Novatel OM-20000077 Default Configuration, Non Volatile Memory, Non-Volatile Memory Data

Chapter 3 Installation

3.5.1Non Volatile Memory

The receiver stores different types of information used to accelerate the TTFF and to configure the I/O in NVM. See Table 5 below for a partial list of the data stored in NVM.

	Table 5: Non-Volatile Memory Data
Parameter			Notes
ALMANAC		The most recent almanac
LAST POSITION		Position in NVM is updated at different rates depending on the
		application. The last known position is always kept in battery back-
		up SRAM.
DGPS CONFIGURATION		Differential GPS configuration
		Contains the following configuration information:
TTL CONFIGURATION		1.	Mode of operation	4. Time Alignment Mode State
		2.	Baud Rate: 300 to 19200	5. Mask Angle
		3.	Default Binary message list	6. Datum

3.6Default Configuration

Below is the SUPERSTAR II’s default configuration with no valid NVM elements:

Protocol on port #1:	Binary
Baud Rate on port #1:	9600
Protocol on port #2:	RTCM-104
Baud Rate on port #2:	9600
DGPS Correction Timeout:	45 seconds
Default Message List:
Binary:	Navigation Status User Coordinates (Message ID# 20) @ 1Hz
NMEA:	GGA @ 1Hz
Time Align Mode:	ON

1. The data contained in NVM is always used if the DISC_IP2 is left unconnected or tied to HI logic.

2.The default data transfer rate is 9600 bps unless your receiver model has Carrier Phase Output (CP) capability in which case it may be 19200. A list of models is in Appendix A of the L1 GPS Firmware Reference Manual and in our Price List available from the Sales side menu of our website at www.novatel.com.

3.If DISC_IP2 is tied to LO logic, the default ROM configuration will be used and the following parameters will not be read from NVM:

Position

Almanac

Time

UTC Correction and IONO Parameters

TCXO Parameters

26 SUPERSTAR II User Manual Rev 3