Holux GM-305 - Manual (Page 17)

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Chapter 4 FUNCTION DETAIL IN PAGES
I. SATELLITE PAGE
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.
B. Cold Start
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.
C. Simulation
Please refer to page 13 as Fig. 3-2-1 and Fig. 3-2-2.
D. Change Datum
Explorer provides 219 map datums. You may change it. Detailed datums please refer to
Appendix A. After turned on Explorer , 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