• CS350 Potentiostat / Galvanostat (electrochemical workstation) contains a fast digital function generator, high-speed data acquisition circuitry, a potentiostat and a galvanostat. With high performance in stability and accuracy with advanced hardware and well-functioned software, it is a comprehensive research platform for corrosion, batteries, electrochemical analysis, sensor, life science and environmental chemistry etc.

    Corrosion mechanism of metals in water, concrete and soil, etc.
    Batteries (Li-ion battery, solar cell, fuel cell, super capacitors), new materials, photoelectronic materials;
    Electrochemical analysis and sensor;
    Reaction mechanism of electrosynthesis, electrodeposition (electroplating), anodic oxidation, etc.
    Fast evaluation of corrosion inhibitor, water stabilizer, coating and cathodic protection.
    Dual-channel high-speed 16bit/high-accuracy 24bit AD converter;
    Built-in frequency response analyzer(FRA), frequency range: 10μHz~1MHz;
    Built in high-power Potentiostat/Galvanostat/Zero resistance ammeter(ZRA);
    Voltage control range: ±10V; Compliance voltage: ±21V ;
    Current control range: ±2A ;
    Potential resolution: 10μV; current resolution 10pA .


        CorrTest® software provides users a versatile smoothing/differential/ integration kit, which can complete the calculation of peak height, peak area and peak potential of CV curves.
        CorrTest® kit also provide powerful non-linear fitting on Butler-Volmer equation of polarization curve. It can calculate Tafel slope, corrosion current density, limitation current, polarization resistance, corrosion rate. It can also calculate the power spectrum density, noise resistance and noise spectrum resistance based on the electrochemical noise measurements.
        CorrTest® kit has a built-in versatile timing policy for combined measurements, which can facilitate the automation of experiments and save time. 




    Impedance (EIS)

        CS workstation applies dual-channel sampling technique, and has strong ability of anti-interference. It is particularly suitable for AC impedance measurement of high resistance system (>109Ω, such as coating, concrete etc.). It can also be used to plot Mott-Schottky curve and differential capacitance curve. The software can achieve real-time display of OCP.


    EIS of AA6063 Al alloy in Ce3+ containing 3% NaCl solution(left)  
    Polarization curve of Ti-based amorphous alloy&stainless steel in 3%NaCl solution(right)

    Polarization curve

        It can measure linear polarization curve and Tafel curve. The user can set the anodic reversing current (passivation film breakdown current) of the cyclic polarization curve, in order to determine material’s pitting potential and protection potential, and evaluate the susceptibility to inter-granular corrosion. The software uses non-linear fitting algorithm to analyze polarization curve, and can make fast evaluation for materials’ anti-corrosion ability and corrosion inhibitor’s performance.


        It can do the following electro-analysis methods: Linear Sweep Voltammetry (LSV), Cyclic Voltammetry (CV), Staircase Cyclic Voltammetry (SCV), Square wave voltammetry (SWV), Differential Pulse Voltammetry (DPV), AC voltammetry (ACV), Stripping voltammetry etc. It can also calculate the integrated peak area, peak current and analyze standard curve.


      CV curve of Pt electrode in 3 mmol/L K4[Fe(CN)6]+ 0.4 mol/L KCl(100mV/s) (left)    
      CV curves in three-electrode cell of PPy in 0.5 mol/L H2SO4 (50 mV/s)(right)

    Electrochemical Noise

      With high-resistance follower and zero-resistance ammeter, it measures the spontaneous fluctuation of potential/current in corrosion system. It can be used to study local corrosions such as pitting, galvanic corrosion, crevice corrosion, and stress corrosion cracking. Through noise spectrum, it can evaluate the cause, grow and death of some metastable pitting and cracking. Based on calculation of noise resistance and pitting index, it can do local corrosion monitoring.
      The right picture shows: Electrochemical noise of low-carbon steel in 0.05mol/L Cl-+0.1mol/L NaHCO3

    Power expansion 
        For CS workstation, the current control range is ±2.0A, and compliance voltage is ±21V. It can meet needs of the following fields: charge and discharge of fuel battery and high-power battery, electrolysis and electrodeposition etc. Using special power expander, the maximum current output can be up to ±5A, and compliance voltage is expandable to ±200V.

