PLACID PQ401-B Four-Channel Data Acquisition Unit | 24-bit, 192 kS/s, IEPE or Voltage, Ethernet
PQ401-B
The PQ401-B is a compact four-channel data acquisition unit with simultaneous 24-bit sampling at up to 192 kS/s per channel. Each BNC input accepts IEPE sensors, with constant-current supply built in, or voltage signals up to ±10 V. The data are streamed over Ethernet with an open TCP/IP protocol, s...
Companion Software Included
Works seamlessly with PLACID Studio — advanced software for real-time FFT, spectrogram, octave analysis, and sound level measurement.
In-Depth Overview
The PQ401-B is a compact four-channel data acquisition unit with simultaneous 24-bit sampling at up to 192 kS/s per channel. Each BNC input accepts IEPE sensors, with constant-current supply built in, or voltage signals up to ±10 V. The data are streamed over Ethernet with an open TCP/IP protocol, so the unit works directly with PLACID Studio or with your own applications in C, C#, MATLAB or Python. Complete system: PQ401-B plus PLACID Studio, with the sound level meter and basic vibration modules included and further analysis modules optional. 114 dB dynamic range, 110 x 107 x 28 mm, 520 g, powered from DC 12 V or an external battery pack. Placid Asia is the authorized distributor for Thailand and ASEAN.
Recommended Companion Software: PLACID Studio
Pair this DAQ device with PLACID PLACID Studio — an integrated software platform for real-time acoustic and vibration signal acquisition, visualization, and analysis. Together they form a complete measurement and analysis chain for R&D, university research, and industrial testing.
- Real-time FFT spectrum analysis up to the full bandwidth of your DAQ
- Spectrogram (waterfall) display for time-frequency visualization
- 1/1 and 1/3 octave band analysis per IEC 61260
- Sound Level Meter module (Leq, Lmax, Lmin, LN) per IEC 61672
- Data export to CSV for post-processing in MATLAB or Python
- Compatible with PQ401-B, PQ441-C, and PQ1601
Typical Applications
Common use cases and application scenarios for this product
Key Features & Benefits
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Technical Specifications
Technical specifications and parameters
| Parameter | Specification |
|---|---|
| Weight | 520 g |
| Dimensions | 110 × 107 × 28 mm |
| Input type | Voltage / IEPE |
| Resolution | 24-bit |
| IEPE supply | 4 mA / 24 V |
| Power supply | DC 12 V / external battery |
| Random noise | 0.03 mVrms |
| Dynamic range | 114 dB |
| Sampling rate | up to 192 kS/s per channel |
| Data interface | Ethernet, TCP/IP (open protocol) |
| Input channels | 4, sampled simultaneously |
| Input coupling | AC / DC |
| Input interface | BNC |
| Anti-aliasing filter | Yes |
| Maximum input voltage | ±10 V |
| Software development kit | C, C#, MATLAB, Python |
For detailed specifications and compliance information, please visit the manufacturer's product page or download the resources in the Resources tab.
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