Hemisphere GPS A222, Руководство пользователя

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A222 User Guide Chapter 3 – Using A222 Page 14 of 20
Default Parameters
Setting Description
DGNSS Application : Newest GNSS FW found at www.hgnss.com
Serial ports A and B Baud rate : 4800, 9600, 19200, 57600, 115200
Data bits: 8 Parity: None Stop bit: 1
Interface level: RS-232
GNSS messages Type: Hemisphere GNSS binary, NMEA 0183, NMEA 2000
Update rate: 1 Hz to 20 Hz *
Max DGNSS age: 259,200 sec
Elevation mask : 5°
*With Activation Code
Configuring the A222
You can configure the A222 through the serial port using Hemisphere GNSS commands. For example, you can
select the:
• Baud rate
• NMEA 2000 data message to output on the dual serial ports and the update rate of each message
Note: Use the $JSAVE command to save changes you make to the A222’s configuration for the changes to be
present in subsequent power cycles.
For information on Hemisphere GNSS commands refer to the
Hemisphere GNSS Technical Reference .
Auto-Seed
Auto-Seed allows the end user to shut down their device in a static position for any extended period of time. If the
antenna remains stationary at shut down, the position status and Atlas convergence will remain in the device
memory and resume upon start-up. This enables the Atlas solution to regain its accurate position within two
minutes of start-up.
Auto-seed provides quick response positioning and enables the customer to get to work faster and with confidence
in the GNSS solution.