9
20
DISCRIMINATION POINTS
9.
Large pieces of trash such as beer cans or jar lids may
sound like good targets no matter what you do. With
a little practice, however, you will be able to tell the
difference between a large target and a small coin
sized object.
10.
The diagram below shows some of the different
target responses you may expect at different levels
of discrimination. Note that as you increase the
discrimination level, you progressively eliminate more
targets including some good ones, such as nickels and
gold rings.
* At the maximum sensitivity level of 10, you may hear some static or “circuit
noise”. As a general rule, hold the searchcoil in the air and set the sensitivity
at 10. If the circuit noise is annoying, reduce the sensitivity to 8 or 9.
Figure 5. Typical 1280-X audio responses over 1 inch deep targets with
searchcoil sweeping 1 to 2 inches above ground.
BATTERY RECHARGING
Rechargeable nicad batteries may take as many as 1,000
recharges, however they do have some limitations you should
be aware of:
1.
Nicads will last only about half as long as standard
carbon-zinc batteries before recharging is required.
2.
Nicads may develop a “memory” if you give them
repeated “booster” charges. In other words, if you
charge your batteries over and over again for only
three hours at a time, the batteries will eventually only
hold a three-hour charge.
3.
Nicads may reverse polarity if discharged too far and
will not recharge. Don’t leave your detector on and
don’t continue to operate it more than an hour after
the battery check tone goes silent.
The optional 1280-X recharge kit includes (1) battery pack, (8)
nicad batteries, (1) 110v, 60 cycle home recharger and (1 ) 12v
negative-ground auto cigarette lighter recharger.
110-VOLT RECHARGER
1.
Remove and disconnect the nicad battery pack from
the 1280-X Control Housing.
2.
Connect the recharger battery lead to the battery
pack.
3.
Plug the recharger into a wall outlet and the batteries
will begin to recharge immediately.
4.
The small green light in the charger will stay on
during the entire charge cycling indicating that all
connections have been made and the charger is
working.
5.
A full charge will take approximately 24 hours. Do not
charge over 48 hours
12-VOLT AUTO RECHARGER
(Use only with 12v negative ground system.)
