# LabOne Highlights

With every new release of LabOne®, a range of additional functionalities expands your instrument's capabilities while maintaining the quality standards associated with Zurich Instruments. This page summarizes some of LabOne's most significant features.

## LabOne 20.01

In addition to substantial stability improvements, performance enhancement, as well as hardware- and firmware-specific features, LabOne 20.01 offers new software and signal processing tools aimed at providing a better user experience.

### Linear Fit

It happens frequently that a noisy signal has a linear trend and you are interested to extract the slope and intercept of the trend out of the fluctuations. For instance, you may increase the intensity of light shining on a photodiode and measure its generated current to obtain its responsivity, given by the slope of the current as a function of power in the small-signal regime. Another example is that of a frequency component hidden in your signal, where the frequency is deduced from the slope of the measured phase versus time. In LabOne 20.01, the Sweeper and DAQ tabs are equipped with a linear fitting tool that computes the slope, intercept and quality of linearity (given by the coefficient of determination R2) as shown to the left.

### Noise modeling

Did you know that the statistical behavior of the signal amplitude R is captured by a Rice distribution, whereas the quadrature components X and Y follow a Gaussian (normal) distribution when the correct measurement is carried out? In LabOne 20.01, the measured histogram is fitted to the expected model to compare the outcome of your measurement with an ideal scenario. The real-time calculated parameters, especially the fitting error coefficient, indicate how well the instrument's settings (such as the filter time-constant) are adjusted. The measured histogram can also be saved as shown to the right.

### Complex plane

In superconducting quantum computing, the state of measured qubits is often represented in the complex plane: the real axis shows the in-phase component I, whereas the imaginary axis displays the quadrature component Q of the readout signals. As shown to the left, LabOne 20.01 can visualize complex data on the I/Q plane and carry out rotation, translation and dilation operations on the measured points to provide better visibility and facilitate complex thresholding.

## Waterfall Display and Triggered Spectrum Analysis

The LabOne Spectrum Analyzer is a powerful tool to analyze measurement signals in the frequency domain, helping in the measurement of sidebands, in quantifying multiple signal components, or in characterizing various noise sources. You can zoom into sub-Hertz features even on signals in the hundreds of MHz.

This widely applicable tool notably features a waterfall display or spectrogram, facilitating the analysis of spectra that evolve over time. In addition, it is possible to perform triggered acquisitions of multiple spectra with precise timing and display the results as 2-dimensional color plots. The triggered data acquisition is provided by the LabOne Data Acquisition (DAQ) tool, which was originally reworked from a previous module called Software Trigger.

These features are of great relevance to measurements of transient phenomena such as free induction decay (FID) in NMR spectroscopy. Triggered acquisition is particularly useful on the UHFLI with the UHF-AWG Arbitrary Waveform Generator option installed. Such a system combines pulse generation, synchronized acquisition, and powerful software for time- and frequency-domain analysis, making it the perfect tool for pulsed measurements.

## Q-factor Extraction from Sweeper Data

In applications such as MEMS, AFM, gyroscopes, sensors, etc., the Q-factor of resonators is required to establish a closed-loop control system such as a PLL following the resonance track of a tuning fork. Moreover, the Q-factor determines the damping characteristics of oscillators such as lasers and clock generators. Therefore, it is essential to extract the resonator Q-factor rapidly and accurately from its measured frequency response. The Sweeper module in LabOne offers a mathematical tool for Q-factor extraction. By measuring the frequency response of a resonator, it is possible to set the cursors around the peak and add the resonance parameters in the Math tab. As depicted in the figure, the tool fits the measured curve (solid line) to a Lorentzian model (dashed line) and extracts the resonator parameters including the quality factor, resonance frequency, 3-dB, or FWHM bandwidth for both amplitude and phase independently.

## Impedance User Interface and Functionality

LabOne features a versatile Impedance Analyzer tab for both the MFIA and the MFLI with the MF-IA option. The new tab gives fast access to all key set-up parameters and keeps the other parameters neatly stored away, ready for use whenever needed. The layout consists of three sections, which remain visible when using the Sweeper or Plotter tools, enabling quick and clearly defined measurements.

### Measurement control

Obtain easy access to the test signal, test frequency, and range control (auto or manual). The application menu enables a simple selection of typical measurement frameworks, which can be modified further in the advanced mode. Notably, the Precision drop-down menu allows you to choose the balance between acquisition speed and precision.

### Equivalent circuit

Select the mode of measurement with the help of the graphical representation of the measurement circuit. The two-component equivalent circuit can be easily selected from the corresponding drop-down menu.

### Measurement results

This section displays the real-time values of key parameters without having to switch to the Numeric tab.

### Parametric Sweeper

In addition to the improved Impedance Analyzer tab, the Sweeper tool includes the ability to run Nyquist-plots (see figure). The plot can be configured freely, and the axis scales can be locked with the so-called “track” feature, which allows the Nyquist-plot to be displayed in a true 1:1 ratio.

## Multi-Device Synchronization (MDS)

Starting with LabOne release 17.06, users operating several Zurich Instruments products simultaneously can synchronize their instruments and use them through a single instance of LabOne.

Applications requiring multiple synchronized signal input and signal output channels benefit from multi-device synchronization (MDS), which provides clock synchronization and time-stamp alignment. MDS also enables you to orchestrate the entire instrument assembly through a single user interface or API session.

The following signal generation and data acquisition tools are MDS-ready:

• AWG: control the output channels of several AWG devices from a single sequencer along with sample-wise synchronization of all output waveforms.
• Sweeper: sweep a parameter on one instrument, and acquire and plot data from multiple instruments in a single figure simultaneously.
• Plotter: align and analyze the measurements performed on multiple instruments in a single Plotter window.
• Data Acquisition: trigger on any signal and acquire shots of aligned data from multiple instruments into a single image construction window.
• Continuous recording of aligned data: acquire fully synchronized lock-in, boxcar, PID, Arithmetic Unit and Scope data from multiple instruments.

## Imaging with the Data Acquisition Module

Imaging is one of the most important applications for our customers working in Scanning Probe Microscopy (SPM) and non-linear imaging (with CARS, SRS, and THz spectroscopy being prominent examples).

The imaging mode converts any of the measurement signals into images and provides:

• A clear definition of a "line", based on a starting event detected by the line trigger and a user-defined duration.
• The resampling of the recorded data samples to the required number of pixels with a suitable interpolation and/or averaging.
• To store the matrix-like data in a grid data structure, based on the number of defined lines.

All this is implemented in the LabOne Data Acquisition tool (DAQ), and is available in the user interface as well as on the APIs. With the power to stream up to a sustainable 800 kSa/s over multiple channels in a triggered fashion (depending on product category), the LabOne server architecture is strong in its data acquisition capability: even video rates (512*512 pixel/s) are well below the transfer rate limit.

## Graphical Lock-in Tab – Functional Block Diagram

By adding a functional block diagram for every demodulator to the LabOne user interface, it is possible to intuitively understand the signal processing pathways.

### File manager

For LabOne users, the File Manager brings the advantage of a quick and easy access to measurement files, settings files, and log files on the local PC. Moreover, MFLI users can manage files on the instrument's flash drive as well as on storage devices attached to one of the two USB connectors.

### Presets

The UHFLI and the MFLI can be programmed to start up in a user-defined state of operation. This is particularly interesting for applications where the same instrument configuration is always needed, and results are mainly taken out from the auxiliary outputs. Typical examples are imaging applications with analog interfacing to the main controller.

Still not convinced about updating your software? Look at the seven reasons why you should always work with the current release, and check the LabOne Compatibility page before proceeding with an installation.