Microlab PRO-1 User Manual download pdf (Page 7)

GPX Pro 2

NOTE: if the GPX does not power up by pressing any button, try

pressing all four buttons simultaneously. If this does not power

up the GPX, then the internal rechargeable battery is probably

discharged and will need to be charged.

The GPX needs to acquire a good signal from at least 4 GPS satellites, and an EHPE (estimated

horizontal position error) of less than 5.00. You can see the status of the GPS signals in the lower

left corner of the main screen. You might find that you get better reception by moving the

mounting position of the GPX in your vehicle. The internal antenna is positioned above the 4-way

switch. Please note that you can purchase an optional external antenna that will allow placing

the antenna separate from the GPX and often can provide better reception.

If the GPX has been powered off for less than 2 hours, then when you power up the GPX, good

signal acquisition should occur within a few seconds (depending on "view of the sky"). If the GPX

has been powered off for more than 2 hours, signal acquisition can take as long as several

minutes.

NOTE: the GPX must be on the main screen (above) when

you start a Circuit race.

Once you have acquired a good signal, you can start racing. Out of the box, the GPX will not start

operating until you reach a speed of 50 miles per hour (this is adjustable via the menu system).

This will prevent capturing lots of “garbage” data while driving/riding through the pits. Once you

hit your starting speed, you will notice that the GPX switches to the “spinner” screen:

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Microlab PRO-1 User Manual Page 7