High Accuracy Dynamic DAQ System - DE-928U
The DE-928U represents a new generation of dynamic signal analysis systems, combining high-speed 1MHz continuous sampling with unparalleled measurement versatility. Designed for structural performance testing across demanding industries, its modular 19-inch architecture delivers laboratory-grade precision in field applications.
Dedicated DSP real-time signal processing system per channel
Independent 18-bit SAR A/D converter per channel with sampling rate of up to 1MHz.
DMA for real-time, high speed, stable data transmission.
Built-in bridge completion and excitation
Built-in 24V/4mA biasing circuit, support IEPE sensors.
Built-in low-pass filter and anti-aliasing filter
Suport EID and TEDS
On-site calibration of stress/strain channels is supported to get the current state quickly
| Name | Detail |
|---|---|
| Number of input channels | 2 channels/card, 8/16 card slots |
| Input Coupling | GND, Dif-DC, Sin-DC, AC, Dif-IEPE, Sin-IEPE |
| Input Impedance | 30MΩ/100pF |
| Input Voltage Range | ±0.005V, ±0.01V, ±0.02V, ±0.05V, ±0.1V, ±0.2V, ±0.5V, ±1.0V, ±5V, ±10V |
| Indication Error | ≦ 0.05% of F.S. |
| Stability | ≦ 0.01%/24h |
| Nonlinearity | 0.01% of F.S. |
| Noise | ≦ 3μVRMS |
| Zero Drift | <1μV/24h |
| CMV | ±10V@DC+60Hz |
| CMR | ≧ 100dB |
| Strain Measurement | |
| Input Strain Range | ±1000με, ±10000με, ±100000με |
| Self-Balancing Range | ±20000με |
| Indication Error | ≦ 0.1%±3με |
| Bridge Excitation | |
| Bridge Configuration | Full, half, three-wire quarter bridge |
| Bridge Completion Resistors | 120Ω/350Ω (Three-wire quarter bridge), 60Ω~10000Ω (Half bridge/Full bridge) |
| Bridge Voltage | 2V, 5V, 10V, 24V DC Within 0.05% |
| Current | Max. 500mA |
| LPF | |
| Cut-off Frequency (-3dB±1dB) | 100Hz, 300Hz, 1kHz, 3kHz, 10kHz, 30kHz, 100kHz |
| Flatness | <0.1dB Within 2/3 of cut-off frequency |
| Stop-band Attenuation | -24dB/Oct. |
| Communication | Gigabit Ethernet |
| A/D Converter | 18-bit SAR |
| Freq. Response | DC~300kHz (+0.5dB~-3dB) |
| Max. Sampling Rate | 1MHz/channel |
| Anti-aliasing filter | |
| Filtering Mode | Analog filter and real-time digital filter |
| Cut-off Frequency | 1/2.56 of sampling rate |
| Stop-band Attenuation | -120dB |
| Flatness | <0.1dB Within analysis frequency range |
| Power supply | 100~240VAC/10~30VDC, 160W (16 channels), 320W (32 channels) |
| Dimensions | 237×133×338mm (semi 19” chassis), 482×133×338mm (semi 19” chassis) |
| Weight | Approx. 8kg (semi 19” chassis and 16 channels), Approx. 14kg (19” chassis and 32 channels) |
| Environmental Conditions | |
| Operating Temperature | -10 to 50°C |
| Operating Humidity | 20–90%RH @40°C |
| Storage Temperature | -40 to 60°C |
| Storage Humidity | 90%RH 24h @50°C |
| Vibration Resistance |
Frequency cycle range: 5~55~5Hz Drive amplitude (peak): 0.19 mm Sweep frequency: ≦1 Oct./min Duration of resonant: 10 min Vibration direction: x, y, z |
Figure 1 Single System Block Diagram
Figure 2 Multi-System Block Diagram
DE-BSP Basic Platform Software
Core Features
Integrated Analysis Modules
Data acquisition and basic signal processing
Order analysis and field dynamic balancing
Impact waveform detection
Experimental modal analysis
Acoustic analysis
Smart Operation System
Modular management for simplified workflow
Automatic system parameter identification
Fully programmable instrument settings (range, filtering, sampling)
Virtual instrumentation with one-click configuration
Technical Specifications
Unified Platform Architecture
Supports multiple DAQ system types on single platform
Visual parameter configuration with real-time status monitoring
Data Management
Intelligent project organization for large-scale experiments
Batch processing and automated report generation
Multiple sampling modes (triggered/continuous)
Advanced Analysis Capabilities
Flexible channel grouping
Custom data flow configuration
Real-time processing (acquisition, storage, display, analysis)
Visualization Tools
Global data navigation
Multiple display modes:
Digital tables and bar charts
X-Y plotters and FFT views
