STT Group SMD-300 User manual

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SM MD D- -3 30 00 0
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Se el le ec ct ti iv ve e P Pu ul ls se e
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Me et ta al l- -D De et te ec ct to or r
USER’s MANUAL
2011 

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
2
CONTENTS
Preface
3
Warning
3
Description
5
Complete set
6
SMD-300 main technical parameters
8
Principal of operation
12
SMD-300 design
13
Main unit –front panel
15
Main unit –bottom plate
16
Control unit with indication panel
17
SMD-300 controls
18
Main menu - operation modes and indication
19
„TEST‟ mode
21
„COMPENSATION EMI‟ mode
21
„METAL SEARCHING‟ mode
22
Detected item graphic display
25
Operational mode menu
34
Team-work with PC
39
Getting started
41
Unpacking and setting up
41
SMD-300 power supply
43
Performance check
46
Operating SMD-300 metal detector
49

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
3
Investigation of uniform matter without metallic
inserts
49
Investigation of Uniform matter with regular metallic
inserts
51
Investigation of uniform matter with typical discrete
metallic items or regularities
53
Appendix I SMD-300 battery charge
56
Shipping and storage
62
Certificate of acceptance
62
Warranty
62
For notes
58
PREFACE
This User’s Manual describes
SMD-300 Selective Pulse Metal-Detector
design and principle of operation
It should be read carefully
to ensure correct use and maintenance
of the instrument.
WARNINGS
SMD-300 Metal-Detector
represents
a functionally complete device
–thus needs no maintenance
from the User.
Don't try to disassemble it.
Ask qualified personnel
for service and repair.

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
4
Remarks from experienced user:
Selective Metal Detector SMD-300 described below
represents a smart reconnaissance instrument for revealing
concealed eavesdropping devices and other covered
installations in a difficult environment.
Certainly, one can use it for searching riches on a beach;
however its main purpose is a scrupulous investigation of
questioned items and surfaces after first superficial
inspection with non-linear junction detector.
Unlike its competitor SMD-300 supplies operator with
sufficient info about inspected object. By means of
comprehensive software Detector displays the data in a handy
form suitable for comparison and analysis. For instance,
‘unidentified metal object’ concealed under the plaster or
inside a concrete block is represented as a certain virtual
metallic plate with define size, width and occurrence depth.
At that, such an investigation is available when the object is
masked by regular matter with metallic inserts like grid and
reinforcement. Sometimes SMD-300 detector allows to get rid
of frequent X-ray inspection.
Nevertheless, please, note: SMD-300 is a complicated ‘second
echelon’ device for supplementary suspicious object
investigation. Its successful use is possible only after careful
study and adequate training.
Don’t forget saying: ‘Practice makes perfect…’

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
5
DESCRIPTION
SMD-300 Selective
Pulse Metal-Detector
(here and after SMD-
300 Detector) is
intended for searching
metallic irregularities
in a uniform substance
that consists of regular
metal insertions such
as metal reinforced structures.
SMD-300 can detect metallic items in homogeneous material
with regular metallic parts (screws, bolts, holders, wall outlets
and switches and etc.). The only condition is 20% alteration of
electromagnetic parameters caused by the object to be revealed
(its equivalent dimensions or occurrence depth). Even singular
parameter alteration is sufficient for the right item detection.
SMD-300 Detector can reveals such irregularities as thin-
walled metallic housing of electronic appliances concealed in
fabric constructions with regular reinforcement (walls, sealing
and a floor of a premise).
Fig. 1

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
6
SMD-300 Detector allows operator to estimate dimensions and
a form of a questioned item as well as its thickness and
occurrence depth.
COMPLETE SET (see fig. 2)
1
Main Unit (transceiver module)
1 pc
2
Control unit
1 pc
3
Sensor unit with handle
1 pc
4
Headphones
1 pc
5
Imitator (test unit)
1 pc
6
Rechargeable battery
2 pcs
7
Charger
1 pc
8
AC Adapter
1 pc
9
Computer connection cable
1 pc
10
Car Adapter
1 pc
11
3.5" Floppy disk with SMD software
1 pc
12
Carrying case (not shown)
1 pc
13
User manual
1 pc

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
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1
2
3
6
7
9
10
11
13
4
5
8
Fig. 2 Complete set

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
8
SMD-300 MAIN TECHNICAL PARAMETERS
Probe-signal-transmitting modes
(intensity of emitted magnetic field) –Pmax & Pmin.
Magnetic field strength at the Sensor unit geometric center:
–50 A/m in a Рmax- mode;
–25 A/m in a Рmin - mode.
Probe signal repetition rate –1 kHz.
Receiver sensitivity –not worse 10V
(500 kHz band under 10 dB s/n ratio)
Fig. 3 SMD-300 Detector set in a carrying case
1
2
3
7
8
6
4
5
9
10
11

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
9
Receiver dynamic range not less 100 dB
(AGC is “ON”)
Signal analysis period (at a single spatial point) –0.2 s
Indication –Audio (headphones) & Visual (LCD)
DETECTION RANGE and the range of a searching object
parameters evaluation: virtual shape, dimensions and depth
of burial in a uniform medium (see Table 1)
Table 1.
Metallic item
Detection range, cm
Detection
Shape
evaluation
Pmax
Pmin
Pmax
Pmin
Imitator
(test unit)
16
14
9
8
45×25×15 mm
metallic housing
20
18
15
13
Thin-wall metallic housing detection range - not less 6 cm
(9V battery equivalent)
NOTE - detection conditions: thin-wall metallic housing
beyond an obstacle –Al-plate (3 cm wide, 1,5 mm thick)
placed 3 cm far from the Detector‟s Sensor unit (see fig.4).

