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FirstGPS Starter Kit User Guide
21
Using the Starter Kit
2
When the GPS engine is running, this menu item displays Stop GPS.
To stop the GPS engine, select this item. Stop GPS will also save
important parameters to Battery Backed-up RAM (BBRAM).
Cold Reset
Select Initialize / Cold Reset to restart the GPS engine and perform a
firmware reset after erasing all of the collected GPS data such
as the almanac and ephemeris. Cold resets result in a TTFF of
2to3minutes.
Warm Reset
Select Initialize / Warm Reset to restart the GPS engine and perform a
firmware reset after erasing the ephemeris from the collected GPS
data. Performing a warm reset assumes that you have operated the
MPM long enough to collect almanac information and calculate PVT.
A typical warm reset results in a TTFF of about 50 seconds.
Hot Reset
Select Initialize / Hot Reset to restart the GPS engine and perform a
firmware reset without erasing any collected GPS data. Performing a
hot reset assumes that you have operated the MPM long enough to
collect almanac and ephemeris information and calculate PVT. A
typical hot reset results in a TTFF of about 15 seconds.
Set 2D Ref Altitude
Select Initialize / 2D Ref Altitude to prompt for a reference altitude for
the receiver while operating in the 2D mode.
PPS Output
Select Initialize / PPS Output to enable the PPS output on the
MPM board.