O R E N Z
P U L S E 5
26
Position 1 is an all metal mode which offers the
highest sensitivity for every kind of metal and all
object sizes. Position 1 and DISC are the same in
sensitivity. In position 1 however no target classification
is possible although the blue discriminator light will
turn on with any detected object.
Position 2
The LORENZ PULSE 5 offers in this position less
sensitivity than in position disc or position 1. Very
small pieces of foil or very small coins will be indicated
less sensitive and some very small objects can even
be eliminated. At the same time mineralized grounds
will be indicated less sensitive.
Iron, copper or silver objects will suffer from a small
loss in sensitivity especially when they are bigger
than a coin. This position is particularly useful when
searching for bigger objects while ignoring difficult
ground conditions or smaller pieces of metal. When
the universal cable coil has got more than three
windings the mode switch must be turned to position
2 or 3 to ensure best results.
Position 3
This position offers less sensitivity than position 2.
Many coins and some very small iron pieces will be
eliminated. Big objects will be indicated with a de-
creased sensitivity. The detector will work extremely
stayable on every ground in this position. This is
particularly useful while searching for large objects
made of copper, bronze or silver at medium depth
on badly mineralized ground or at very trashy areas.
Very strong signals can be located more precisely in
position 2 or 3 than in position 1 or disc.
Note:
It is not possible to turn on the LORENZ PULSE
5 without having connected a search-coil to the
electronics controlbox.
AUDIO-threshold control
With the audio-control the tick-rate of the audio can
be changed. The zero-push-button can be hold simul-
taneously while turning the audio-control. The initial
tick-rate can be altered from silent to a low frequency
ticking tone. For most applications this control can be
left in mid-position. In this position the built-in
loudspeaker will give one tick every 1-2 seconds, after
the detector has been retuned with the zero-control.
Note:
The audio-threshold control also acts as a
sensitivity control. When it is set to the left the detector
will respond up to 60% less sensitive than at the mid-
position. The detectors sensitivity may also be
increased when using a higher threshold-setting than
the mid-position.
ZERO-pushbutton
The zero-pushbutton is the most important control
as the whole electronics, including the discriminator
and the audio will be retuned when pressing this
control for about 1-3 seconds. During that time no
metal should be in the direct field of the searchcoil.
While turning the detector on, the zero-pushbutton
should be pressed down for at least three seconds
first. During that time the needle of the meter should
be at 0 and the previously tuned tick-rate should be
audible, or silent when the audio control was turned
to the left. With this control the present audio tick-
rate can always be recalled during operation while
pressing it for one second. When changing the se-
archcoil or when switching the mode-switch to diffe-
rent positions the zero-pushbutton has to be pushed
down for about 2-3 seconds to retune the electronics.
FREQ. - frequency control
With this control the preset operation frequency of
the LORENZ PULSE 5 can be altered. This is mainly
necessary when searching near powerlines, which
cause low frequency interferences. The performance
of the detector won’t be affected by changing the
position of this control, but the amount of inter-
ferences can be greatly reduced by doing this.
Meter with discriminator and battery-lights
The meter has got three different functions which
can be selected with the mode-switch.
1. Battery condition
The battery condition will be displayed on the meter
when turning the mode-switch to the batt.-position.
(100 = full, 70 = 1/2 full, 0-20 = battery discharged)
Note:
The battery condition can only be checked
with a searchcoil connected.
2. Discriminator / conductivity meter reading
The conductivity of a detected metal object will be
displayed on the meter with a specific number
(0=coin or nugget, 10-20 can, 30-60 iron, 60-100
copper or silver), when the disc-position is selected
with the mode switch.
3. Intensity / signal strength
The signal strength will be displayed on the meter
when turning the mode switch to position 1, 2 or 3.
The signal strength will be indicated by the way of a
meter indication and an audio response from the
speaker or headphones.
