Performance veri
fi
cation
Lock to GPS or GLONASS
signal from antenna test
Perform the following procedure to check that the internal GPS system locks onto
the minimum allowable signal. This test requires a reference GPS7 unit.
CAUTION.
The following procedure requires a reference system with a GPS7
module. The type of GPS receiver in the reference system must match the type of
GPS receiver in the DUT system. (See page 76, How to determine which GPS
receiver is installed in your instrument.)
1.
Set the antenna power as needed by the antenna in the test system.
2.
Connect an antenna splitter to the GPS or GLONASS input signal feed.
3.
Connect one output of the splitter to the GPS or GLONASS antenna input of
the reference unit and then power on the unit.
4.
Connect the other output of the splitter to the
GPS ANT
input of the SPG8000
under test.
Figure 22: Setup for the GPS or GLONASS signal lock from antenna test
80
SPG8000 Speci
fi
cations and Performance Veri
fi
cation
