PARTICLE IMPACT NOISE DETECTION - PIND

The BW-LPD-DAQ4000 is designed to detect loose particles in all kinds of products from your smallest integrated and discrete components, to your largest hybrids and subassembly packages. With speed and accuracy critical to your bottom line, the BW-LPD-DAQ4000 allows you to quickly select your test of choice and begin automatically testing without fiddling with knobs or entering complicated programming steps.

 

The BW-LPD-DAQ4000 comes preprogrammed to meet or exceed MIL-STD-883 Method 2020 for hybrids and MIL-STD 750 Method 2052 and provides the option to store the results of each test run.

System Features:

  • Computer based controller with predefined MIL-STD test sequences stored

  • Create unlimited custom tests with multiple vibration frequencies and acceleration and other parameters to meet unique requirements 

  • Easily store and recall custom test 

  • Continuous on screen display of test frequency, vibration level, etc.

  • Test platens available in the following sizes:

    • ø0.8"

    • ø2"

    • 4.2" x 3.6" (for larger hybrids)

    • ø6" 5 Sensor head

    • Custom head and shaker for testing packages up to 5kg/10lbs at 20Gs

  • On screen monitoring of signals created by loose particles

  • On screen indicator signals particle detections

  • Audio monitoring of signals created by loose particles

  • Stops the test when particle noise threshold is exceeded (user selectable)

  • Easily store and recall test results (New)

  • Supports both fully automatic and manual operation modes

  • Sensitivity Test Unit (STU) provided to verify MIL-STD compliance

MECHANICAL SHOCK TEST SYSTEM - MST-E5000

Modern electronic devices must endure the effects of repetitive mechanical shocks and sustain operation to achieve customer satisfaction. The BW-MST-E5000 is designed to produce these high impact shocks associated with dropping a device.

Precise control of the shock amplitude is provided by the PC based controller which utilizes a high performance multifunction analog, digital and timing input/output and data acquisition board with custom software running in a Windows environment. The data storage capacity can be used for careful analysis and to generate test reports.

 

The Mechanical Shock Tower develops the kinetic energy electromagnetically. An iron core "bullet" is attracted to the magnetic core of the solenoid by the dense magnetic field that is created as current flows through the field coil of the shock tower. As the bullet is drawn into the center of the magnetic field the acceleration increases exponentially as the gap reduces to zero on impact causing the high impact shock. The properties of the impacting materials determine the pulse shape and duration. The RTV strike pads supplied with the system provide half sine pulses of 2.0 - 0.5 millisecond durations and an aluminum for <0.3 millisecond.

System Features & Specifications:

  • Shock Waveform: Half Sine

  • Shock Duration Selectable: 0.2 - 2.0 Milliseconds

  • Pulse Output Programmable: 0-5000 Gs peak

  • Shaker: 2000LBF peak sine

  • Stroke: 1.00"

  • Velocity: 240"/second

 

DIGITAL SINE VIBRATION - DSC-1

PC Based Digital Sine Vibration Controller

System Features & Specifications

  • Acceleration: 0 to 200 g-pk.

  • Velocity: 0 to 200 in /sec

  • Displacement: 0 to 10 in. pk-pk.

  • Frequency Range: 2 to 6250 Hz, digitally synthesized.

  • Stability: +/- 100ppm/°C, crystal-controlled.

  • Distortion: <0.50% thd 0.25% typical.

SWEEP MODES:

  • CONTINUOUS: Up to 9999 cycles between set limits.
  • HALF-CYCLE: Up or down for response plotting.

  • MANUAL: With keyboard arrows.

  • SWEEP: Logarithmic, linear, or Mil 167.

SWEEP RATES: 

  • 0.1 to 9.99 oct/min for log or 0.1 to 99.9 Hz/sec for linear.
  • INPUT CHANNELS: Two channels: one control & one monitor
  • INPUT SENSITIVITY: Settable from 8 to 1000 mvg, 20 vp-pmax input.

  • CURRENT SOURCES: 4 ma each input, 18 vdc compliance on each channel.

SIGNAL OUTPUT: 

  • SERVO OUT: 0-5 vrms for amplifier drive, short protected.
  • Up to 32 frequency breakpoints or levels of D,V. or A may be specified for each test; profiles may be stored on disks.

SERVO COMPRESSOR:

  • DYNAMIC RANGE: >70 dB.
  • CONTROL ACCURACY: <+/- 0.5 dB nominally.

  • COMPRESSION RATE: Slow- 0.1 dB/sec/Hz, Med - 0 3 dB/sec/Hz, Fast- 1.0 dB/sec/HZ.

  • COMPRESSION SPEED LIMIT: Programmable from 200 to 1000 dB/sec.

