PCI-2 AE System

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The PCI-2 AE System on a card is a 2-channel data acquisition and digital signal processing system on a single full-size 32-bit PCI-Card.

Engineered to be low noise, the PCI-2 features 18 bit A/D and 40 MSample/second acquisition provides extremely high speed and high resolution data collection for research applications making it the ideal board for small scale testing in universities and materials laboratories.

The wide bandwidth of 1kHz to 3 MHz allows the board to use the full potential of any MISTRAS AE sensor. For more precise frequency analysis it features programmable hardware filters which can be controlled using AEWin software.

Built in, hit based, Waveform collection allows for raw data to be saved for post analysis and for high speed or continuous emission events, wave form streaming passes digitized RF signals directly to the computer for storage and analysis.

Features

  • Very low noise, low cost, 2 channel complete, AE system on a card, with waveform and hit processing built in, on one full size, industry standard, 32-bit PCI card.
  • Internal 18-bit A/D conversion and processing for better resolution (less than 1 dB) at very low signal amplitudes, and low threshold settings, providing superior low noise performance.
  • 40 MHz, 18-bit A/D conversion with real time sample averaging (2x or 4x) to provide enhanced accuracy beyond any existing AE system on the market.
  • Built-in, real time AE feature extraction and DMA transfer on each channel for high speed transient data analysis at high hit rates directly to the Hard Disk (HD).
  • Built-in waveform processing with independent DMA transfer on each channel for high speed waveform transfer and processing.
  • Designed with extremely high-density FPGAs and ASIC ICs, to provide extreme high performance and minimize components and cost.
  • 4 High Pass and 6 Low Pass filter selections for each channel, totally under software control.
  • AE Data Streaming is also built into the PCI-2 board allowing continuous recording of AE waveforms to the hard disk at up to 10 MSamples/sec rate (on one channel, 5 MSamples/second on 2 AE channels).
  • Up to 8 parametrics on each PCI-2 board with 16-bit A/D converter and update rates up to 10,000 readings/second. The first parametric is a full Instrumentation conditioning channel providing signal conditioningincluding gain control, offset control and filtering options for direct sensor input. The second provides a straight ±10 volt input for conditioned sensor outputs.
  • Hit LED, and Audio drivers are built within the PCI-2 board, so that LEDs can be attached directly and sound can be processed via the PAC PCI-Audio Card (option).
  • Digital signal processing circuitry virtually eliminates drift, thereby achieving high accuracy and reliability.

Specifications

Physical
Size 13.415" L x 4.3" H x 0.7" T
Weight 1.1 lbs
Power consumption 12 Watts
DC Power +12.0 volts, 1.0 amps
-12.0 volts, 0.05 amps
+5.0 volts, 1.5 amp
Environmental
Operating Temperature 41° – 115° F (5° - 45° C)
Storage Temperature -4° – 140° F (-20° - 60° C)
Electrical
AE Inputs 2 channels
Input Impedance 50 ohm or 1000 ohm, jumper selectable
Preamplifier Power Jumper selectable 0 volt or 28 VDC, 100 ma current limited
(on BNC center conductor for phantom powering of external preamplifiers)
Sensor Testing AST built-in
Frequency Response 1 kHz – 3 MHz (at -3 dB points)
Signal processing
AE Signal Gain 0dB, 6 dB computer selectable input signal scaling
Filters 4 High Pass - computer selectable filters
1 kHz, 20 kHz, 100 kHz, 200 kHz, 4th order Butterworth
Noise: Min. Threshold 17 dB without AE Sensor, 22 dB with (1 kHz - 3 MHz bandwidth)
R15 AE Sensor and 2/4/6 preamplifier, 24 dB with
R15I Integral Preamp sensor.

Note: Lower noise will be achieved using narrow band filtering.
ASL Noise 4 dB maximum, (with no input)
Max. Signal Amplitude 100 dB AE
ASL 99 dB
ADC Type 18 bit 40 MSPS per channel maximum
Dynamic Range > 85 dB, 2 kS/s, 5 kS/s, 10 kS/s, 20 kS/s, 50 kS/s
Sample Rate Computer selectable 100 kS/s, 200kS/s, 500kS/s, 1M-Samples/sec,
2 MSPS, 5 MSPS, 10 MSPS, 20 MSPS, 40 MSPS
Sample Averaging 40 MSPS with 2x averaging,
for a 20 MSPS effective sample rate
Extracted AE Features Time of 1st Threshold Crossing, Counts to Peak, Peak Amplitude,
Signal Strength, Duration, Rise Time, Counts,
True Energy, RMS, ASL, Parametric 1 and 2.
Analog Parametrics
Parametric Channels 8 Channels
Parametric A/D Resolution 16 bits
Parametric Sample Rate 10 kHz sample rate for each analog parametric
Time Driven Data Rate Controlled by software 10 msec. to 1800 seconds
Time Parametrics All 8 parametrics are available in time data set
Parametric #1,3,5,7 Functions: Computer selectable Input Range ± 10.0v, ±1.0 v, ±0.10v, ±0.01v
Computer selectable 30 Hz Low Pass filter or none 5.0 V software
programmable offset control with 12 bit DAC 0 – 10 volt
programmable excitation voltage for strain gage bridges
Parametric #2,4,6,8 Functions: Parametric Input Range ± 10.0 v fixed, no filter
Digital I/O 8 Digital Inputs, 8 Digital Outputs (5 v tolerant), TTL level compatible)
AE Out and Audio Monitor Interface Analog switch and buffer to select desired AE channel
to be routed to standard PAC audio monitor board
or AE output signal
LED Activity Monitor On board LED driver to directly drive LED’s on front panel.
LED minimum ontime is 0.05 seconds