Table of Contents
Advertisement
SECTION 2
OPERATIONAL CHARACTERISTICS
This section describes the basic operational characteristics
of the GPS 30/30 SL. Additional information regarding
input and output specifications are contained in Section 4.
2.1 SELF TEST
After input power has been applied to the GPS 30/30 SL
and periodically thereafter, the unit will perform critical self
test functions and report the results over the output
channel(s). The following tests will be performed:
1) RAM check
2) ROM test
3) Receiver test
4) Real-time clock test
5) Oscillator check
In addition to the results of the above tests, the GPS 30/30
SL will report software version information.
2.2 INITIALIZATION
After the initial self test is complete, the GPS 30/30 SL will
begin the process of satellite acquisition and tracking. The
acquisition process is fully automatic and, under normal
circumstances, will take approximately 2 minutes to achieve
a 2D position fix and 2.5 minutes for 3D fixes (15 seconds
if ephemeris data is known). After a position fix has been
calculated, valid position, velocity and time information will
be transmitted over the output channel(s).
Like all GPS receivers, the GPS 30/30 SL utilizes initial data
such as last stored position, date and time as well as
6
Advertisement
Table of Contents
