DVC8-4 Random

Digital Random Vibration Controller Specifications

TEST DOCUMENTATION:

Any of the following plots can be stored on a disk or printed out in color or black and white on any Windows compatible printer.

  • CONTROL CHANNEL: Control spectrum.
  • MONITOR CHANNEL: Response spectrum.
  • CONTROL/MONITOR: Control spectrum and response spectrum.
  • DRIVE OUTPUT: Output spectrum of card
  • CHANNEL #1 WAVEFORM: Oscilloscope-type display of channel #1 analog waveform.
  • CHANNEL #2 WAVEFORM: Oscilloscope-type display of channel #2 analog waveform.

Download: DVC-4/8 Digital Random Vibration Controller Operation Manual

SYSTEM REQUIREMENTS:

  • COMPUTER: 486DX33 or better with vga display, 8 mb ram, hard disk and Windows 3.1 minimum. Pentium with 16mb ram and Windows 95 recommended.
  • POWER REQUIREMENTS: Powered by computer buss, <10W total.
  • SIZE: Standard AT 3/4 size PC card (11″x 4.5″).
  • EXTERNAL CONNECTIONS: Via DB-25 connector to junction box.

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.

CONTROL CHARACTERISTICS:

  • 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.
  • EQUALIZATION TIME: < 10 sec, for full correction or 10 dB change.
  • ANALYSIS WINDOWING: Off/On Hanning, Hamming or Blackman selectable.
  • UNITS: English or Metric.

TEST ARTICLE PROTECTION:

  • ABORT UNIT: User selectable from 3dB to 99dB.
  • OVERALL LIMITS: Overall D,V,A limits settable by user.
  • CONTROL SIGNAL LOSS: Open loop detector.
  • PRETEST LIMITS: Settable by user.
  • EQUALIZATTON: Low level equalization of system.
  • MANUAL ABORT: From keyboard or mouse.

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