13
adjustment of the GROUND control in NON MOTION mode (see page 15 for
further details). Once correctly set this control can be returned to METER DISC
(a).
c. BATTERY
In this position, the meter indicates the state of charge of the batteries. When the
needle is in the green area, the batteries are in a good usable condition. If the
needle is in the centre or to the left of centre, the batteries are exhausted. It must
be stressed that when the charge falls to a totally unusable level then the needle
will settle in the centre of the scale. Use this indication in conjunction with the
audio signal from the speaker. If the needle is in the centre or to the left of centre
and there is no sound emitted, then the batteries are exhausted. The switch must
be held in this position to obtain a reading and it will return to the central position
when released.
C. Controls Used In Motion Mode.
The controls for use in the motion mode are as follows:
i.
DISC (J in diagram 7).
This is a rotary control allowing the user to set the response to certain targets. At the
fully anticlockwise end of the control there is a switched position. In this position the
detector will respond to ALL METAL. When only just moved from the switched
position, small iron targets will be discriminated against. As the control is moved
clockwise, more and more targets will be discriminated against (i.e. ignored on the audio
output). The order of discrimination is typically: iron, silver paper, 5p, ring pull, 20p,
10p, screw bottle cap.
ii.
NOTCH (M in diagram 7).
This rotary control allows the position of the 'Notch Window' to be set. The fully
anticlockwise position of the control is a switch (NOTCH OFF) and in this position the
NOTCH facility is disabled. As the control is moved clockwise, targets fall into the
window in the same order as that described in the DISC control above.
iii.
NOTCH (Mode Select Switch) (N in diagram 7).
This control is a two position switch located on the front panel in the left hand position
and is labelled ACCEPT/REJECT. The switch only has an effect while the NOTCH
control is switched on. When set to the REJECT position, targets within the window are
ignored or REJECTED. When set to the ACCEPT position only targets within the
window will produce a response from the loudspeaker.
General note:
When operating the detector in motion mode, the meter displays responses
from the meter discriminating channel of the detector. This is independent of
the position of the switch. Thus meter movements will be as described in section
B.iii.a.
Summary of Contents for CS4ZX
Page 1: ...1 OPERATING INSTRUCTIONS...
