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.
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 Channel | 8 channles |
| Input Coupling | GND, Dif-DC, Sin-DC, AC, IEPE |
| Input Impedance | 10MΩ+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 Configuration | Full, half, three-wire quarter bridge |
| Bridge Completion Resistors | 120Ω/350Ω (Three-wire quarter bridge) 50Ω ~ 10000Ω (Half bridge / Full bridge) |
| Bridge Voltage | 2V, 5V, 10V DC |
| LPF | |
| Cut-off Frequency (-3dB±1dB) | 30Hz, 300Hz, 3kHz, PASS |
| Flatness | <0.1dB Within 1/2 of cutoff frequency |
| Stop-band Attenuation | >-18dB/Oct. |
| Communication | Ethernet |
| A/D Converter | 24 bits |
| Freq. Response | DC ~ 50kHz (+0.5dB ~ -3dB) |
| Max. Sampling Rate | 128kHz |
| Anti-aliasing filter | |
| Cut-off Frequency | 1/2.56 of sampling rate |
| Stop-band Attenuation | - 120dB/Oct. |
| Flatness | ±0.05dB (Within analysis frequency range) |
| Power Supply | POE/5VDC, 10W |
| Dimensions | 188×102×32mm |
| Weight | Approx. 490g |
| Environmental Conditions | |
| Operating Temperature | - 10°C to 50°C |
| Operating Humidity | 20 ~ 90%RH @40°C |
| Storage Temperature | - 40°C to 60°C |
| Storage Humidity | 90%RH24h@50°C |
| Vibration | Frequency 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.
| Switch | |
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| C-4 Signal Input Cable | |
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