Memorex RX 1 Smart Manual de Instalação descarregar pdf (Página 24)

Simrad MX500 | 23

Red/Yellow Solid

Dead Reckoning . When normal GPS or DGPS operation

is not available, this LED sequence is provided to quickly

identify the DR navigation mode. A DR indicator is also

displayed on all screens in the upper left hand corner of

the display.

Red Solid

Tracking one or more satellites (no position up-

date). This is also normal for the first 2 minutes or so

when turning the unit on. The very first time you turn the

unit on, allow the receiver to run for at least 20 minutes

after changing to Red Solid to collect an almanac from

the satellites, regardless of whether a position update

has been calculated or not. This is also a normal indi-

cation if the HDOP is greater than 10, if the receiver is

tracking too few satellites, or for other reasons as well.

Read the GPS and DGPS function screens for more infor-

mation.

Yellow Solid

GPS position update has a poor HDOP value. You

may see this from time to time during normal operation.

It usually occurs when you are tracking 3, 4, or 5 satel-

lites, and the satellites have poor geometry relative to

your position. If you are patient, the condition will nor-

mally go back to Green Solid when you pick up another

satellite or the geometry of the existing satellites im-

proves. The factory default level for this indication is with

an HDOP of 4 to 10. During this period, your positioning

information is less than optimal, and position accuracy

may be off by as much as 10 to 30 meters. You can press

the GPS function key and refer to the GPS section in this

manual for guidance if this light condition occurs.

Green Solid

GPS position update with HDOP value less than 4.

This is the normal operating condition. Position accuracy

is normally between 3 to 5 meters, but can be out as

much as 30 meters. Keep in mind that position accuracy

is always only as good as the geometry of the satellites

and the navigation information provided by the satellites.

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Memorex RX 1 Smart Manual de Instalação Página 24