Globalsat ET-314 GPS Engine Board Инструкция по эксплуатации онлайн [16/22] 88447

ET-314AC

High Performance GPS Engine Board

2010/4/1

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Table B-3 Reset Configuration Bit Map

Bit Description

0☆

Data valid flag: 1 = Use data in ECEF X, Y, Z, Clock Offset, Time of Week and Week

number to initialize the receiver; 0 = Ignore data fields

1 Clear ephemeris from memory: blocks Snap or Hot Start from occurring

2 Clear all history (except clock drift) from memory: blocks Snap, Hot, and Warm Starts

Factory Reset: clears all GPS memory including clock drift. Also clears almanac stored

in flash memory

Enable Nav Lib data (YES = 1, NO = 0) ★

☆ For software that does not support initialized data (GSW3, GSWLT3, SiRFXTrac) setting this

bit may cause unpredictable results. Do not attempt to use initializing data.01

★ If Nav Lib data are enabled, the resulting messages are enabled: Clock Status (Message ID 7),

50BPS (Message ID 8), Raw DGPS (Message ID 17), NL Measurement Data (Message ID 28),

DGPS Data (Message ID 29), SV State Data (Message ID 30), and NL Initialized Data

(Message ID 31). All messages sent at 1 Hz. If SiRFDemo is used to enable Nav Lib data, the

bit rate is automatically set to 57600 by SiRFDemo.2

Table B-4 Reset Configuration - SiRFLoc Specific

Decimal Description

00 Perform a hot start using internal RAM data. No initialization data is used.

01 Use initialization data and begin in start mode. Uncertainties are 5 seconds time

accuracy and 300 km position accuracy. Ephemeris data in SRAM is used.

02 No initialization data is used, ephemeris data is cleared, and warm start performed

using remaining data in RAM.

03 Initialization data is used, ephemeris data is cleared, and warm start performed using

remaining data in RAM.

04 No initialization data is used. Position, time, and ephemeris are cleared, and a cold

start is performed.

08 No initialization data is used. Internal RAM is cleared and a factory reset is performed.