Spike Type Pulser / Receiver

DPR300 Pulser / Receiver

The DPR300 is a computer controlled ultrasonic pulser/receiver with an extremely low noise receiver. Instrument controls include receiver gain, high and lowpass filter cutoff frequency selection, pulse energy, pulse amplitude, pulser impedance, damping level, pulse-echo or through transmission mode select, pulse repetition rate, and pulser trigger source select. A Manual Control option is available.

The DPR300 is designed for exacting applications. The rapid-recovery receiver is fully shielded from electromagnetic noise and interference to ensure a high signal to noise ratio. In addition, the pulser impedance, pulse energy, and pulse amplitude may be individually adjusted to optimize the excitation pulse for a specific application or transducer.

The DPR300 includes a Windows-based software control program to enable immediate usage in your application. Multiple DPR300’s, and other JSR Ultrasonics instruments can be controlled from one computer using a hardware daisy chain interconnection scheme. Areas of application include computer-controlled imaging and measurement systems, NDE systems, research and development, materials analysis and inspection, transducer evaluation, and exacting low-noise measurement systems.

  • Fully digital computer controlled pulser/receiver
  • Up to 450V pulse amplitude; 900V optionally available
  • Pulse rise time <5ns (10 ~ 90%)
  • 16 damping values
  • Bandwidth 35 MHz (-3dB); 50MHz (-3dB) optionally available
  • Ultra low-noise receiver (49μVp-p input referred at 60dB gain, 35MHz)
  • Receiver Gain 80dB
  • High-pass and low-pass frequency filter (6 steps each)



DPR500 Pulser / Receiver

The DPR500 DUAL Pulser/Receiver is the first dual channel, modular instrument consisting of two complete pulser/receivers integrated into one unit. Receiver modules are currently available in the following bandwidths: 500 MHz, 300 MHz, and 50 MHz. The DPR500 may also be configured as a single channel instrument.

The DPR500 utilizes remote pulsers. This approach enables the pulser to be located in close proximity to the transducer. By eliminating long lengths of cable between the pulser and transducer, cable effects that can produce undesirable reflections and ringing are minimized. A variety of interchangeable remote pulsers are available to accommodate a wide range of transducer frequencies and energy requirements.

Instrument functions include adjustable damping, gain, pulse amplitude, pulse energy, pulse repetition rate, high pass filters, low pass filters, echo or through mode select (dependent on pulser selection), and pulser trigger source. The rapid-recovery receiver and the pulser circuitry are fully shielded from electromagnetic noise and interference to ensure a high signal to noise ratio.

The DPR500 includes a Windows-based software control program. An unlimited number of instrument setups can be stored and retrieved. Multiple JSR instruments may be connected to the same host computer.

  • Fully digital computer controlled pulser/receiver
  • Two independent receiver modules, or one single channel instrument
  • 500/300/50MHz receiver bandwidth (-3dB)
  • Pulser matched to the interchangeable remote pulsers
  • 72/80dB gain low-noise receiver



PRC50 Pulser / Receiver

The PRC50 is a versatile single-channel pulser-receiver on a half-length PCI card.

The wide-bandwidth low-noise PRC50 receiver has inputs for T/R (Transmit-Receive) and Through transducer signals. The receiver can amplify either input signal while maintaining excellent isolation from the other signal. In addition, the PRC50 receiver can independently amplify both input signals, and output the sum of the amplified signals.




   Pulser voltage    Adjustable 100 V ... 475 V
   Damping    8 discrete values, 28 ... 128 Ω
   Trigger source    Internal / external
   Gain    -14 ... +60 dB
   Input mode    Pulse-echo T/R, through transmission, or both   
   Bandwidth    0.3 ... 50 MHz (-3dB)
   High pass filter    0.3 / 1.9 / 5.0 / 12.5 MHz
   Low pass filter    7.5 / 15 / 25 / 50 MHz
   Noise    145 µV at 60 dB
   Signal output impedance       50 Ω
   Signal output voltage    ± 1 V into 50 Ω
   Interface    PCI bus
   Power consumption    7.5 W maximum
   Size    98.4 × 174.6 mm (H × W)
   Weight    0.29 kg