Signal Inputs
Output Characteristics
Input Channels: Four, any can be either control or monitor.
Output Signal: Continuous Gaussian random drive.
Input Sensitivity: Settable from 5 to 1000 mV/g, 20 Vp-p max input.
Drive Level: 16 Vp-p or 3 Vrms maximum.
Current Sources: Four,4 ma each input, 18 VDC compliance, software selectable.
Peak Limiting: User settable from 1 to 4 clipping ratio.
Dynamic Range: > 60 dB.
Control Characteristics
Control Modes: Single channel, Extremal, or Average.
Test Article Protection
Control Channels: One, two, three, or four.
Abort / Alarm Limits: User selectable from 3 dB to 99 dB.
Frequency Ranges: 2.5-500 Hz, 5-1000 Hz, and 10-2000 Hz.
Overall Limits: Overall D, V, and A limits settable by user.
Spectral Resolution: 400 lines.
Control Signal Loss: Open loop and low gain detector check.
Control Profiles: Up to 32 breakpoints; profiles may be saved and recalled from disk.
Pretest Limits: Settable by user.
Control Accuracy: +/- 1 dB typical.
Equalization: Low level equalization of system.
Loop Time: < 3 seconds for analysis and correction.
Manual Abort: From keyboard, mouse, or optional remote panel.
Equalization Time: < 10 seconds for full correction of 10-dB change.
Remote Control (optional): Inputs for Start, Pause, Resume, and Abort; 5-volt logic activated by switch closure to ground.
Analysis Windowing: None, Hamming, Hanning, or Blackman selectable.
Units: English or Metric.
Test Documentation
: Any of the following plots can be stored on disk or printed out in color or monochrome. Reference Spectrum: The control profile that was entered in.
Drive Output: Spectrum of controller drives output signal.
Abort Limits: Upper and lower abort limits lines.
Waveform: Oscilloscope type plot of any channel-input waveforms.
Control/Monitor Channels: Four, any or all channel response spectrums.