    Full floating measurement
        CS workstation uses full-floating working electrode. It can be used in autoclave electrochemical test (autoclave body is grounded), on-line corrosion study of metallic components in the earth (bridge, concrete steel, etc.)

    User-defined methods
        The user can set timing measurements to circularly proceed a certain test method or multiple methods. It’s suitable for unattended auto timing measurements.noi















Digital audio analyzer and tester

Accurate measurements with traceable calibration

dScope Series III is a professional, industrial grade audio analyzer with calibration traceable to international standards. Standardised measurements are easy to achieve, and some such as AES17 and Dolby Digital tests are provided as standard with menu driven automation to make the measurements for you. dScope provides standard FFT window function s such as Hann and Blackman-Harris as well as software-optimised Prism Sound Window functions which provide the best performance in the industry. Continuous FFTs may be performed at up to 256k point resolution (1m point on soundcards) using 80-bit floating point precision. Measurement accuracy, especially of small residual s in the presence of large signals, is uniquely maintained. 

During calibration, dScope Series III requires no hardware adjustments: the entire calibration task is performed in software, and calibration coefficients are stored in non-volatile memories on their respective modules. Calibrations are therefore less prone to wandering than those made with mechanical trimmers, and modules can be interchanged without re-calibration. To ensure traceability, calibration is performed by Prism Sound authorised distributors using suitably-qualified references. 

Simultaneous measurements providing lower test times

The dScope signal generator has two independent channels, and generates in the analogue, digital and soundcard domains simultaneously. As well as standard waveforms, the generator can source arbitrary waveforms (from wavetable s, WAV files or VBScript s) and synchronous multi-tones. In the signal analyzer, two-channel level, frequency and phase measurements are continuously available from either domain, as well as a two-channel continuous-time measurement function and up to 40 two-channel FFT-derived measurements.

Digital carrier degradation and analysis capabilities include jitter, carrier amplitude, rise/fall times, sampling-rate deviation and auxiliary data (channel status, validity etc.). 

Graphical traces types include 'scope, FFT, sweep, analyzer residual and FFT of analyzer residual (all for both channels simultaneously) plus carrier eye diagram. Sweeps can be made of up to four parameters simultaneously (including carrier parameters). 

Competitive audio analysis systems are often 'modal': they are set up to perform a single measurement function - and that's all they can do until their 'mode' is changed. This is a consequence of their hardware based architecture and cannot easily be remedied. dScope Series III, on the other hand, comprises many independent "soft" instruments which can be used simultaneously. 

For example you could SIMULTANEOUSLY: 

Measure the amplitude, frequency, and inter-channel phase at the output of a stereo 'EUT
Measure THD+N on both channels with control over measurement bandwidth and weighting
Record up to 40 complex FFT-derived stereo results (e.g. HF & LF roll-off, cross-talk etc.) 
Display a stereo 'scope and FFT trace (and maybe save them to a central network location) 
Characterise the EUT's S/PDIF digital I/O (e.g. Eye pattern jitter performance) 

dScope's 'concurrency' is very powerful in production-line applications, where it allows test times to be slashed. Its ability to display these parameters at once is also very useful in development and research as it allows dependencies and trends of different parameters to be easily observed from one user interface, (including the ability to view a 'scope trace and bar-graphs without an external oscilloscope or meter).

dScope Series III delivers the versatility and precision needed for testing the latest audio technology. Whether your application is digital, analogue or soundcard, consumer or professional, broadcast, multimedia, CD, DVD, computer audio, transducer testing, digital telephony or communications, dScope provides the perfect audio test solution for all types of operation: It is comprehensive and accurate for R&D, portable and intuitive for maintenance and field service, and fast, automatic and IT-friendly for the production line. 

