HybridADC signal conditioning technology

Which ADC converter is better? SAR ADC or Delta-sigma ADC? Well, now it doesn't matter anymore. SIRIUS XHS data acquisition systems introduce Hybrid ADC signal conditioning technology. HybridADC offers the best of both worlds. It allows users to select modes of operation for each analog input channel:

1. High bandwidth mode: This mode offers an extremely high bandwidth of 5 MHz and a 15 MS/s sampling rate. SIRIUS XHS instruments can perfectly acquire impulse, step, and square signals without any ringing or overshooting. Such a mode is perfect for transient recording and applications such as power analysis. Such acquisition mode is typically found in SAR ADCs.

2. High dynamic alias-free mode: This mode operates at sampling rates of up to 2 MS/s, acquiring data with a dynamic range of up to 150 dB. It employs an alias-free filter with a bandwidth closely aligned with the Nyquist criterion, making it ideal for frequency domain analysis of signals such as sound and vibration (NVH). This performance closely mirrors that of Sigma-Delta ADCs.

By today's data acquisition standard, you would need two independent data acquisition devices for the measurements mentioned above. The SIRIUS XHS DAQ systems allow you to select the sampling rate independently per channel. This ensures that all measurements fit your current testing application. All modes are available on one device and can also work in parallel - acquiring two channels at different rates, bandwidths, and dynamic ranges completely synchronous with each other.

SIRIUS® XHS digital counter inputs

As highlighted earlier, the SIRIUS® XHS data acquisition systems boast Dewesoft's cutting-edge SUPERCOUNTER® technology across all eight counter inputs. The counter inputs are available for all SIRIUS® XHS instruments, providing users with enhanced counter/encoder input capability.

Conveniently located on the back panel of the SIRIUS® XHS instrument, the counter inputs ensure easy accessibility and seamless connection of all sorts of counter and encoder sensors via the LEMO 1B 7-pin female connectors.

The counters boast a timebase of 150 MHz, a maximum bandwidth of 15 MHz, and a 32-bit resolution. Dewesoft SUPERCOUNTER® features advanced input filtering to address glitching issues. Counter inputs are compatible with 3.3 V TTL/CMOS logic levels.

SIRIUS® XHS counter inputs support all these modes:

• Event counting

• Waveform timing

• Encoder

• Tacho

• Geartooth

Each counter channel comes with three standard inputs (A, B, Z) necessary for encoder applications. It also provides +12 V and +5 V for sensor supply, along with digital output for alarming and fast triggering.

The counter channels can also be used as a digital output. Digital outputs utilize 5 V push-pull logic with a fast triggering option. The triggers out module enables digital outputs based on custom conditions. Either from the analog input channel or digital input channel. This trigger option operates in real-time on the hardware itself. Users have the flexibility to customize the shape of the output pulse in terms of delay and duration.

The total response time can go below 500 ns, proving beneficial in time-critical applications such as emergency shutdowns or alarms.

Channel-to-channel galvanic isolation

SIRIUS DAQ devices offer high galvanic channel-to-channel and channel-to-ground isolation (±1000 V). The DAQ systems even offer isolated sensor excitation.

With such isolation, we have no problem measuring high voltage potentials and no problem with common-mode voltages. We are also safe with measurements like vibrations, temperatures, or any other measurement where non-isolated sensors are placed next to the high voltage potential against the DAQ system ground. In such cases, a non-isolated DAQ system would burn or at least give faulty wrong results. With SIRIUS it is just one thing less to worry about.

Digital isolation has another big advantage - preserving the frequency bandwidth of the amplifiers. SIRIUS provides "worry-free" measurements, less noise, no ground loops, and the best possible signal quality.

For less demanding measurement and lower-cost applications, SIRIUS DAQs are also available in a differential version where only power supply isolation is offered.

Great connectivity with open and standard data protocols

SIRIUS® XHS has two ways of transmitting the data to the PC:

• Ethernet interface (GLAN): perfect for distributed data acquisition.

• USB 3.0 (Type C connector): perfect for very high-speed data acquisition.

SIRIUS® XHS acquires data with a very low load on the computer's CPU. It uses a​​​​​​​ DMA transfer on the system level to reduce loads.

In today’s world of open toolchains and intercommunication, devices should be compliant with standard protocols. SIRIUS® XHS can serve acquired data via these protocols, all in parallel to storing data on a PC running DewesoftX software.

• OPC UA: This is the industry standard and is a perfect framework where the devices can be integrated into any system, including SCADA, MES, ERP, and others.

• XCP: XCP is a very widely used protocol in the automotive industry for data exchange. In modern vehicles, the required data bandwidth is higher than ever. 1 GBIT XCP interface allows data transfers with as high as 1 Ms/s.

• CAN and CAN FD: Vehicle bus systems can be read through the included CAN FD interface. At the same time, SIRIUS XHS allows the measured data to be transmitted in the CAN FD format.

