RITEC MEDARS MULTIPLE EMAT DRIVER AND RECEIVER SYSTEM

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RITECMEDARS MULTIPLE EMAT DRIVER AND RECEIVER
SYSTEM
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Drive Phased Arrays of EMATs at high powers
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MEDARS Overview

• Drive up to 8 Electromagnetic Acoustic
  Transducers (EMATs) with precise control of
  phasing between transmitters
• Very High Power (up to 10 KW)
• Unique Bipolar Square Wave Pulse
• Low Noise Broadband Receiver
• Adjust phase delay with sub nanosecond resolution

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MEDARS Overview
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MEDARS Features Benefits

• Unique Bipolar Square Wave Burst

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MEDARS Features Benefits

• Precise control of Phasing and delays between
  transmitter pulses

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MEDARS Features Benefits

• Adjust phase delays for constructive interference
  between transmitters
• improves signal-to-noise
• adjust for beam focusing or direction control

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MEDARS Features Benefits
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MEDARS Features Benefits

• High Efficiency, Low Output Impedance

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MEDARS Features Benefits

• Generate High Currents in EMAT

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MEDARS Applications

• Provides high power outputs (9KW) into impedance
  matched EMATs
• Efficient transmitter allows smaller size and
  permits up to 8 transmitters and receivers in a
  single instrument
• Ideal for industrial applications such as flaw
  detection, weld evaluation

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MEDARS Applications

• Ideal for industrial applications such as flaw
  detection, weld evaluation

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MEDARS Transmitter Specifications

• Frequency Range 250 kHz to 5 MHz
• Output Amplitude 0 V to 800 V peak to peak into
  50 Ohms with 12 bit range of adjustment 440 V
  peak to peak into 5 Ohm load.
• High Power up to 9.7 KW into 5 Ohms
• Burst Width adjustable to 250 cycles
• Independent control of pulse amplitude and delay
  for 8 transmitters

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MEDARS Receiver Specifications

• Up to eight high Gain (95 dB) broadband receivers
  with low noise preamplifiers
• Two receiver inputs for through transmission and
  pulse/echo with a single EMAT
• Adjustable high pass and low pass filters
• Frequency range 250 kHz to 5 MHz
• Output linear to 2V peak to peak
• Multiplexed and summed outputs available