10-8

10.5 Cold Start
Cold start is automatically executed at initial power application or
when the GPS memory is cleared. This is done to acquire the Alma-
nac to receive a GPS satellite. You can also do the cold start manually
when the Almanac is too old to acquire a satellite; for example, when
the unit has not been used for about six months. Manually cold start-
ing the GPS receiver erases the existing Almanac to receive the cur-
rent one.
1. Press [MENU] and [8], and then press [↑] to set the cursor on
PAGE CHANGE (TO GPS INITIAL SETTINGS).
GPS INITIAL SETTINGS
PAGE CHANGE (TO INITIAL SETTINGS)
POSITION FIXING MODE = 2D 3D 2D/3D
GEODETIC DATUM = WGS-84 WGS-72 TOKYO NAD
EURO AUST MISC (007)
HDOP THRESHOLD =20 (2~99)
TIME DIFFERENCE = 09:00
LATITUDE = 34°00. 000 N
LONGITUDE = 135°00. 000 E
DELTA LATITUDE = 00. 000 N
DELTA LONGITUDE = 00. 000 E
SMOOTHING = 00~00 L/L-SPEED (0~99)
ANTENNA HEIGHT = 030 M
COLD START = NO YES
CST SATELLITE NO. = 01
MIN. ELEVATION ANGLE =05° (5~9)
DESELECT SAT NO. = — —
Figure 10-7 GPS INITIAL SETTINGS menu
2. Select LATITUDE. Enter ship’s latitude to within the accuracy
of ±10°.
3. Select LONGITUDE. Enter ship’s longitude to within the accu-
racy of ±10°.
4. Select ANTENNA HEIGHT and then enter antenna height above
the waterline. To enter 15 meters, for example, press [0], [1] and
[5].
5. If you know a satellite which is in line-of-sight, enter its number
in the CST SATELLITE NO. field. This will reduce the time re-
quired to complete the cold start.
6. Select YES from the COLD START field.
7. Press the [ENT] key.