LMS speaker tester is introduced from 25 years up to now, many speakers around the world to develop and manufacture widely used in the r&d and production quality control, the traditional LMS speaker tester adopts ISA card provided, so is facing more and more parts out of date, so in order to solve these problems thoroughly, 25 years later new USES USB architecture model and LMS - V new product COM architectural patterns. Lms-v system hardware: LMS consists of low distortion sinusoidal oscillator, bistable adjustable tracking filter, microphone preamplifier, gated peak/average level detection circuit. Contains a set of line level output, balance line input and active microphone input. One of the four methods can be used for measurement. The external microphone preprocessor can be used for level calibration. The test frequency range is from 12Hz to allow up to 200 logical spatial frequency data points, which is equivalent to one data point for each pixel on the screen. Dual tracer filter can be used to measure flat, low pass, high pass, band pass and band stop responses. Measuring accuracy and flexibility are comparable to those of other expensive systems, making it easier for both novice and experienced users to set up and operate the lms-v, which covers all the features and functions of previous LMS versions of hardware and software, and extends new features:

> high performance, high precision, full analog signal frequency domain test, range of 10hz-100khz

> high performance optional multiplicative DAC architecture

> is suitable for RMS truth measurement for high precision noise and signal testing

> anti-noise phase truth measurement can continuously measure 360 degrees

> low error edited sinusoidal signal, accuracy of 0.001%, 10hz-100khz

> accurate noise generator, flat PINK filter (0.05dB), 10Hz-40kHz

>8- pole editable filter combinations are available for low - pass, high - pass, and bandpass applications

> filter combinations can be inserted into the output path for bandwidth-limited noise generation

> universal 4-pass limited bandwidth filter: 10Hz, 20Hz, 22.4hz, 400Hz

> extends 4 low pass limited bandwidth filters: 20KHz, 22.4KHz, 30KHz, 80KHz

> extends weight filter: ansi-a, ansi-b, ansi-c, ansi-d, itu-r-arm, itu-r-468

>140DB dynamic range, minimum: -120db, maximum: +20DBM

USB interface, WINDOWS compatible software

Single test multiple curves, multiple measurements

Open GL 3D graphics are used to display polar 3D data

New software and QC macro features, support for LT360 turntable

DB25M digital output signal for control relay, servo system, etc

Built-in storage of all calibration data and traceable lms-v system software: eight measurement modes: voltage, SPL, impedance, RT60, inductance, capacitance, pole voltage, pole diagram. All hardware functions of LMS can be controlled and modified through the analyzer parameters dialog box, and can also be saved on disk as a quick Settings file for future invocation of control panel parameters. Sweep at any frequency from 10Hz to 100KHz, scanning point accuracy is optional from 2 to 800 points. LMS provides a wealth of utilities for data and graphics processing. Numeric data can be input and output from programs AS simple AS CII text files. Graphics can be output as vector or bitmap image files in many different formats, including BMP, GIF, PCX, PNG, EPS, AI, PDF, WMF, EMR. The powerful Curve Capture tool can extract numerical Curve data from lattice images. These can be images from a book, a brochure, or a scanner. The Curve Capture tool enables you to use diagrams

Create your own curves or edit any data in the library. All graphics are designed in a wysiwyg way on a drawing board. The screen displays the same as the print output. The user has full control over a variety of design elements, including font, color, and line type. The system also provides custom graphics files for entering project names, people, and company names, along with comment and note areas. Use any standard Windows printer, driver, can support high resolution panchromatic printing. LMS software can be controlled by macro programs written by users. The LMS macro programming language can be used to write screen prompts for operators, control test scans, run software tools, control graphic printing, output data, and perform qualified/unqualified tests. The processing menu provides mathematical operations, data processing, and other specialized curve processing capabilities that can be applied to measurements or other input data. Filtering, calibration, splicing, phase generation, and mathematical operations allow the user complete control over the measured data without the need for external data processing programs. The system has the following features: 2. Accurate data post-processing and management 3. Base frequency range from 10HZ to 100KHZ 4. Accuracy and flexibility can be rivalled with high price system 7, set up and operate than other systems simple support any kind of brand printers. Curve library can save 99 curve compared with average. Curve analysis can be directly transmitted to LEAP - 5. Copy/paste transfer more curve. Accurate speaker parameters is derived. Yang expertise parameter simulation. Powerful chart export function. The manual frequency scanning. The scanning accuracy up to 800 points. The test macro editor. The microphone parameter file editor  created. Any modification of the curve color, background, thickness, Easy to overlap, print and compare. Edit, create and modify curves. Super post processing and directivity polar graph display lms-v USB speaker tester additional functions include: * increase the level of 20 db gain greater dynamic range and lower signal-to-noise ratio * built-in test pa * V&I in addition to the current (voltage) measuring real impedance functions (i.e., the original XI - BOX) * 100 ma current source using 9 v power supply of the LVP interface, support the M50 microphone with LP201 accelerometer output signal * * improved smoother oscillator improved and faster scanning speed measurement * * new improved external overvoltage protection circuit TTL I/O control, Triple curve measurement, line input and microphone input * additional macro functions, including support for multiple LT360 turntable drivers

Power requirements: 12VDC/1A, general 100-260vac adapter iec-320c8, Car +12V, Battery +12V

Control box: length 23CMX width 11.5cm x height 4.5cm net weight 0.75kg