Tektronix SPG8000 Technical Reference page 95

SPG8000 Specifications and Performance Verification
5. If necessary on the SPG8000 under test, set the GPS Constellation type to
GPS & GLONASS:
NOTE. You need to perform the following step only if your Option GPS module
can receive both GPS and GLONASS signals.
a. Press the REF button to access the REFERENCE menu.
b. Use the up (▲) or down (▼) arrow button to select GPS
CONSTELLATION.
c. Use the left (◄) or right (►) arrow button to select GPS & GLONASS.
d. Press the ENTER button to make the selection.
6. If necessary on the reference system, set the GPS Constellation type to GPS
& GLONASS:
NOTE. You need to perform the following step only if your Option GPS module
can receive both GPS and GLONASS signals.
a. Press the MODULE button to navigate to the GPS7 module.
b. Use the up (▲) or down (▼) arrow button to select GPS SETUP.
c. Press the ENTER button.
d. Use the up (▲) or down (▼) arrow button to select GPS
CONSTELLATION.
e. Use the left (◄) or right (►) arrow button to select GPS & GLONASS.
f. Press the ENTER button to make the selection.
7. Check the signal quality on the reference unit as follows:
a. Use the up (▲) or down (▼) arrow button to select STATUS from the
GPS7 module menu.
b. Use the left (◄) or right (►) arrow button to select Signal Quality.
c. If the signal quality does not already show "Locked", check that the signal
quality changes from No Signal to Low Signal to Acquiring satellites to
Adjusting phase to Locked.
NOTE.
It is okay if some steps are skipped. Depending on the signal level, it
may take from a few seconds to several minutes to leave the "No Signal" state.
Performance verification
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