Isolated Dynamic Signal Test and Analysis System - DE-918U  Isolated Dynamic Signal Test and Analysis System - DE-918U

DE-918U Isolated Dynamic Signal Test and Analysis System, with the independent shielding for each channel and the high isolation between input and output, specially designed for the accurate measurement of various physical quantities such as strain, stress, force, pressure, displacement, velocity and acceleration under strong conducted interference. Expanded via Gigabit Ethernet switch, dynamic signals over 1,000 channels can be synchronously tested and analyzed by a single computer.

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

 Suitable for accurate measurement in harsh electromagnetic environment with strong interference

 Suitable for multi-point grounding of sensor and acquisition system

 Individual 18-bit SAR A/D converter and dedicated DSP real-time signal processing system per channel with continuous

    sample rates of up to 1MHz.

 Anti-CMV up to 500V and CMR over 120dB

 DMA for real-time, high speed, stable data transmission.

 Built-in bridge completion and excitation

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

 Built-in low-pass filter and anti-aliasing filter

 Suport EID and TEDS

 Support the self-check of strain channel and quickly get current state.

Number of Input Channel1 channle/card, 8/16 card slots
Input CouplingGND, Dif-DC, Sin-DC, AC, IEPE
Input Impedance10MΩ/100pF
Full-scale Voltage Value±0.005V, ±0.01V, ±0.02V, ±0.05V,   ±0.1V, ±0.2V, ±0.5V, ±1.0V, ±2.0V, ±5.0V, ±10.0V, ±20.0V
Indication Error±0.5% of F.S.
Nonlinearity0.05% of F.S.
Zero Drift<±3μV/2h
CMV≥500V (DC/AC peak value)
Full-scale Strain Value±1000με, ±10000με, ±100000με
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, 24V DC
     CurrentMax. 50mA
     Cut-off Frequency (-3dB±1dB)10Hz, 30Hz, 100Hz, 300Hz, 1kHz, 3kHz, 10kHz, PASS
     Flatness<0.1dB Within 2/3 of cut-off frequency
     Stop-band Attenuation- 24dB/Oct.
CommunicationGigabit Ethernet
A/D Converter18-bit SAR
Freq. ResponseDC ~ 100kHz (+0.5dB ~ -3dB)
Continuous Sampling
     Sampling rate (8 channels)Up to 1MHz/channel
     Sampling rate (All channels)Up to 256kHz/channel
Anti-aliasing   filter
     Filtering ModeAnalog filter and real-time digital filter
     Cut-off Frequency1/2.56 of sampling rate
     Stop-band Attenuation- 120dB/Oct. (Fs<100kHz)
     Flatness<0.1dB Within analysis frequency range
Power Supply100 ~ 240VAC / 10 ~ 30VDC
Dimensions237×88×328mm (8 channels chassis)
482×88×328mm (16 channels chassis)
WeightApprox. 6kg (8 channels chassis)
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
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.

 DE-918U DAQ Card
  • 1 input channel

  • Support GND, Dif-DC, Sin-DC, AC, IEPE, three-wire 1/4 bridge, 1/2 bridge and full bridge Input

  • Full-scale voltage Value from ±0.005V to ±10.0V

  • Full-scale strain value from ±1000με to ±100000με

  • Individual 18-bit SAR A/D converter per channel with transient sample rates of up to 1MHz

  • System uncertainty within 0.5% of F.S

  • Frequency response range from DC to 100kHz

  • CMRR over 120 dB.

 Semi-19" 2U Chassis
  • CPU based on on-chip system (SOC)

  • 8 Card Slots

  • Including control card, Gigabit Ethernet communication interface

  • 100 ~ 240VAC / 12VDC power supply

 19" 2U Chassis
  • CPU based on on-chip system (SOC)

  • 16 Card Slots

  • Including control card, Gigabit Ethernet communication interface

  • 100 ~ 240VAC / 12VDC power supply

 DT5857-8 Charge Conditioner (Optional)
  • 1 input channel

  • Max. input charge: 103pC or 105pC, software selectable

  • Input Impedance: >1011Ω

  • Amplifier output sensitivity: 0.1mV/pC and 10mV/pC

  • Indication error:<1%

  • Noise:<10×10-3pC

  • Max. bandwidth: 0.3Hz ~ 300kHz (+0.5dB ~ -3dB)

  • Distortion:<0.5% (Within 30kHz)

  • Dimensions: 50mm(W)×20mm(H)×80mm(L)

 DT5855-8 Charge Conditioner (Optional)
  • 1 input channel

  • Max. input charge: 103pC or 105pC, software selectable

  • Max. bandwidth: 0.3Hz ~ 300kHz (+0.5dB ~ -3dB)

  • Quadratic analog integral

  • 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

  • Dimensions: 30mm(W)×20mm(H)×80mm(L)

 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

  • Dimensions: 30mm(W)×20mm(H)×80mm(L)

 DE-9-S Signal Source Module (Optional)
  • 2 channels

  • 2 irrelevant sources

 TM03 Tachometer (Optional)
  • 2 input channels

  • 30r/min ~ 300,000r/min or 5r/min ~ 20,000r/min

  • PPR:1 ~ 512

 DT5611A Synchronization Box (Optional)
  • 8 inputs

  • Built-in synchronization clock distributor

  • Support multiple clock box cascade connection

  • 19" 1.5U chassis

 C-1 Cable
  • 1-core cable

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


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