Please also note that when using any GPS equipment, a clear sky view is important. Objects in the surrounding area
such as tall buildings or trees can block the GPS signal causing a reduction in the number of satellites being tracked, or
introducing reflected signals that can decrease the accuracy of the system. Note that clouds and other atmospheric
conditions do not affect the VBOX Micro’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 VBOX 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 VBOX Micro is having trouble locking onto satellites, which typically occurs if the VBOX Micro 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.
Manually
Press and hold the square button ’■’ on the side of the VBOX Micro for five seconds. The unit will then beep to indicate
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_VBOX_Micro_Satellite_lock
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