Key Beep; Mob Data; Menu Timeout Period; Units - Raymarine hsb2 Owner's Handbook Manual

Chapter 7: Setting Up the System Defaults

Key Beep

This option controls whether or not the keys make a noise when you press
them.

MOB Data

This option controls whether MOB data is based on position data, or on dead
reckoning (DR). Dead reckoning normally provides a better indication of the
course to an object in the water, on the assumption that your vessel and the
object are both subject to the same tide and wind effects.

Menu Timeout Period

With no timeout set, menus and soft key labels remain displayed until you
clear them by pressing ENTER, CLEAR or the appropriate dedicated key.
If you set a value here, the menus and soft key labels will be cleared if a key has
not been pressed for the specified number of seconds.
This setting does not affect the default soft key labels, which are controlled by
the Soft Keys option (see above).

Units

You can set the units for speed, depth and temperature. The units you set will
be used to display all data, including information received from other
instruments on the system. However, the distance units do not affect the
instrumented range of the radar, which is always in nautical miles.

Variation Source

The variation value is the difference between True and Magnetic direction
data for heading or bearing values. The Variation Source option provides soft
keys for selecting Auto or Manual variation mode, displays the current
variation value for each and highlights the currently selected mode.
Auto Mode (available in systems with HSB Radar)
If you select Auto mode, the radar obtains the value of variation automatically,
normally from received data. The variation value that is used depends on the
data available, and is selected in the following order of priority:
1. Variation value from the same source as the heading data:
• If heading data is being taken from NMEA, then variation is also taken
• If heading is taken from SeaTalk, then SeaTalk variation is used
from NMEA
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