ST131.S

A multifunctional detection device ST131.S is intended for detecting and localization of special technical means (STM) for surreptitious information gathering.

The main types of the STM, for detection of which ST131.S is intended, are:

The STM with information transfer by radio channel.

The STM uses the following lines for information transfer: AC power, telephone, coaxial, security and fire alarm cords.
The STM with information transfer in the infrared frequency range and ultrasonic frequency range.
Differences from he previous devices:

The frequency range of the first channel "Radio" extended to 6 GHz
The UHF converter is located in the main unit.
The bias voltage supply module is located in the wire line adapter.
Powered by Li pol type 16650 batteries.
Keyboard backlight

Construction of ST131.S envisages two basic modes of operation:

Portable, using the capabilities of the main unit and attachments
Stationary, using the original software "ST131Analyzer.pro".

Components

Main unit

Is the basic element of the devices

Software

Oscilloscope, spectral and vector analysis, “waterfall”;
Creation of signals database;
MONITORING with expanded presets;
Stream recording of signals to HDD of PC;
Special detection algorithms.
PC transfer of data, that has been stored in the ST131.S main unit.

Wire lines adapter «ST131.S.AWL»

ST131.S.AWL is a monoblock in which structurally united:

Step-down transformer voltage converter assigned to operate in the frequency range from 0.01 to 30 MHz;
Low frequency differential amplifier assigned for operation in the acoustic frequency range (0.3 - 15 KHz).
Switching device controlled directly from the main unit and provides connection to the contact pairs of the RJ-45. Connection can be to the most common combinations of pairs as well as user-defined pair.
Generator of nonlinear junction detector
Offset voltage supply circuit designed to supply bias voltage (power supply) to the wire line in order to activate the special technical means connected to this line for secretly obtaining information

RF wire line adapter «ST131.S.RAWL».

ST131.S.RAWL is a single monoblock with integrated circuit protection against high voltage up to 250V.

UHF antenna "ST131.S.UHF.A"

ST131.S.UHF.A is a passive broadband antenna.

Testing device "ST131.S.TEST"

The "ST131.S.TEST" is intended to control operability of device ST131.S by testing all detection channels in the main unit as well as rest equipment (sensors, antennas, adapters, converters).

The "ST131.S.TEST" has six control signal sources corresponding to the ST131.S detection channels as well as non-linear element to check the non-linear junction detector.

1.3.7 Magnetic field sensor ST131.S.MF. ST131.S.MF consists of a ferrite antenna and pre-amplifier. ST131.S.MF operates in two modes:
«MAGNETOMETER"- directly as a magnetic field intensity sensor
"GRADIOMETER" - In this mode an influence of remote strong sources of magnetic field is reduced significantly as well as influence of other disturbing impacts (acoustic, vibro-acoustic, etc).

SHF antenna-detector "ST131.S.SHF"

ST131.S.SHF consists of the structurally integrated log-periodic antenna and SHF detector-amplifier.

Infrared sensor "ST131.S.IR"

This sensor structurally consists of receiving photodiode and pre-amplifier. The front side of sensor has the screw-thread hole 1/4" used for connection of the special monopod or tripod.

Acoustic sensor "ST131.S.A"
Designed to receive acoustic signals in the sound and ultrasonic frequency range.
Microphone and amplifier are structurally combined in this sensor

DETECTING CHANNELS

CHANNEL"RADIO"

This channel provides the reception and the subsequent processing of radio signals in the frequency range 0.01 - 18000 MHz.

WIRE LINE CHANNEL
This channel provides the reception and the subsequent processing of the signals which are transmitted by wires for different purposes (power, telephone, coaxial, computer networks, security and fire alarm systems, etc.

OPTICAL CHANNEL

Receiving and processing of the emission in the optical frequency range is provided in this channel.

ACOUSTIC-ELECTRIC CHANNEL

Receiving, amplifying and analyzing of signals within the frequency range of 10 Hz – 125 kHz is provided in this channel.
For the detection of side electromagnetic emission generated by devices such as digital voice recorder, cell phone, smart phone, etc. intended a magnetic field sensor "ST131.MF".

Work in entire frequency range

Detailed analysis of the signals in the selected band

Decrease of the swath increases signal/noise ratio in
inverse proportion to the band in addition to increase horizontal resolution

Аudio control of the demodulated signal.

Multi-segment scale level of signal

Automatic detection of signals exseeds predetermined
threshold with creation of database

Instant and detailed patterns
Detailed pattern automaticaly adapted for any range

Analysis of signals in the frequency and time domain

Absolute and relative measurements using cursor lines

Creating a list of signals in automatic and manual mode

Transfer data to PC

Special indicator levels of signals cellurar and wireless
data transmission

Level meter of signal of base station

Automatic and manual analysis of pairs of ETHERNET cable

NON-LINEAR JUNCTION DETECTOR OPTION (only for ST131N)

FIRMWARE UPDATE

Updates take place automatically when you select the
latest version of the software at manufacturer's website
and start the upgrade.

