Holux gm-305 Manual Do Utilizador

 

 

17

 

        A. Adjust Contrast 
       (i) Press direction key “

” or ” ” to adjust the contrast of screen as Fig. 3-3-4, “

” for 

 

              lighter and ” ” for darker. 

              (ii) Press “

  ”

to confirm or

“ ” to escape. 

This function is to clear obsolete or incorrect satellite data stored in its memory. If you cannot 
receive satellite signals to identify your position after turning on for a few minutes, you may 
turn off and turn on again. The obsolete data and uneven distribution of satellites may cause 
poor signal receiving. So when doing this action for two or three times but fail, and if you are 
not under shade in the forest, close to a high building or at a side of a sharp mountain, i.e. you 
do have a clear view to the sky, please select Cold Start and press “

  ”

to confirm. It may 

help you got position identified quicker. 

Please refer to page 13

 

as Fig. 3-2-1 and Fig. 3-2-2. 

     

 provides 219 map datums. You may change it. Detailed datums please refer to 

      Appendix A. After turned on 

, the 1

st

 highlighted datum in the “Select A   

   Datum” page is the current datum used in the unit. 

        (i) Press “ ”, select change datum as Fig. 4-1-1 and press “

  ” as Fig. 4-1-2. 

      (ii) Press “ ” to start searching a datum by alphabet sequence as Fig. 4-1-3. 

 
 
 
 
 
 
 
 

        Note: If you turn on the unit, select Change Datum and move marked datum without   
                    pressing “

  ”, when you switch to other page then switch back to satellite page and 

                    select Change Datum, the hightlighted datum is not the one used in the system   
          because you did not change the datum in above actions. 

 

 

Fig. 4-1-1 

Fig. 4-1-2 

Fig. 4-1-3