Compatible with various current sensors

Correct current transducers are essential for electrical measurements. Our power analyzers are compatible with a wide range of different current sensors. We are offering different current sensor types that match perfectly with our power analyzers:

• DC-CT® current transducers

• Zero-Flux transducers

• Iron-core current transformers

• Hall-compensated current clamps

• Fluxgate current clamps

• Rogowsky coil current probes

• Shunts

All our current sensors feature TEDS and can be powered directly from our power analyzers. For more information refer to:

• DC-CT® current transducer product page

• Current sensors product page

Various wiring configurations with simple and intuitive setup

The DewesoftX data acquisition software offers a visual selection of different wiring schematics and provides power calculations for all possible connections.

Predefined Power Schematics:

• Direct Current

• Single-Phase

• Two-Phase

• Star Connection

• Delta Connection

• V Connection

• Aron Connection

• Combined Star/Delta Connection

These connections can be measured with or without currents. Thanks to the modular construction of our measurement devices and the multiple synchronized power modules in our software, Dewesoft can also analyze 6, 7, 9, or 12-phase motors.

To learn more about each connection, please look at the Dewesoft Power Analysis free online training or the Dewesoft Power Manual.

Electrical power calculations

DewesoftX data acquisition software automatically records raw voltage and current data while simultaneously calculating and storing all power parameters, including:

• Active Power (P), Reactive Power (Q), Apparent Power (S), Distortion Power (D)

• Cos φ, Power Factor

• P, Q, Cos φ for each harmonic

Multiple power system calculations

Dewesoft power analyzers can measure multiple power systems simultaneously. For example, the Dewesoft R8D power analyzer can synchronously measure up to eight 3-phase systems. Dewesoft supports power analysis across various frequencies, including DC, 50 Hz, and variable frequencies, while accommodating all wiring configurations, such as single-phase, 2-phase, 3-phase star, 3-phase delta, 3-phase Aron, and 3-phase V, ensuring versatile and precise measurements for any application.

Mechanical parameters measurement

Dewesoft power analyzers can also measure mechanical values like torque, speed, noise, temperature, and vibration in complete synchronization. This allows you to perform also thermal, NVH and efficiency calculations in parallel to electrical power.

Accurate frequency calculation

A single Dewesoft power analyzer and data acquisition system can measure multiple power modules simultaneously, each with an independent frequency. Supported line frequencies include:

• 16.7 Hz: Railway Sector

• 25 Hz: Public Grid

• 50 Hz: Public Grid

• 60 Hz: Public Grid

• 400 and 800 Hz: Aerospace

• Variable Frequency: E.g., power inverters

Period values calculation

Our power analyzers also calculate period values of voltage and current, power components, power factor, and symmetrical components. Users can define cycle calculations and the overlap percentage.

Star-delta connection calculation

The system can calculate all values and waveforms for star connections from a delta connection and vice versa, displaying waveforms for U1, U2, U3 ↔ U12, U23, U31.

Easy power quality analysis

DewesoftX Harmonic FFT software feature enables the visualization of harmonics in:

• voltage,

• current,

• active and reactive power,

• line voltage,

all fully synchronized to the fundamental frequency.

Power quality standards

Our power analyzer supports a wide range of power quality standards, including:

• Voltage and Current Flicker

• THD, THC, TDD, TDC, TDR

• Interharmonics, Full and Half-Sidebands

• Rapid Voltage Changes (RVC)

These measurements and analyses ensure compliance with multiple industry standards, making it easier to maintain optimal power quality.

Rich visualization

After setting up the power module, you can configure and customize the measurement screen. The most relevant display widgets for electrical power analysis and power quality include the following display widgets:

• Digital Meters: Display various instantaneous values calculated by the power module with unit support. Learn more.

• Recorder and X/Y Recorder: The Dewesoft power analyzer provides visual recorder displays for time-domain data, showing all parameters in individual intervals. The X/Y recorder can generate orbital plots online. Learn more about Recorder and X/Y recorder.

• Scope: Shows waveforms of voltages and currents, including line-to-line (U12, U23, U31) and line-to-earth (U1, U2, U3) voltages. Learn more.

• Vector-Scope: Visualizes the relationships between voltages and currents for up to 3-phase systems. Multiple vectorscopes and individual harmonics can be displayed simultaneously. The "transparent" function allows for direct comparisons of phasors. Learn more.

• Harmonic FFT: Offers a simple and comprehensive analysis of harmonics for voltage, current, power, and reactive power, all synchronized to the fundamental frequency of the signal. Learn more.

• Contour plot: A 2D graphical representation that uses contours or color-coded regions to display 3D data. This visualization technique helps to reveal patterns and relationships in complex datasets, such as efficiency maps for motors, making it easier to understand and analyze the information. Learn more.