Memorex RX 1 Smart Installationshandbuch PDF herunterladen (Seite 118)

Simrad MX500 | 117

DGPS Mode:

Auto - sets the receiver to automatic DGPS or GPS

modes. This is the default setting. If DGPS corrections

are being received and their age is less than the Max Age

limit, the receiver will operate in DGPS mode (assum-

ing you are receiving corrections for enough satellites to

operate in DGPS mode). Otherwise, the receiver operates

in GPS positioning mode.

The traffic light will be green when it is in DGPS mode.

Then it drops to GPS mode, a DGPS symbol will be dis-

played (indicating Non Differential GPS mode), and the

yellow and green traffic light will be on.

Use this mode when maximum navigation coverage is

more important than accuracy. Reverting to GPS mode

will degrade the overall navigation results, but it is better

than no navigation results at all in most circumstances.

DGPS Only - sets the receiver to only provide DGPS posi-

tion fixes. If corrections are being received and their age

is less than the Max Age limit, the receiver will operate in

DGPS mode (assuming there are enough corrections to

operate in DGPS mode). Otherwise, the receiver will not

provide any position fix at all.

Use this mode when accuracy is more important than

maximum navigation coverage. When operating in this

mode, you should also set the Max Age to 30 seconds.

Off - sets the receiver to operate in GPS mode only.

Max Age -sets the maximum time limit that the last

received DGPS correction will be applied to the satellite

range measurement in the receiver. The default setting

is 60 seconds. The receiver will accept values from 10

to 999 seconds. Due to the removal of the S/A dithering

from the satellite signal, you may now use values of 300

seconds in the maximum age and still be very accurate.

Message 16 Alarm - sets the alarm to On or Off if a refer-

ence station text message is received. The default set-

ting is Yes. Received Type 16 messages can be displayed

on the GPS7 screen, regardless of the alarm setting.

Alarm For No Corrections - sets the alarm to on or off if

DGPS corrections are not received within the Max Age.

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Memorex RX 1 Smart Installationshandbuch Seite 118