Portable Dynamic Signal Test and Analysis System - DE-884U Portable Dynamic Signal Test and Analysis System - DE-884U

The DE-884U Portable Dynamic Signal Test and Analysis System is specially designed for testing the strength and vibration characteristics of large structures, which applies independent distributed modules and can be used to accurately test the physical quantities such as force, pressure, displacement, velocity and acceleration. Expanded via Ethernet switch which supports IEEE1588 network synchronization and POE power supply, dynamic stress-strain or vibration input signals over 1000 channels can be synchronously tested and analyzed by a single computer.

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  • Product Description
  • Specifications
  • System Configurations
  • Software
  • Modules/Accessories

 Modular design, flexible channel configuration, synchronous and parallel sampling of all channels

 Individual 24-bit A/D converters per channel with selectable sample rate of up to 128kHz for high resolution data

 Built-in 24V/4mA biasing circuit, used to acquire output signal of IEPE acceleration sensors and microphones

 High Performance DMA Data Transfer

 IEEE1588 protocol, clock synchronization error is of no more than 200nS

 Built-in bridge completion and Excitation

 Built-in LPF and anti-aliasing filter

 Suport EID, TEDS and POE

Number of Input Channel8 channles
Input CouplingGND, Dif-DC, Sin-DC, AC, IEPE
Input Impedance10MΩ+10MΩ
Full-scale Voltage Value±0.1V, ±0.2V, ±0.5V, ±1.0V, ±2.0V, ±5.0V
Indication Error≤0.2% of F.S.
Nonlinearity≤0.1% of F.S.
Channel Isolation≥80dB
Strain Measurement
     Full-scale Strain Value±1000με, ±2000με, ±5000με, ±10000με, ±20000με, ±50000με
     Indication error≤0.5%±3με
Bridge Excitation
     Bridge ConfigurationFull, half, three-wire quarter bridge
     Bridge Completion Resistors120Ω/350Ω (Three-wire quarter bridge)
50Ω ~ 10000Ω (Half bridge / Full bridge)
     Bridge Voltage2V, 5V, 10V DC
     Cut-off Frequency (-3dB±1dB)30Hz, 300Hz, 3kHz, PASS 
     Flatness<0.1dB Within 1/2 of cutoff frequency
     Stop-band Attenuation >-18dB/Oct.
A/D Converter24 bits
Freq. ResponseDC ~ 50kHz (+0.5dB ~ -3dB)
Max. Sampling Rate128kHz
Anti-aliasing filter
     Cut-off Frequency1/2.56 of sampling rate
     Stop-band Attenuation- 120dB/Oct.
     Flatness±0.05dB (Within analysis frequency range)
Power SupplyPOE/5VDC, 10W
WeightApprox. 490g
Environmental Conditions
     Operating Temperature- 10°C to 50°C
     Operating Humidity20 ~ 90%RH @40°C
     Storage Temperature- 40°C to 60°C
     Storage Humidity90%RH24h@50°C
     VibrationFrequency cycle range: 5Hz ~ 55Hz ~ 5Hz
Drive amplitude (peak): 0.19mm
Sweep frequency: ≤1Oct./min
Duration of resonant: 10min
Vibration direction: x, y, z

Figure 1  Single System Block Diagram

Figure 2  Multi-system Block Diagram

 DE-BPS Basic Platform Software

  • Running on XP/Win7/Win8/Win10 operating system

  • Parameters setting, Function control, Real-time/post-acquisition analysis, data browsing, cursor readouts, scaling curve, data management and simple processing, report generation, long-term continuous data recording, etc.

  • Optional of 4, 8 and 16 100M Ethernet ports

  • 1 Gigabit Ethernet ports

  • Support POE

  • Support IEEE1588 network synchronization

  • 220V AC power supply

 C-4 Signal Input Cable
  • 4-core cable

  • Default 5m bare cable or 1.5 m cable with bridge box


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