Operation | Chapter 4 | |
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mode only. The receiver reports its current navigation
Your receiver must be a BASE model to act as a base station. 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.
a. Differential (Roving Unit Only)
The receiver operates in Differential mode when data from at least 4 satellites with adequate geometry and differential corrections and/or measurements exist to compute position, velocity and time outputs. This is the preferred navigation mode. Differential data is supplied to the receiver through the differential input port. Differential data can be received only on the COM2 serial data port.
b.
The receiver operates in
c. Base Station Nav (Base Station Unit Only)
The receiver operates in Base Station Nav mode once the time has been initialized and at least 4 satellites with adequate geometry can be used for navigation purposes. Once in this mode, only a change of configuration (rover mode requested) or a reset will cause the unit to leave this navigation mode. In this mode, the unit will have the ability to transmit the DGPS messages which are requested and allowed once its position is initialized. See also Section 4.4, Configurable Parameters starting on Page 31 for position initialization details.
5.Dead-Reckoning Mode
The receiver enters
6.Fault Mode
The receiver enters Fault mode during the period of time in which the receiver outputs are affected by one or more critical system faults. This mode supersedes all others and remains active until the next
4.6Built-In Status Tests
The receiver performs
The built in test monitors system performance and status to ensure the receiver is operating within its specifications. If an exceptional condition is detected, you are informed through one or more indicators. The receiver status system is used to configure and monitor these indicators:
•Message ID# 49, Receiver Status Data
•Message ID# 51, Initiated BIT Result
•Status LED on the
Please refer to the L1 GPS Firmware Reference Manual for details on the Message IDs above. See also Section 4.5.2, Operational States starting on Page 31 and status LED information may be found in this manual on Page 50.
SUPERSTAR II User Manual Rev 3 | 33 |