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
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OPERATION CONDITIONS:
- Operating temperature + 5°С …+ 40°С
- High and low temperature limits -20°С and +50°С
- Relative humidity(under +25°С)–not more 80%.
POWER SUPPLY –GP ‘VD-153’
6 V rechargeable battery
Current consumption in Рmax mode –not more 0.7 А
in Рmin mode - less then 0,4 А
Continuous operation time in Рmax mode -not less 3 h
from one fully in Рmin mode -not less 6 h
charged battery
Sensor unit
3 cm
6 cm
1.5 mm
3 cm
Questioned
item
Metallic obstacle
Al-plate
Fig. 4 Detection
condition

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
11
DIMENSIONS:
–Main unit (transceiver) –180×135×65 mm;
–Sensor unit –260 mm;
–Control unit with indication panel –260×100×30 mm;
–Standard carrying case –550×450×170 mm.
WEIGHT in run-position - not more 3.0 кг.
TOTAL WEIGHT -not more 6,5 kg.
in standard carrying case

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
12
PRINCIPLE OF OPERATION
SMD-300 principle of operation is based on eddy current
pulses analysis.
That current, known as Foucault currents, are originated in
metallic items from the outside pulse magnetic field.
Pulse magnetic field is formed by two transmitting coils housed
in a round Sensor body. Foucault currents are arisen in a part of
the metallic body that is closer to the sensor and is under the
influence of the coils.
Foucault currents magnetic field is captured by receiving coil
of the sensor and processed by build-in P.
Dedicated algorithm is used for this purpose.
The analysis results are displayed on a built-in LCD in a digital
or graphic mode on operator‟s preference.
Corresponding audio signal can be heard in the headphones as
well. The tone and loudness of it are adequate to the signal
level received.
SDM-300 operation is available by means of Control unit with
indication panel. All operational modes and the data obtained
are displayed on a build-in LCD.

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
13
SMD-300 DESIGN
SMD-300 Detector represents a portable set that in operational
status consists of (see fig. 5):
1- Main unit –transceiver module,
2- Sensor with a handle,
3- Control unit with indication panel and connecting cable,
4- Headphones.
Fig… Main unit, front panel
(turned around image)
3
4
1
2

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
14
Fig. 7 SMD-300 Detector Set
Clamp
Belt
Fig. 6
Right
hand
Left
hand
In operation mode
Sensor and Control
unit with an
indication panel are
in an operator‟s
hands while the
Main unit is fixed on
operator‟s belt by
means of easy to
use clamp(fig. 6-7 ).

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
15
MAIN UNIT - FRONT PANEL
2
3
1
6
4
5
Fig. 8-9 Main unit, front panel
1
3
2
4
5
Main unit, front panel, turn-over image

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
16
Main unit, front plate connectors (fig. 8-9 )
1 - 8-pin socket ‘INPUT’ for connecting Sensor unit;
2 - 5-pin socket ‘DISPLAY’ for coupling Control unit;
3 - ‘3.5 PHONE’ socket for headphones connection;
4 - Terminal plate for rechargeable battery connection;
5 - Battery lock;
6 - Clamp.
MAIN UNIT –BOTTOM PLATE
Socket for PC connection is on the bottom plate (see fig. 10).
Fig. 10 Main unit, bottom plate, PC connection socket
to PC
via connection
cable (9) on fig. 2

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
17
1
3
2
4
5
Fig. 11
CONTROL UNIT WITH INDICATION PANEL
Control unit (1) with indication panel (2) has LCD window (3)
and all essential controls (4) with non-fastened buttons (fig.
11). It has user‟s friendly design with handy shaft (5).

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
18
SMD-300 CONTROLS
1- ‘POWER’ON/OFF switch button;
2- ‘AXIS’button for parameters scale adjustment on a
built-in graphic display;
3- ‘DATA’button for data transfer to PC coupled to
the Detector;
4- ◄ & ► cursor buttons;
5- ‘ENTER’button for selected mode activation;
6- Graphic display.
Fig.12
1
3
2
5
6
4

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
19
MAIN MENU
OPERATIONAL MODES
AND INDICATION
After switching on
the device
the inscription
‘SELECTIVE METALL
DETECTOR SMD-300’
appears
on a screen (fig. 13)
3-5 sec later
the Main menu
will be displayed
with „1‟ blinking
symbol.
Fig. 13-14

SMD-300 Selective Pulse Metal-Detector User Manual
STT Group - Special Technique & Equipment Moscow Russia
20
SMD-300 MAIN MENU CONSISTS OF 3 PARTS
–3 OPERATIONAL MODES (fig. 14)
#1. METAL SEARCHING.
It‟s a primary operational mode: metal item detection and its
basic parameters evaluation.
#2. COMPENSATION EMI
corresponds to an automatic noise compensation mode.
NOTE: Noise compensation should be carried out every time
after switching on the device or switching over transmitter’s
output power (Pmax Pmin.).
In this case the following interferences can be compensated:
- Outside magnetic field in uniform (homogeneous) structures
without secondary metallic insertions;
- Eddy current magnetic field caused by metallic reinforcement
in uniform structures.
#3. TEST –automatic efficiency control mode.
Use ► or ◄ buttons to select an adequate operational mode
and press ‘ENTER’button to activate it.