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  • by contract
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Please submit your CV to:

mark@yetri.am

info@yetri.am 

Phone:(+37410)566061 

 

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DATA EXCHANGE SYSTEM ON THE BASIS OF GPRS COMMUNICATIONS 

 It is intended for providing of reliable and qualitative communication between two and more unites of the remote and hard-to-reach areas by using of GSM communication net. The system ignores increasing of expenditures dependence on distance between unites, giving bidirectional digital connection and a wide spectrum of possible interfaces of digital and analogue modules, the control and data acquisition in real time for organization of monitoring and control of unitary assemblies.

Universality of the system allows operate with products of world manufacturers: industrial engineering, various types of transmitters of pressure and temperatures, controlled systems of launchers.  

  SCADA SYSTEM

 

 

 

Provides control of difficult technological systems. 

Use of the developed software allows creating a server, operating simultaneously with autonomous systems, ready to operate with difficult industrial,  security and other units.

Systems’ advantages: 

  • ease and cheapness of program and hardware base changes;
  • increasing of functionality without system substitution;
  • possibility of use of  backup communication channels;
  • operation with various industrial protocols.  

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 NEON TRANSFORMER "SPEKS"

The neon transformer "SPEKS" is intended for neon lamp switching ON/OFF. 

Neon lamp

Transformers “SPEKS” (flowable), which haven’t any analog in the world, provide smooth filling glow in tubes (effect of glow flow). 

 neon transformer

 Due to new constructive solutions the device differs from traditional transformers with subminiature weight, high reliability and efficiency up to 65 % energy.

The transformer has the integrated protection at blowout and short circuit in secondary circuit, at false disconnecting under the influences of capacitive current. In case of fivefold repetition of blowout and short circuit modes the transformer is disconnected automatically. 

 

SPECIFICATIONS 

Primary current  180...240 V
Value of input current at maximum load  0,45 A
Output voltage  1500...10 000V
Secondary current  30 mA
Operation temperature range  minus 400C...+400C
Overall dimensions  100x49x36 mm
Weight  0,28 kg
Length of high-voltage terminal  800 mm

   Dim lights

 

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LABORATORY MEASURING COMPLEX OF ANTENNAS

The laboratory measuring complex of antennas is intended for the automated measurement of small-size antennas parameters. It is recommended for equipping of educational laboratories of radio engineering high schools.

Complex includes:
  • The two-co-ordinate rotary system  (RS);
  • Radio measuring equipment;
  • Computer system of control and data processing

  Two-co-ordinate rotary system of antenna  

 
SPECIFICATIONS
 
Rotary angle range:   
   - by azimuth  ± 360º
   - by elevation  45º± 60º
Accuracy of reading rotary angle:   
   - by azimuth  10 angle min
   - by elevation  10 angle min
Angular velocity of rotation:   
   - by azimuth  0,5 rpm
   - by elevation  0,5 rpm
Rotation discreteness:   
   - by azimuth  1angle min
   - by elevation  1angle min
Operation mode of azimuthal and elevation gears   remote, programmable, manual
Maximum mass of mounting antenna  200 N
Rod motion of the antenna vertical conveyance  500 mm

 

Radio measuring equipment:  

Composition and cost of radio measuring equipment is defined on the customer's request by sensitivity and operating frequency range of equipment.

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 DUPLEXER  GSM - 900 MHz

 

  The 900 MHz GSM-duplexer is intended for using on antenna paths of the GSM-900 standard mobile communication system, operating on one transceiver antenna. 

 Decoupling between two paths is provided by high frequency discrimination of each filters included on it. 

 

SPECIFICATIONS

Frequency range 
   -transmission (TX) 890...915MHz
   -reception (RX) 935...960MHz
Losses in band, no more than 1,5 dB
Isolation between TX and RX, not less than70 dB
SWR, no more than <1,5
Input/output resistance  50 Ohm
Maximum input power 50W
Temperature range minus 30..+600C
Connectors SMA-F
Overall dimensions  170x83x39mm
Weight, no more than 300g

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Mini Automatic Telephone Exchange System (MINI ATE)

It is intended for providing of reliable and qualitative communications with possibility to organize  the internal  communication,   increasing efficiency of use of  the existing  local  phone lines, thereby decreasing expenses of it contents.

Automatic  telephone  exchange  (ATE)   satisfies  to  the international quality standards, providing uninterrupted communication at any load. It is simple in installation and is convenient in use.

The  given  advantages in a combination of easy  usage and obtainable price  do automatic  telephone  exchange   by  necessary  attribute  for business life of any firm. 

 

 

 MINI ATE

The main functions of the MINI ATE are: 

  • provision of local communication
  • distribution of incoming calls
  • various categories of access
  • organization of communication both with the centre battery (CB) and with a local battery (LB)
  • convenient remote dialectic mode of provision of commutation by the operator
  • auto attendant
  • inhibit  of intercity calling
  • conference communication
  • divert call
  • selector communication
  • call’s tariffication
  • possibility of connection with a urban telephone network through Е1
  • possibility of a group IP-telephony
  • archiving of conversations on selective channels
  • crypto-protection of communication channels.
  • direct exchange facilities

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