The dScope audio analyzer covers the whole range of traditional audio measurements, including:

• Amplitude 
• Phase 
• Balance 
• Cross-talk
• SNR and weighted noise 
• Power
• Frequency
• Gain 
• Frequency response 
• THD+N vs frequency

In addition, the dScope Audio Analyzer incorporates important new features needed to work with the latest audio technologies. These include digital interface test tools such as carrier waveform and eye-pattern display, jitter measurement and AES3/IEC60958 channel status generation and analysis. Sample rate support is not only for the standard sampling rates like such as 44.1kHz and 48kHz but includes sample rates up to 192kHz. The dScope audio analyzer has comprehensive FFT analysis features, and a uniquely simple, state-of-the-art synchronous multi-tone capability which can measure dozens of parameters simultaneously. All this is provided without any costly optional extras, providing market-leading functionality at a remarkably affordable price. 

Applications include:   In:
• Professional audio 
• Broadcast 
• Internet audio 
• Multimedia
• Consumer products 
• Sound reinforcement 
• Telephony 
• Communications
• Research & development
• Production test 
• Field service 
• Maintenance

Multi-tone testing for high speed manufacturing applications.

One of the key drivers in production test is to reduce test times, enabling an increase in throughput, a reduction in cost per unit, and increased profits. This is particularly the case in high volume audio production tests, where the test equipment is required to test at high speed and at low cost. Multi-tone testing is one way in which the dScope Audio Analyzer meets these needs. A number of individual tones are generated simultaneously and analysed using FFT analysis, enabling tests to be carried out at all frequencies simultaneously. The result is a massive reduction in test times. Read more about Multi-tone measurements here

Quasi-anechoic transducer testing

dScope Series III implements a couple of different methods of measuring acoustic transducers without the effects of reflections from the surrounding environment. Both rely on deriving an impulse response from time domain data in a similar way to traditional MLS methods, but dScope doesn't actually use MLS. Instead it uses either a log swept sine / chirp, or a "bin-centres" multi-tone. The former is particularly powerful as it allows not only the measurement of the frequency response of a device, but the frequency components of the individual distortion harmonics. The "bin centres" signal is a special case of multi-tone signal that has tones at the FFT bin centre frequencies. It can be pink weighted and has some useful properties when it comes to measuring over a limited range of frequencies as the analysis algorithm can remove unwanted frequencies from the calculations, keeping the noise under control. For more information, see the impulse response application note.

Compatible with Industry standard software tools

The dScope Series III audio analyzer software exposes a very large set of ActiveX controls to allow it to be controlled from third party software. Almost anything you can do on the dScope can be controlled from external applications. These applications include most software development tools such as C++, VB etc. and test systems such as LabVIEW and TestStand.

For those needing to include professional, high quality audio testing in their manufacturing test systems, the dScope audio analyzer is ideal. It can be controlled and read directly from TestStand via the standard ActiveX adapter provided within the TestStand environment, making it quick and easy to integrate the into any ATE or production test system. 

Built in automation and programmable functions

The dScope Series III is highly programmable using standard Microsoft VBScript or JScript. This capability is built in, including an editor to write your own scripts. Almost everything that can be done on the dScope through the user interface can be automated and controlled. You can: 

• Load and save configurations (a snap-shot of the entire dScope set-up)
• Manipulate configurations to change dScope settings
• Create test sequences with logic to control flow or give pass/fail
• Create User controls such as check-boxes, sliders etc.
• Retrieve, format and display or save results
• Export results in a wide range of formats: txt, html etc.
• Export or print graphs
• Link into other software such as Excel, or Word to read or write results
• Control third party software and hardware using ActiveX controls
• Access audio data and the FFT data buffer directly for custom analysis

VBScript is easy to learn and very powerful. Because it is not compiled, all the scripts provided with the dScope audio analyzer can be opened in a text editor and inspected or manipulated. 

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Water iT 

New product

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XL2 with M4260 Measurement Microphone

XL2 + M2230

XL2 Audio and Acoustic Analyzer
with M2230 Measurement Microphone
(Class 1 certified).
NTi Audio #: 600 000 355

XL2 + M2211

XL2 Audio and Acoustic Analyzer
with M2211 Measurement Microphone
(Class 1 frequency response).
NTi Audio #: 600 000 351

XL2 + M4260

XL2 Audio and Acoustic Analyzer with M4260 Measurement Microphone, Class 2.
NTi Audio #: 600 000 340

XL2 Audio and Acoustic Analyzer

XL2 without measurement microphone.
NTi Audio #: 600 000 330

Read More