User Guide

Satellite-based augmentation systems, such as WAAS and

EGNOS, are supported to yield improved accuracy.

Both the LVTTL-level and RS232-level serial interface are

provided on the interface connector. Supply voltage of 3.3V,

or 3.8V~12V are supported.

1.2 Features

• 20 parallel channel GPS receiver

• 4000 simultaneous time-frequency search bins

• SBAS (WAAS, EGNOS) support

• -159dBm tracking sensitivity

• < 8 second hot start

• < 40 second cold start

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.