Octave analysis, 2D/3D visualization
Reporting & Output
Interactive Word report generation
Multi-format export capabilities
Customization & Expansion
Open development interface
Plugin architecture for user-created modules
Shared plugin repository
Distributed System Support
Multi-client operation:
Main control terminal (full system control)
Display terminals (remote monitoring)
View layout management for field applications
Selective data storage based on bandwidth
DE-928U DAQ Card
2 input channels
Support GND, Dif-DC, Sin-DC, AC, Dif-IEPE, Sin-IEPE, three-wire 1/4 bridge, 1/2 bridge and full bridge Input
Software-selectable full-scale voltage value from ±0.005V to ±10.0V
Full-scale strain value from ±1000με to ±100000με
Independent 18-bit SAR A/D converter per channel with sampling rate of up to 1MHz
Frequency response range from DC to 300kHz
CMRR over 100 dB
DE-92U Semi-19" Chassis
8 card slots
Including control card, Gigabit Ethernet communication Interface
220VAC / 12VDC power supply
DE-93U 19" Chassis
16 card slots
Including control card, Gigabit Ethernet communication Interface
220VAC / 12VDC power supply
DT5857-8 Charge Conditioner (Optional)
1 input channel
Max. input charge: 10^3pC or 10^5pC, software selectable
Input Impedance: >10^11Ω
Amplifier output sensitivity: 0.1mV/pC and 10mV/pC
Indication error: <1%
Noise:<10×10^-3pC
Max. bandwidth: 0.3Hz ~ 1MHz (+0.5dB ~ -3dB)
Distortion:<0.5％ (<30kHz)
Dimensions: 50mm(W)×20mm(H)×80mm(L)
DT5855-8 Charge Quadratic Integral Conditioner (Optional)
1 input channel
Max. input charge: 10^5pC
Input Impedance: >10^11Ω
Amplifier output sensitivity: 0.1mV/pC and 10mV/pC
Accuracy: <1%
Noise: <10×10^-3pC
Freq. Response: 0.3Hz ~ 300kHz (+0.5dB ~ -3dB)
Distortion: <0.5% (within 30kHz)
Integral Type: No integral, Primary integral, Quadratic integral
Integral Frequency Range:
Primary integral: 10Hz ~ 10kHz or 1Hz ~ 1kHz
Quadratic integral: 10Hz ~ 1kHz or 1Hz ~ 100Hz
Integral Error:
Primary integral: <3%
Quadratic integral: <5%
Dimensions: 50mm(W)×35mm(H)×110mm(L)
DT5856-8 IEPE Quadratic Integral Conditioner (Optional)
Built-in 24V/4mA biasing circuit
Amplifier bandwidth: DC ~ 300kHz (+0.5dB ~ -3dB)
Distortion:<0.5％(within 30kHz)
Integral type: No integral, Primary integral, Quadratic integral
Integral Frequency Range:
Primary integral: 10Hz ~ 10kHz or 1Hz ~ 1kHz
Quadratic integral: 10Hz ~ 1kHz or 1Hz ~ 100Hz
Integral Error：
Primary integral:<3%
Quadratic integral:<5%
Dimensions: 50mm(W)×35mm(H)×110mm(L)
DT3811-8 Current Loop Conditioner (Optional)
1 input channel
Suitable for 2-wire / 3-wire 4 ~ 20mA sensor
24V DC power supply
DT3814-8 Thermistor Conditioner (Optional)
1 input channel
Suitable for Pt10, Pt100, Pt1000 sensors
Measuring temperature range from -200℃ to 850℃
Accuracy: 0.5%±0.5℃
Iout:1mA±2μA
TC-01 Tachometer/Counter Module (Optional)
Number of channel：2 input channels
Rotation rate measurement：
Range: 30 ~ 600000 rpm
Accuracy: ˂ 0.05%±1r
Input signal pulse width: ≥10μs
PPR: 1 ~ 4096
Axis ratio: 0.01 ~ 100
Counter measurement：
Operating mode: support positive/reverse, pulse accumulative count, pulse count per unit time
Reset mode: manual/atuomatic
Pulse count range: 0 ~ 100k/s
Power supply: 5VDC/50mA
DT5944 Signal Source Output Card (Optional)
Number of Channel: 2 channels
Voltage Range: ±10VP
Current: Max. 5mA
Frequency: 0.1 ~ 20kHz
D/A Resolution: 24 bits
Accuracy: 1% within 2kHz
Signal Type: constant frequency sine wave, sweep frequency sine wave, square wave, random, burst random
DT5945 CAN Bus Card (Optional)
Number of channel：2 channels
Protocol: CAN2.0B
Baud rate: 4800bps ~ 1Mbps
Communication mode: duplex CAN bus for sending and receiving
Support dbc file import
Supports standard and extended frame formats
Minimum sending interval: 1s
DT5946 RS485 Communication Card (Optional)
Number of channel：2 channels
Baud rate: 1200bps ~ 115200bps
DT5947 Digital I/O Card (Optional)
Number of channel: 8-Ch DI and 8-Ch DO
Digital input: Support Dry / Wet Contact
Digital output: Power Output (Ch1-Ch4) and TTL Output (Ch5-Ch8)
Power Output: Max. 24V/1A