Testing and Measuring

RAMET a.s. has a variety of measuring/testing capabilities and tools for precise antenna testing and measurements. 
Among the most important tools belong:

  • Outdoor Antenna Measuring Range
  • Anechoic Chamber
  • EMC Laboratory 
  • Diagnostic Centre of Low- and High Frequency Technology
  • LEICA AT402 3D Mobile Measuring Device 
  • WENZEL LH108 3D Coordinate Measuring Machine

OUTDOOR ANTENNA MEASURING RANGE 

Description:

The antenna range is designed for far-field measurements of antenna systems in free space.

Contains:

  • Agilent PNA Network Analyzer
  • NSI Frequency Converter (0.1 – 6 GHz)
  • NSI Distributed Frequency Converter (1 – 26.5 GHz)
  • NSI-RF-5918 Beam Controller
  • Special software
  • System of reference antennas
  • Positioning system
  • Set of transmitting antennas
  • Agilent PSG generator (250 kHz – 20 GHz)
  • Power amplifiers
  • RF cables and components
  • Control cables

Main Features:

  • NSI-RF-PNA20-001 RF system is employed
  • makes it possible to collect data at 40 frequencies simultaneously
  • frequency range of measurement from 800MHz to 20GHz
  • dynamic measurements (40, 60, 80, 100 dB)
  • distances available for measurement: 1 024 m or 70 m
  • maximum weight of the antenna to be measured: 4000kg

Allows to measure:

  • radiation characteristics in E- and H-planes in far field
  • gain
  • ellipticity
  • polarization characteristics

ANECHOIC CHAMBER

Enables: 

  • to record directional radiation patterns
  • to measure gain in swept frequency band
  • to check and set the ellipticity
  • to set and measure differential phase and amplitude
  • to set and optimize the SWR and through-way attenuation

Main Technical Parameters:

  • frequency range of measurement: 30MHz - 40GHz
  • available inner space covered with pyramidal RAM length:
    11.1 m; width 7.4; height: 6.9 m
  • positioning system for scanning directional patterns:
    azimuth + 180°
    elevation + 45°
  • carrying capacity of the positioning system: 
    maximum 300 kg
  • vertical positioning mechanism with polarized head

EMC LABORATORY

For In-House Measurements of
ELECTROMAGNETIC COMPATIBILITY

  • measurement of radiated interfering field in a frequency band from 30 MHz to 3 GHz in a screened anechoic chamber
  • measurement of interfering signal on power line or output clamps in a frequency band from 9kHz to 30MHz
  • for all measurements standardized detectors of peak, quasi-peak and mean value can be used

DIAGNOSTIC CENTRE OF LOW-  AND HIGH-FREQUENCY TECHNOLOGY

Allows to:

  • test climatic resistance
    (VC3 7150 climatic chamber – Vötsch Industrietechnik)
  • temperature range: -70°C ÷ 180°C
  • humidity range: 10%  ÷ 98%  under temperatures ranging from 10 to 100°C
  • test room dimensions: H 950 x W 1060 x D 1475 mm
  • programmable controlling of temperature and humidity courses


  • measure temperature courses and dependences
    (MS5 – Comet system)
  • measurement of temperature and humidity courses at several points with a possibility of data recording


  • perform mechanical vibration tests
    (L620M – ETS solution)
  • frequency range: 0 ÷ 3500 Hz
  • maximum double amplitude: 51 mm
  • maximum force applied for sinusoidal vibrations:6 000 N
  • maximum acceleration for sinusoidal vibrations: 100 g
  • load-carrying capacity of vibration exciter: 300 kg
  • ability to generate harmonic oscillation, or mechanical vibrations defined by a client


  • measure microwave parameters
    (FSU50 + FS-Z75 + FS-Z90 + FS-Z110 
    - Rohde & Schwarz)
    (N5531S - Agilent)
  • measurement of amplitude-frequency qualities of oscillators and generators up to frequency of 110 GHz
  • measurement of absolute value of microwave signals up to 44 GHz from -140 dBm


  • measure DC/AC voltage and resistance
    (3458A - Agilent)
  • 8˝ digit multimeter available, enabling signal sampling at a speed of as much as 100 kS/s


LEICA AT402 3D MOBILE MEASURING DEVICE 

LeicaAbsoluteTracker AT402 is a 3D mobile measuring device, which enables extremely precise measurements at ultra long distances - it is a device serving to perform large-size spatial measurements. 

WENZEL LH108 3D COORDINATE MEASURING MACHINE

3D coordinate measuring machine produced by a German company WENZEL enables very precise measurements of product elements and their subsequent comparision with mathematical model. 

Product categories

News

PF 2020 20.12.2019 -
Minister of the Interior of the Czech Republic visited RAMET 29.11.2019 - On Wednesday November 20, 2019, First deputy Prime Minister and Minister of the Interior Jan Hamáček visited our company to make himself acquainted with premises where Škoda Octavia combi vehicles are being equipped with a variety of special equipment for law enforcement purposes.

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