Equinox Systems GEMINI Manuel d'utilisateur télécharger pdf (Page 79)

Gemini Users Manual 74

From the sign of the latitude, Gemini knows the hemisphere; northern latitudes are

"plus," and southern latitudes are "minus.” You should set your longitude and latitude

first, because the tracking direction in RA depends on the sign of the latitude.

5.3.10.9.1 Longitude

The "Longitude" display is as follows: "E/Wddd°mm’" where E/W = either E or W, ddd

= degrees, and mm = minutes. Each digit of the "Longitude" is scrolled to the correct

value using the DEC buttons. Pressing the RA+ button from the right-most digit enters

the "Longitude."

5.3.10.9.2 Latitude

The "Latitude" display is as follows: "+/-ddd°mm’" where +/- = either plus or minus,

ddd = degrees, and mm = minutes. Each digit of the "Latitude" is scrolled to the correct

value using the DEC buttons. Pressing the RA+ button from the right-most digit enters

the "Latitude."

5.3.10.9.3 Timezone

The "Timezone" display contains a list of time zones that can be scrolled through with

the DEC buttons and selected with the RA+ button.

5.3.10.9.4 Query GPS Receiver

Use this menu to get Longitude, Latitude and UTC Date/Time by querying a GPS

receiver connected to the serial port. This is the same function that occurs automatically

when Gemini is powered on.

5.3.10.9.5 Store Site

Execute “Geogr. Location→ Store Site→ Site #” (where # = 1 to 4) in order to store

Gemini’s currently set Longitude, Latitude, and Time Zone as one of four numbered user

sites. Once saved, any of the four sites can be retrieved by executing “Geogr. Location→

Load Site→ Site #,” further described below. If the current latitude and longitude are

different from those currently stored for the specified site number, the “Store Site”

command will change the name of that site to “User Site.” This can be edited using the

“Name site” command described below. However, if the latitude and longitude are the

same as those currently stored for that site number, the site name remains unchanged.

This is useful if you only want to change the time zone (to specify daylight savings time,

for example) without changing any other parameters for the site.

5.3.10.9.6 Load Site

Execute “Geogr. Location→ Load Site→ Site #” (where # = 1 to 4) in order to load one

of four possible user sites that were stored as previously described in section “5.3.10.9.5

Store Site” above. By default, sites 1-4 are predefined to be certain cities worldwide.

These are overwritten as you store you own sites.

5.3.10.9.7 Name Site

Use this menu item to enter a name for any of the stored site locations. To enter or

change characters in the name, use the RA+ and RA- keys to select the desired character

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Equinox Systems GEMINI Manuel d'utilisateur Page 79