MT-550
23
CONTRAST
Allows adjustment of LCD display contrast for best readability in varying lighting
conditions.
•
Press and hold the
CALL
key. Menu topics appear in the display.
•
Use the
SELECT/ENT
knob to position the cursor on the
CONTRAST
topic.
•
Press the
SELECT/ENT
knob. The
CONTRAST
adjust screen appears in the
display.
USA
INT
CONTRAST
LO HI
Contrast Control
•
Use the
SELECT/ENT
knob or microphone keys 0~7 to change the setting.
•
Press the
SELECT/ENT
knob or press and hold the
CALL
key to store the
setting and exit.
DATA SET
Provides On/Off control for display of Lat/Lon, Date/Time, Speed/Course, and
Manual Lat/Lon. Also, provides for entry of Manual Lat/Lon coordinates.
•
Press and hold the
CALL
key. Menu topics appear in the display.
•
Use the
SELECT/ENT
knob to position the cursor on the
DATA SET
topic.
•
Push the
SELECT/ENT
knob. The Data Set menu selections appear in the
display.
USA
INT
LLPOSITION
TIME/DATE
SOG/COG
MANUAL LL
Data Set Selections
•
Use the
SELECT/ENT
knob or
ENT
or
EXIT
to select either
LLPOSITION
,
TIME/DATE
or
SOG/COG
.
MANUAL LL
is described separately.
•
Push the
SELECT/ENT
knob. The On/Off option is displayed.
•
Use the
SELECT/ENT
knob or any microphone key to select either On or Off.
•
Push the
SELECT/ENT
knob to store the selection and exit to the previous
menu.
The
MANUAL LL
data item has 3 options, On/Off/Set. The Set option is used to
manually enter your approximate Lat/Lon position and time of day for distress
messages if your GPS is not connected or not functioning. If Manual Lat/Lon is
turned On, it overrides your GPS Lat/Lon position. Be sure Manual Lat/Lon and
time of day are correctly entered before turning the function On. Time of day is
entered as your local time in either 12 hour or 24 hour format. It is important that
your local time offset from Universal Coordinated Time (UTC) is set correctly. See
the
TIME SET
topic on the Main Menu.
