Memorex RX 1 Smart Installationshandbuch PDF herunterladen (Seite 22)

20 | Keypad & Display Description

The Function Keys:

The MX51x has 17 function keys. These keys are used to directly access various

navigation, positioning, GPS, configuration and other screens. One function key is

used to mark your present position, and to activate the Man-Over-Board feature when

depressed for a few seconds.

The ten function keys with alphanumeric designations are described in the following

chapters. The MARK/MOB keys and the GOTO keys are described below.

The function keys are also used in the edit mode to enter alphanumeric information for

route and waypoint names.

Programmable Keys (F1 to F4)

These keys are like the memory buttons in car radios. They can be programmed to

quickly bring-up a particular screen that you use all the time. To memorize a particular

screen, all you need to do is first select the desired display using the regular function

keys, then press and hold the F1 (or another F# key) for about 3 seconds until a series

of short beeps is sounded. The function key is now programmed. The next time you

wish to bring up that particular screen, just press the F# key momentarily. You may

reprogram any F# key at will.

Mark / MOB Key

This dual function key when pressed momentarily marks your present position and

stores it at the next available waypoint location in the waypoint bank. A window pops up

on the screen to confirm your key depression, and to tell you where the mark position

is being stored. You can go into the WPT menu and edit the coordinates or description

later. The CDU is also capable of performing this function from a remote contact closure

input via the AUX Cable (MOB/Event) wire. Refer to section 5 - Installation section of this

manual for interface instructions.

When depressed for 3 seconds, this function key activates a number of automatic MOB

functions:

Most obviously, it brings up an

- MOB1 plot screen. This is an automatic scaling

screen which selects the best zoom level to display your present position and the

MOB position. In addition, the MOB position is displayed in the upper left corner, so

that you can quickly read the coordinates to others who may be available to render

assistance. This plot screen also provides the range and bearing back to the MOB

position, as well as your present course over ground.

The MOB position, date and time are stored in the Waypoint Bank for future

reference (e.g. log book entries).

Navigation data output on the NMEA ports (i.e. BWC and BWR), are changed to

reflect the current urgent situation. This way, other interfaced equipment can also

help guide you back to the MOB position. When the MOB condition is canceled via

a MOB screen softkey, the NMEA sentences will automatically revert to the active

route information. Don’t forget to cancel the MOB so your interfaced equipment

will read the correct data!

The MOB function key and remote MOB input are disabled from subsequent

activation, until the MOB Cancel softkey is selected.

Other functions such as Position and Navigate can still be accessed; however, the

screen will revert to the MOB Plot screen after 30 seconds. Bearing and distance

information in these other screens relate to the MOB position, not the next

waypoint in the active route, until MOB is canceled.

To cancel a MOB condition, make sure you are in the MOB Plot screen. Press the EDIT

function key, then press the ENT key to select the Cancel MOB softkey.

The MX51x CDU is also capable of performing the MOB function from a remote switch. If

the switch is pressed for less than 2 seconds, the action is registered as a Mark Position.

If the switch is pressed for 3 seconds, the MOB function is activated. Refer to the

Installation section of this manual for interface instructions.

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