introducing reflected signals that can decrease the accuracy of the system. Note that clouds and other atmospheric
conditions do not affect the PerformanceBox Sport’s performance.
GPS antennas require a ground plane to operate correctly. This helps to reduce unwanted reflections of the GPS signal
caused by nearby objects, and usually the metal roof of a vehicle performs this function. However, if a test requires an
antenna to be placed either off the vehicle, or on a vehicle that does not have a metallic roof, a special
ground plane
antenna must be used. This has an internal ground plane and can operate perfectly without the need for mounting on a
metal surface. Ground plane antennas are available from your distributor (part number RLVBACS065).
Coldstart
A GPS coldstart forces the GPS engine to reset its downloaded almanac of current satellite positions. This can be useful
if the PerformanceBox Sport is having trouble locking onto satellites, which typically occurs if the PerformanceBox Sport
has not been used for several weeks or if it was last used a long distance (over one thousand miles) away from the
current location.
After performing a GPS coldstart leave the PerformanceBox Sport powered up in a static location where the antenna
has an unobstructed view of the skies, for at least fifteen minutes.
Once the PerformanceBox Sport has downloaded the new almanac it will reacquire satellites in noisy situations (such as
near trees, buildings and under bridges) much more quickly. It will also acquire satellite much more quickly on power-up.
There are two ways to perform a GPS coldstart on the PerformanceBox Sport, one with and one without the use of a
computer.
Manually
Press and hold the square button ’■’ on the side of the PerformanceBox Sport for five seconds. The unit will then beep
to indicate that the GPS coldstart is underway.
Via Software
To coldstart the GPS engine in the PerformanceBox Sport using a computer, connect the PerformanceBox Sport to the
computer via USB cable and run the PerformanceBox Sport set up software, is supplied with the unit. Press ‘Read
Settings’ to start communications, then open the ‘Options’ menu and select the ‘ColdStart’ option. The unit will beep to
confirm that the cold start is being performed.
https://en.racelogic.support//Product_Info/Legacy_Products/PerformanceBox_Sport/PB_Sport_-_User_manual/03_-_PB_Sport_-
_Satellite_lock
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