MAIN UNIT
DIGITAL SIGNAL PROCESSING MODULE
Simultaneous processing frequency range, MHz	0.01-30
Resolution of ADC, bits	10, 14 and 16
Number of FFT points	32768 (with PC software) 512 (the ST131 main unit)
DDC filter bandwidth, MHz	0.0005-10 MHz
Demodulators	АМ, FM, SSB
Detectors	RMS, average, peak-hold, quasi-peak
“CH1” input
Frequency range, KHz	0.01-125
Displayed noise level - FULL RANGE, dBm	- Minus 110 (minus 140 for PC software)
“CH2” input
Frequency range, MHz	0.01-30
Displayed noise level - FULL RANGE, dBm - 1 KHz bandwidth, dBm	- Minus 110 (minus 130 for PC software) - Minus 150
“CH3” input
Frequency range, MHz	30-6000
Displayed noise level dBm - FULL RANGE, dBm - 1 KHz bandwidth, dBm	- Minus 90 (minus 100 for PC software) - Minus 110
Analysis speed, not less, GHz/sec	10
Input attenuation value, dB	0 - 30 with step 5
Frequency of test signal NON-LINEAR JUNCTION DETECTOR, KHz	150-220
Indication	3.5’’, 240x320, 262144 colors
Interface	USB 2.0
Supply current, A	0.4-0.6
Power supply	4 type 16650 batteries
Dimensions, mm	190x97x50
ST131.S.AWL
Frequency range 1, KHz	0.3-15
Displayed noise range, not worse, dBm	Minus 115 (minus 140 for PC software)
Input signal maximum level, dBm	20
Input amplifier gain, dB	14, 26, 38, 44, 50, AGC
Common mode rejection ratio (CMRR), not less, dB	60
Maximum allowed input voltage, V	250
Frequency range 2, MHz	0.01 - 30
Displayed noise level - FULL RANGE, dBm - 1 KHz bandwidth, dBm	- Minus 90 (minus 120 for PC software) - Minus 125
Input signal maximum level, dBm	10
Maximum allowed input voltage, V	250
Values of bandwidth, MHz	10, 5, 2, 1, 0.5. 0.2, 0.1, 0.05, 0.02, 0.01, 0.005, 0.002, 0.001, 0.0005
Input amplifier gain, dB	Plus 5, minus 1, 7, 13, 19, 25, 31, 37, AGC
Power supply of offset voltage	MN21x2 12V battery
Offset voltage setting range, V	+/- 0.3-23V
Frequency of test signal non-linear junction detector, kHz	150-220
Dimensions (without cable), mm	113X62X29
Length of cable, m	0.2
ST131.S.RAWL
Frequency range, MHz	30 - 4000
Insertion loss, dB	1(500MHz), 5(4000MHz)
Maximum allowed input voltage, V	250
Dimension, mm	L=64, D=22
ST131.S.MF
Frequency range (for passband ripple 4dB), Hz	30-30000
Threshold sensitivity, at 1000 Hz, not worse, A/m*Hz1/2	2*10-6
Dimension, (without cable), mm
ST131.S.SHF
Frequency range, MHz	6000 - 18000
Directional pattern width, degree	60-90
Dimensions (without cable), mm	235X45X22
ST131.S.IR
Frequency range, nanometers	220-3200
Measuring range (1MHz), dB	-40/+10
Subcarrier frequency range, MHz	0.01-5
Spectral range, nm	770 – 1600 (550-1100)
Field of view, degree	10
Dimension, (without cable), mm	L=55, D=26

Basic set
1 Main unit
2 Power supply
3 Main unit’s supporting device
4 Main unit’s shoulder holder.
5 USB cable
6 Li-pol akk. type 16650 (4 pcs)
7 USB flash drive with software
8 Technical description and operating manual

Additional set
1 “ST131.S.AWL” – wire line adapter+”RJ-45” cable +220V clips (2 units)+ "GROUND" wire+ Probes set + alligator clips+ battery12V MN21(2ps.)
2 “ST131.S.SHF” - SHF antenna-detector
3 “ST131.S.IR” - infrared sensor
4 “ST131.S.TEST” - testing device
5 “ST131.S.MF” - Magnetic field sensor
6 “ST131.S.UHF.A” - broadband UHF antenna
7 Telescopic antenna
8 «ST131.RAWL» - RF wire line adapter+«F-BNC»
9 “ST131.S.A” Acoustic sensor
10 Tripod
11 Headphones

The "ST131.S.TEST" is intended to control operability of device ST131.S by testing all detection channels in the main unit as well as rest equipment (sensors, antennas, adapters, converters).
The "ST131.S.TEST" has six control signal sources corresponding to the ST131.S detection channels as well as non-linear element to check the non-linear junction detector.

Work in entire frequency range
Detailed analysis of the signals in the selected band Decrease of the swath increases signal/noise ratio in inverse proportion to the band in addition to increase horizontal resolution
Аudio control of the demodulated signal.
Multi-segment scale level of signal
Automatic detection of signals exseeds predetermined threshold with creation of database
Instant and detailed patterns Detailed pattern automaticaly adapted for any range
Analysis of signals in the frequency and time domain Absolute and relative measurements using cursor lines
Creating a list of signals in automatic and manual mode Transfer data to PC
Special indicator levels of signals cellurar and wireless data transmission Level meter of signal of base station
Automatic and manual analysis of pairs of ETHERNET cable
NON-LINEAR JUNCTION DETECTOR OPTION (only for ST131N)