C-SCOPE VLF 1000 Operating Instructions Manual page 2

INTRODUCTION
The C-Scope VLF 1000 is the most electronically advanced
detector available and is the result of six years continued
research and development by Britain's leading detector
manufacturer. It operates on a very low frequency and
incorporates a quartz crystal drive to ensure accurate
performance in both normal and discriminate modes. The
detector is designed to give the operator the greatest
flexibility possible. It will exclude ground effects
in its normal mode or alternatively be tuned to take
advantage of wide range discrimination facility which can
be varied from ignoring small pieces of iron to rejecting
pull-tabs.
The ground effect in the discrimination modes is minimal
on most sites but should it become intolerable the operator
can reduce the ground effect by reducing the sensitivity.
The C-Scope VLF 1000 is a professional model and is
manufactured to the highest standard to give you the
maximum performance. The machine has been designed
for easy operation, but there are several ways of using the
detector. In order to get the best out of your machine and
ensure correct operation it is important to spend some
time before going out with your detector studying these
instructions. This time will be well repaid in helping you
get the best results.
DIAGRAM OF THE CONTROLS AND THEIR
FUNCTIONS (see front cover photograph)
A) Volume on/off
Switches machine on and controls level of sound emitted
by the internal loudspeaker or, if plugged into the jacket
socket, the headphones.
B) Auto-Tune Button
Should be depressed when any control is operated and
when the detector requires re-tuning.
C) Tune
Controls the reading of the meter and functions in con­
Junction with the push button in the handle grip, which
must always be depressed whilst the tuning is adjusted.
The tuning is normally set for a meter reading of approx­
imately mid-scale so that the sound is just audible (This is
the setting for most sensitivity)
D) Function
The 'Function' switch essentially controls the degree of
discrimination of the machine and operates in conjunction
with the 'Ground' and 'Reject' controls as follows
E) 'Normal'
The machine operates as an
all
metal detector and discrim­
inates against ground mineralisation. The 'Ground' control
allows fine adjustment to enable the effects of the soil to
be completely eliminated.
F) Discrimination Modes (01, 02 and 03)
As the' Function' switch is rotated clockwise the detector
operates so as to discriminate more and more severely with
the 'Reject' enabling a fine adjustment of each position
(Note that the 'ground' control is not operative when the
machine is operated in the discriminate modes).
02
As 01 but also rejects silver paper from cigarette packets.
03
As 02 but also rejects pull-tabs and aluminium foil. This
setting should be used with great caution as certain coins
will be rejected on this range, i.e. modern 'silver' coins
made from a copper-nickel alloy.
G) Sensitivity
This control allows reduction of the sensitivitv of the
machine and is used mainly on the discriminate modes
on sites where there is excessive ground effect combined
with a lot of junk making the 'Normal' mode unuseable,
Turning the sensitivity control towards 'Nil' will also
reduce the depth penetration.
H) Battery Check
When the button is depressed the meter will indicate the
state of the batteries irrespective of the setti ngs of the panel
controls provided that the machine is switched on. Replace
batteries when needle falls below the red line.
ASSEMBLING YOUR C-SCOPE VLF 1000
When you receive your C-Scope VLF 1000, the detector
will have been broken down for shipment. To assemble,
simply insert the lower stem into the upper stem and
tighten the knurled locking collar. This knurled collar has
a plastic collar inside which causes the two sections of the
stem to lock at the required point.
Before testing, it is necessary to purchase two PP6 batteries.
To fit these turn fastener anticlockwise through 90
0
and pullout. Open-control box outwards, and slide the
batteries under the battery clip, and snap on connectors.
If you intend to operate the instrument with the head ­
phones, insert the headphone jackplug into the OUTPUT
SOCKET at the top of the control box, and the detector
is ready for operation.
HOW TO TUNE THE VLF 1000
1. DEPRESS AUTO-TUNE BUTTON
This is the button on the end of the handle. It should be
pressed while making any initial tuning or discrimination
adjustment. If, later on, the detector is thrown off tune by
something, correct tuning is restored by pressing the button.
No need to readjust the other controls
l
2. SELECT NORMAL MODE
Before switching on, set the controls as follows.
Ground to 5
Reject to 5
Sensitivity to Maximum
TunetoO.
3.
RAISE THE SEARCH HEAD WELL CLEAR OF
THE GROUND AND METAL OBJECTS
4. TURN THE VOLUME CONTROL FULLY CLOCK­
WISE
Th is also switches on the detector.
01
5. TURN THE TUNE CONTROL UNTIL SOUND IS
The machine will reject most small iron objects such as
nails, nuts, bolts, etc., but still detect all coins, silver paper
JUST HEARD FAINTLY IN THE SPEAKER (OR
HEAnPH~~ESIFPLUGGEDIN)
and pull-tabs, etc.
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