DX-300 – DIVER HELD MAGNETOMETER
User Manual
6
N.B. THE CURRENT TYPE OF CHARGERS SUPPLIED (JAN 2011
ONWARDS) PROVIDE A CONSTANT RATE OF CHARGE FOR UP TO 14
HOURS; FOLLOWED BY A TRICKLE CHARGE (MAINTENANCE)
MODE. WHILST CHARGING AT THE REGULAR RATE THE LED
LIGHT WILL GLOW ORANGE, ONCE THE CHARGING PERIOD BEEN
COMPLETED THE CHARGER DROPS INTO “TOP UP” CHARGE
MODE, AT THIS STAGE THE LIGHT CHANGES TO GREEN WITH A
YELLOW FLASH.
During subsequent partial recharge/top up requirements; batteries will not be
damaged by being left on charge for a longer period than necessary, this is due
to the controlled charge current being automatically followed by a trickle charge
mode. If the batteries become fully discharged - due to natural extended usage
or through the unit accidentally being left in the on state – the unit should be
fully recharged as soon as possible to avoid irreparable damage to the battery
cells.
N.B. DO NOT USE ANY BATTERY CHARGER OTHER THAN THAT
SUPPLIED; AS THIS COULD RESULT IN DAMAGE TO THE BATTERY
PACK.
When the charge period has elapsed, disconnect the AC supply to the charger
first
, and then unplug the connector from the socket on the detector. Charging
can be terminated before the 14 hour period has elapsed if the unit just requires a
top up charge. NB. The operational usage time on a full charge with a healthy
battery pack will be in the order of 24 hours, recharging will require a 1 hour
charge time for each 2 hours of usage; in other words a 2:1 usage/charge time to
replenish. Some earlier types of charger had a 6 hour time out period requiring
the charger to be switched off and back on to extend the charging to periods
exceeding the 6 hour cut off.
2. For initial testing on land, you will have to find a location where you can position
yourself at least 20 metres from any large ferrous objects in all directions. Get rid
of anything containing ferrous/magnetic items on your body or in your clothing –
and leave your mobile/cell phone well out of range. An empty farm field, park,
sports field or beach is ideal for testing. If possible park your car at the edge of
the field (at least 20 metres from where you will be testing), or find a location
where there is some large ferrous target in one direction only.
3. To prepare the DX-300 for use, plug the connector on the Sensor Probe into the
SENSOR socket and screw down the retaining collar. This should be good finger
tightness only.
N.B.PLIERS OR OTHER TOOLS SHOULD NOT BE USED TO TIGHTEN THE
PLUG COLLARS. THESE ARE DESIGNED TO BE USED FINGER TIGHT
WITH THE BLACK RUBBER BULKHEAD SEAL IN PLACE ON THE
PLUG PINS. OVER-TIGHTENING, OR INSTALLING THE PLUG
