Novatel SMART ANTENNA user manual Non Volatile Memory, Chapter Operation

Chapter 3 Operation

The receiver is in Navigation mode whenever sufficient satellite information and measurement data is available to produce a GPS fix. When the receiver has a valid position, the Nav Mode field in StarView’s LLH Solution, or XYZ Solution, window shows Nav 2-D, Nav 3-D, Diff. 2-D or Diff. 3-D. If it shows Initialized there is no valid position yet.

The SMART ANTENNA uses a comprehensive message interface. Input messages can be sent to the receiver using the Xmit Msg menu in StarView.

The following information is important when selecting commands:

1.You can send a message request using one shot (Normal mode) or continuous (Special mode) by selecting Xmit Msg General Message Request in StarView.

2.There is an option in StarView to save all messages transmitted by the receiver into a file. Select File/Port Save Data after you have finished selecting messages in Step #2 above.

The SUPERSTAR II Firmware Reference Manual provides the available messages and parameters that the SMART ANTENNA uses. See also Section B.2, StarView Software Installation starting on Page 45 and refer to the StarView User Manual for more information on the StarView program.

The receiver’s software resides in read-only memory. As such, the unit “self-boots” when turned on and undergoes a complete self-test, see Section 3.6.2, Operational States starting on Page 24. If a persistent error develops, please contact your local NovAtel dealer first. If the problem is still unresolved, please contact NovAtel directly through any of the methods in the Customer Service section on Page 10.

3.3Non Volatile Memory

The receiver stores different types of information used to accelerate the TTFF and to configure the I/O in NVM. See Table 3 below for a partial list of the data stored in NVM.

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:
RS-232 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

Table 3: Non-Volatile Memory Data

22 SMART ANTENNA User Manual Rev 6