User's Manual

mn100 Digital Display
34
6.2.10 No NMEA data showing on external instruments.
From any Digital instrument enter Setup and Calibration Mode (page
16) and scroll through to the Health Chapter. Check the signal level
and battery status of the NMEA Interface. If the signal level shows a
value of greater than 3 then check the data connections and the
settings of the NMEA source equipment to ensure that NMEA 0183 is
being transmitted correctly.
6.2.11 The Depth Alarm does not sound.
If the actual water depth is shallow and the alarm has not sounded it
is most likely that the alarm is switched off. From any Digital
instrument enter Setup and Calibration mode (page 16) and scroll
through to the Depth Chapter. Ensure the Depth Alarm settings are
correct.
* The “Master Instrument” is the instrument which was used to power
up the entire system. This instrument may be different each time
the system is used. If you are fault finding and are uncertain which
instrument is the master the switch off the system and switch on
again. The instrument which you switched on is now the master
Introduction
3
and
Battery is charged and being
topped up by the sun. *
Bright Sunny
Day
and
Battery is low and being charged
by the sun.
and
Battery is charged and requires no
further charging.
Overcast Day
and
Battery is low but maintaining it’s
level.
and
Battery is charged but is not
charging.
Night
and
Battery is low with no charging.
LOW Power
and
Flashing
It is recommended that the
instrument be left in daylight for
some time for the battery to
recover, or charge from an
external 9 - 24V power source. A
fully discharged battery will re-
charge in approximately 12 hours
of direct bright sunlight.
If using the instruments at night power usage can be reduced
dramatically by switching the Backlighting to level 1 or Off. If
Backlighting is not required on instruments located below decks it is
best to set them to “Local” Backlighting control (see page 22 -s31)
so that power is not being wasted in instruments which may not be
visible from the one being viewed.
* If the internal battery is fully charged then it does not
matter how much the instrument is subjected to bright sunlight no
further charging is required and the Charge Rate Indicator will
remain low.
If the instruments are to be stored for a long period of time
before next use (Over Winter) ensure that the batteries are
fully charged before storage. If necessary connect to a 9 to
24v power supply for 24 hrs prior to storage.