QuantumX 8‑channel Universal Amplifier

MX840B: Universal and Efficient Measurements Made Effortless

The MX840B is a compact, 8‑channel universal amplifier engineered for fast, precise, and highly flexible data acquisition. With support for 17 sensor technologies and robust 24‑bit measurement performance, the MX840B delivers reliable results from laboratory test benches to demanding field environments.

Key features

• 8 individually configurable inputs (electrically isolated)
• Connection of more than 17 transducer technologies including:
  • Strain gauges: full-, quarter and half-bridge
  • Current fed piezoelectric transducers (IEPE, CCLD, ICP^®)
  • Piezoresistive full bridge
  • Resistance thermometers: Pt500, Pt100, Pt1000
  • Thermocouples type K, N, R, S, T, B, E, J with cold junctions in the plug
  • Resistance transducer (for example, PTC, NTC, KTY): 5000 Ω
  • Potentiometric transducer
  • Inductive full or half bridge sensors
  • Linear variable differential transformer (LVDT)
  • Electrical voltage transducer: 100 mV, 10 V or 60 V
  • Electrical current transducer: 20 mA
  • Torque sensors
  • Incremental encoder
  • Pulse counter
  • Frequency measurement
  • Rotational speed (rpm)
  • Synchronous serial interface (SSI)
• Data rate: max. 40 kS/s
• 24-bit A/D converter per channel for synchronous, parallel measurements
• Supply voltage for active transducers (DC): 5 to 24 V
• Digital low pass filter: Bessel, Butterworth
• TEDS support
• 1 × Ethernet port with PTP support
• 2 × FireWire ports
• Factory calibration data in accordance with DIN/ISO 10012 saved on the device (generate certificate using MX Assistant)

See the MX840B datasheet for a full list of features and specifications.

High‑performance measurement technology

The MX840B captures high‑resolution, synchronized measurement data across all channels using a 24‑bit converter paired with flexible sample rates up to 40 kS/s. Each channel automatically detects the connected sensor via TEDS, configures itself, and applies the appropriate filtering and scaling.

Typical applications

The MX840B is the ideal choice for fast‑changing or complex measurement tasks across industries:

• Component and system test stands
• Mobile data acquisition in vehicles or machinery
• Service and field diagnostics
• Monitoring of mechanical, electrical, and thermal parameters
• R&D and multi‑sensor experiments requiring rapid setup and high accuracy

True ‘plug & measure’ capability

With galvanic isolation and patented internal calibration, the MX840B ensures stable, low‑noise measurements across a broad range of sensor types – making it a versatile, plug‑and‑measure solution for precise, reliable data acquisition in any test environment.

As part of the flexible QuantumX modular data acquisition platform, a MX840B system scales quickly and easily into a distributed system with synchronized measurements provided by FireWire and Ethernet PTPv2 support.

When you add in catman^® software for data recording and data analysis, you achieve a true plug‑and‑measure setup where torque, force, pressure data can be immediately visualized, stored or digitally forwarded.

Multiple options in the same family

MX840 can be purchased either stand-alone or as part of a software/hardware bundle:

• Basic data acquisition and visualization: MX840B + catmanEasy
• Data acquisition, data visualization, analysis and report generation: MX840B + catmanAP

For an 4-channel version, try the MX440B Universal Amplifier.

Stay connected with the latest firmware and software

All QuantumX modules are delivered with the latest firmware. For existing modules, it is easy to update the firmware by simply downloading the latest firmware package.

HBK also provides both native and third-party software packages and drivers allowing you to fully leverage the QuantumX ‘open’ data acquisition infrastructure for integration with a great number of operating, analysis and automation software. This includes:

• MX Assistant: a modern and free device or system assistant that supports all module functions
• catmanEasy / AP / Enterprise: The standard DAQ software used with the QuantumX platform
• Third-party drivers: For example, LabVIEW™, Visual Studio^® .NET and CANape^®

Go to our download site for more information and a complete list of options.

Did you know? You can also connect Tescia data acquisition software to your QuantumX module via the MX Assistant utility. Talk to one of our experts to find out more.