Memorex RX 1 Smart Instrukcja Instalacji Pobierz pdf (Strona 241)

240 | Simrad MX500

ELEVATION ANGLE

The angle made by the line-of-sight range to the satellite

and the horizontal plane of the navigator antenna. Thus,

the elevation angle is 90 degrees when the satellite

is overhead and 0 degrees when it first appears on the

horizon. Satellites whose maximum elevation angle is

less than 5 degrees are not good candidates for providing

an accurate position (latitude and longitude) update.

ELIPSOID

A spheroid whose north-south axis is shorter than the

east-west axis (oblate spheroid).

ENTER

To store data in the memory of the navigator.

EPHEMERIDES (Singular: EPHEMERIS)

Tabulations of accurate data describing celestial posi-

tion and health of the satellites over a 24-hour period.

The data is uploaded to the satellites every 12 hours.

ETA

Estimated Time of Arrival. Calculated on basis of the

distance to the destination and the current (or estimated)

speed.

FATDMA

Fixed Access Time Division Multiple Access – Data link

access protocol used by base station transponders to

allocate transmission slots on the data link. These slots

are fixed and will thus not change until the base station

transponder is re-configured.

FILTER TIME

If the GPS signals are distorted by Selective Availability

(S/A) the COG and SOG readings will be unstable, espe-

cially at low speeds. In order to smooth out the readings

you can adjust the COG/SOG filter time (CFG 1, COG

SOG)

FLUX GATE COMPASS

A magnetic compass sensor without needle or card,

whose two- or three-phase sinusoidal output is a head-

ing reference. Interfaced to the navigator via the NMEA

interface.

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Memorex RX 1 Smart Instrukcja Instalacji Strona 241