Tracking
sensitivity of -159dBm offers good navigation performance
even in urban canyons having limited sky view.
APPENDIX B
DEFAULT VALUES
The product has the following factory preset default values:
Datum:000 (WGS-84)
NMEA Enable Switch:GGA ON
GLL ON
GSA ON
GSV ON
RMC ON
VTG ON
Chec ksum ON
Baud Rate:4800 Baud
Elevation Mask:5 deg rees
DOP Mask:DOP Select: Auto
GDOP: 20
PDOP: 15
HDOP: 8
Receiver Operating Mode:Nor mal Mode (without 1PPS)
Commands can be issued to the HI-204L to change the settings of the
receiver. The new settings will remain effective on next power-on as long
as the on-board rechargeable backup battery is not discharged. After
the backup battery is discharged, factory preset default settings will be
used.