Timed Transmission Option; Marks Options; Custom Scale - Raymarine RL70C Owner's Handbook Manual

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If you choose this mode, the selection you made for Bearing Mode
determines whether °M or °T is displayed in the EBL data boxes. The current
units are shown for the heading value in the status bar at the top of the screen.

Timed Transmission Option

The TIMED TRANSMIT parameter, together with the TX PERIOD and STANDBY
PERIOD parameters, controls the radar's timed transmission power-saving
mode.
When TIMED TRANSMIT is set to ON, the scanner performs the number of scans
specified by TX PERIOD and then shuts down for the number of minutes
specified by STANDBY PERIOD. While it is shut down, the scanner does not
rotate, and the display is in standby.
Set the TIMED TX parameter to OFF for normal operation. In this case, the TX
PERIOD and STANDBY PERIOD values are ignored.
Note: Timed Transmision is not available on a Repeater Display.

Marks Options

You can select the mark symbol that will be used when you place a mark (see
Section 4.4).
If you turn the MARK DISPLAY option OFF, any marks you have placed are hidden
on the display, but retained in the marks database. You can turn the option on
again to display them at any time.
To clear all stored marks from the marks database, press the CLEAR MARKS soft
key, and the YES soft key to confirm the deletion.

Custom Scale

You can set up your own range scale. When switched ON, this is used instead of
the Pathfinder Radar default range scale (see Section 3.2).
To set up a scale, press the SET RANGES soft key. The Custom Range Setup
Menu is displayed, which allows you to change the maximum range for each
range selection.
The following table lists the ranges, shows the factory default setting, and
provides a space for you to make a note of your new setting.
HSB Series LCD Display