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ULTRASONIC PULSER&RECEIVER
OPGUD-2
(for EMAT-transducers)
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Price: 1050,- Euro |
OPGUD-2 is an ultrasonic pulser&receiver
suitable for work with all ultrasonic transducers with about 0.5-40MHz
frequency.
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Method of operation:
The rising edge of the Trigger signal (see picture) initiates the
transducer charging process which takes 3 ms. After this time, the
falling edge of the Trig_Out is generated which indicates the end of the
transducer charging process and a transistor switch which discharges the
transducer is turned on. This discharge process has a duration of about
20ns, depending on the capacity of transducer used.
- Pulse amplitude adjustment is made
using potentiometer. Max. 360V, min: 50V.
- The pulser contains integrated
receiver unit with 40dB amplifier
- Power consumption: about 5W
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Because of the very low
output impedance of the device (<1 Ohm) and short discharge time, the
pulse generated with this device could be concerned as a real pulse
answer for the most transducers.
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shipment includes: |
- Pulse transmitter and receiver for
ultrasonic transducers
- 110 - 250V AC power supply with
connector for standard computer type cable
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Description of inputs, outputs, control elements and their functions |
Rear side of the device:
- +12 V DC input for connection of AC
power supply. Internal wire of the connector is plus 12V DC.
- The power switch.
Front side of the device:
- IN (output/input) should be
connected to the transducer with a BNC connector cable.
Caution: This connector have high voltage during pulse
duration, and should be not directly connected to oscilloscopes or
amplifiers without ability to withstand such voltage.
- TRIG outputs the internal TTL
trigger signal (pulse follows on the falling edge). Used for
synchronization. The triggering frequency is about 500 Hz. The
potentiometer on the rear wall of the device allows to adjust
trigger frequency. It can be set from 530Hz to 2000Hz.
- OUT (output): If transducer
receives a signal, it can be observed on this output. Receiver is
working continuously. Output has 50 Ohm impedance.
- Amplitude of the pulse can be
adjusted with potentiometer Ampl.
- Red diode is shining, if the device
is switched on and working.
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| Options: |
- External trigger input.
- Amplifier, where the amplification is
controlled by the potentiometer from: minus 20db (attenuation) - 60dB.
- Trigger generator with frequency
adjustment with potentiometer.
- The instrument size can be altered to
serve the particular customer needs.
- Maximum pulse amplitude of 600V.
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