Furuno 1823C-BB Operator's Manual page 174

5. CUSTOMIZING YOUR UNIT
Item
EBL References EBL bearing, shown in the
Reference EBL data box, to North (True) or
heading (Relative). Relative with no
heading input. True only in course-up,
north-up and true motion.
Cursor Chooses how to display cursor position.
Position
Note: "RNG & BRG-TRUE" requires
heading data, true bearing. Reverts to
relative bearing when heading data is
lost.
Tuning Selects receiver tuning method. For
further details see the paragraph "2.6
Tuning."
TX Sector Turns on/off dead sector graphic, which
Blanking shows area where no echoes are
transmitted. To set sector, select ON,
then enter start bearing from the ship's
bow and sector. Max. sector is 135°.
Dashed lines mark the dead sector.
Note that noise may occasionally
appear in the TX sector when the echo
trail feature is turned on.
Noise Electrical noise, appearing on the
Rejection screen as "speckles," may be
suppressed with the noise rejector.
Note that some forms of interference
cannot be suppressed.
(Con't on next page)
5-4
Contents of radar display setup menu
Description
Dead sector
offered by Busse-Yachtshop.de
Settings
True, Relative
LAT/LON: Lat/Long position of cursor
TD: Loran C or Decca TDs
RNG & BRG-REL: Range and bearing
in relative bearing.
RNG & BRG-TRUE: Range and
bearing in true bearing.
Auto, Manual
On, Off
Off, Low, High