  • CONTROL LIMITS: From 0.2 to 200 g with 10 mv/g input

 

DIGITAL RANDOM VIBRATION - DRC-1

PC Based Digital Random Vibration Controller

System Features & Specifications

  • Frequency Range: 1.25-250 Hz, 2.5-500 Hz, 5-1000 Hz, and 10-2000 Hz.
  • Spectral Resolution: 400 lines.

  • Control Profiles: Up to 32 breakpoints: profiles may be saved and recalled from disk.

  • Control Accuracy: +/- 1 dB typical.

  • Loop Time: < 3 seconds for analysis and correction.

  • Equalisation Time: < 10 sec, for full correction or 10 dB change.

  • Analysis Windowing: Off/On Hanning, Hamming or Blackman selectable.

SIGNAL INPUTS:

  • INPUT CHANNELS: Two channels: one control & one monitor.

  • INPUT SENSITIVITY: Settable from 8 to 1000 mv/g, both channels 20 vp-p max input.

  • CURRENT SOURCES: Switchable 4 ma each input 18 vdc compliance on each channel

     

OUTPUT CHARACTERISTICS:

  • OUTPUT SIGNAL: Continuous Gaussian random drive.
  • DRIVE LEVEL: 16 v peak-to-peak or 3vrms maximum.

  • PEAK LIMITING: User selectable from 1 to 4.

  • DYNAMIC RANGE: >60 dB.

DIGITAL CLASSIC SHOCK CONTROLLER - CSC-1

The CSC- I will perform all of the 'classical' shock tests as defined in MIL-STD-810 and is equally useful for environmental qual testing or production test screening. Automatic calculation of pre- and post-pulse compensation assures the maximum performance from your test system. Test setups are done in a setup screen using English or Metric units and results are plotted in a plot screen. It is available on a dual-function Random / Classical Shock Control Card. The software generates the required pulse, and the waveform generator drives the shaker system to produce the desired shock pulse.

INPUT CHARACTERISTICS:

  • INPUT CHANNEL: One control channel.

  • INPUT SENSITIVITY: Settable from 8 to 1000 mv/g. 20 vp-p max input.

  • CURRENT SOURCE: Switchable 4 ma, 18 vdc compliance.

OUTPUT CHARACTERISTICS:

  • OUTPUT SIGNAL: Filtered analog drive waveform.
  • DRIVE LEVEL: 16v peak-to-peak maximum.

  • DRIVE LIMITING: User settable from 0 to 16 vp-p.

  • DYNAMIC RANGE: >60 dB.

CONTROL CHARACTERISTICS:

  • WAVEFORMS: Half-sine, triangle trapezoidal, terminal or initial peak sawtooth, quarter-sine, parabolic-cusp.
  • PULSE DURATION: 1 to 100 Msec.

  • PULSE PROFILES: Profiles may be saved and recalled from disks.

  • MODE: Single pulse or repetitive pulses.

  • TEST LEVEL: 0.5 to 200 g-peak.

  • CONTROL ACCURACY: +/- 1dB typ.

  • SAMPLING FREQUENCY. 1.28 KHz 10.24 KHz.

  • EQUALIZATION TIME: <5 sec. for low level equalization 1 system transfer function.

 

Headquartered in Costa Mesa, California, B&W Engineering was founded in 1976 by Jack Brown and Hubert White. Garry Black Joined B&W Engineering in 1981 and became President in 1986. Charting his own course for the future, Garry has driven B&W to produce high-reliability quality products by providing best in class environmental testing solutions.

As a member of the Institute of Environmental Sciences (IES) and the International Society of Hybrid Microelectronics (ISHM) Garry has tirelessly pursued the study of microelectronic assembly, electronic reliability, and electro-mechanical engineering. Hundreds of systems later, B&W Engineering continues to innovate and adapt to the needs of our customers providing both commercial-off-the-shelf best in class systems as well as delivering one-off custom configurations. B&W Engineering is committed to delivering quality and leveraging emerging technologies and techniques to deliver low cost, high performance systems.

 

Today, consistent with our founders' vision to be best in class, B&W Engineering manufactures the top performing high reliability and environmental test equipment produced in the world. Our reputation is unparalleled for Particle Impact Noise Detection (PIND), Shock, and Vibration test systems all compliant with MIL-STD-883, MIL-STD-750, MIL-STD-202, CECC6500 and many other industry standards for high reliability testing.

B&W Engineering’s commitment to quality and customer satisfaction has never been greater.

Suppliers of Environmental Test Equipment since 1989

enquiries@p-t-s.co.uk

T: +44 (0)118 986 2000

F: +44 (0)118 986 2800

Unit 1 Manor Commercial Centre

12 Commercial Road

Reading

Berkshire    RG2 0QJ

United Kingdom

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