Chapter 6 MDC-1840BB/1841BB/1860BB/1810BB/1820BB Series
Using The Menu
Operation Manual
6-6
93142122-07
MMSI
Ship's
ID
CPA
Closest Point of Approach
TCPA
Time to CPA
CSE/COG
Course/Course Over Ground
STW/SOG
Speed Through Water/Speed Over Ground
RNG
Range
T BRG
True
Bearing
6.2 DISP Menu
The DISP menu has three sub menus; MARK, ECHO, and NAV. Each menu has the
following sub menus.
6.2.1 MARK
The MARK menu has various markers such as VRM (Variable Range Marker), EBL
(Electronic Bearing Line), Stern Marker and Cursor L/L (Position Cursor) that can be
turned on or off. This menu also has the bearing mode control that affects the bearing
indication of the EBL and vectors.
6.2.1.1 VRMs and EBLs
VRM 1 and 2, EBL 1 and 2, and PI (Parallel Index Line) can be set with the menu.
1st VRM
Variable Range Marker No.1
OFF, ON
2nd VRM
Variable Range Marker No.2
OFF, ON
1st EBL
Electronic Bearing Line No.1
OFF, ON
2nd EBL
Electronic Bearing Line No.2
OFF, ON
PI
Parallel Index Line Cursor
OFF, ON
To change the bearing and interval of the parallel index line, use the following
procedure:
1) Set the screen to normal display mode.
2) Keep pressing the EBL SEL key until the wedge symbol points to the letters PI,
shown in the left bottom of the screen. In the same manner, press the VRM SEL
key until the wedge symbol points to the letters PI in the right bottom of the screen.
3) Rotate the EBL control to move the PI in azimuth and the VRM control to change
the interval of the index lines.
NOTE:
The underlined items are default values.
