RTA-168A: PC Real Time Audio Spectrum Analyzer,Sound Level Meter,Polarity Tester

VT RTA-168A-----PC BasedReal Time Audio / Acoustic Spectrum Analyzer, Sound Level Meter, Distortion Analyzer, Polarity Tester

with a USB hardkey (dongle) activated Multi-Instrument (Standard) SoftwareLicense

VT RTA-168A is a precision PC based real time audio / acoustic spectrum analyzer, sound level meter, distortion analyzer, polarity tester... All its components can be packed into the small black soft pouch case provided and be carried together with your laptop or tablet. It is an indispensable tool for audio / acoustic measurements in both field and laboratory. Application examples are frequency response measurement, distortion measurement and polarity testof a loud speaker, room/car equalization, noise monitoring and analyzing, etc. Combined with the computing power of a modern PC and the powerful virtual instrument software \"Multi-Instrument\", VT RTA-168A provides an unbeatable performance-to-price ratio compared with any other types of RTA. Furthermore, the Multi-Instrument software upgradefor the same license level is FREE for life.

The software can be downloaded from virtins.com for a 21-day fully functional FREE trial using your sound card as the ADC and DAC device.

1. Package Contents

(1) Measurement microphone: ECM999 and its accessories (a windshield, a microphone clip and a small microphone stand)

(2) XLR-to-USB Converter

(3) USB cable (1.5 m)

(4) CD (contains the copy-protected Multi-Instrument Software)

(5) USB hardkey (contains a Multi-Instrument Standard License)

(6) Audio Test WAV files (contains a list of audio test tones and noises, downloadable from virtins.com/VT-RTA-168.shtml)

(7) 1/8” TRS cable (1.8m)

(8) Black Soft Pouch Case

(9) Unique Sound Level Calibration Data (in CD)

2. Specifications

(1) Overall VT RTA-168 Specifications

Frequency Range20Hz ~ 20kHzSampling Rate44.1kHz / 48kHzBit Depth16 BitsNumber of Input Channels1Frequency Accuracy0.01%Frequency WeightingFlat, A, B, C, ITU-R 468Time WeightingLinear, Exponential
(Equivalent Continuous Sound Level (Leq) fully complies with IEC61672)Sound Level Measurement Range35dB ~ 125dB (typical), adjustable through both the hardware gain switch and software gain slider. Recalibration is not required after the gain setting changes.Sound Level Measurement Accuracy± 0.3 dB at 94dB, 1kHz after calibrationSound Level CalibrationCalibrated using Type 1 Sound Level CalibratorOctave Analysis1/1, 1/3, 1/6, 1/12, 1/24, 1/48, 1/96
(Complies with IEC61260)Other FunctionsTHD, THD+N, SINAD, SNR, SMPTE IMD, DIN IMD, CCIF2 IMD, Frequency Response, etc.
Much more functions are described in the software manual.System RequirementsWindows XP/VISTA/7/8/8.1/10/11, 32 bit or 64 bit. Minimum Screen Resolution: 1024 × 600

(2) Measurement Microphone ECM999 Specifications

Transducer TypeBack Electret CondenserElementPressure, FET PreamplifierPolar PatternOmni-directionalFrequency Response20Hz ~ 20kHzOpen Circuit Sensitivity (at 1kHz)14mV/Pa (-37dBV/Pa)Rated Impedance200ΩMinimum Load Impedance3000ΩEquivalent Noise Level (A-weighted)22dBMax. SPL (1kΩ load)132dB (THD<1%, 1kHz)Dynamic Range (1kΩ load)106dBPin PolarityPin 2 outputs positive voltage (with reference to Pin 3) when diaphragm receives positive pressure. (Diaphragm moving inward)Connector3 pin male XLRFinishRugged Metal Construction, Solemn black finishWeight150gSignal-to-Noise Ratio70dBPower Supply9~52V PhantomDimensionsΦ21.0 × 193.0 mmEnvironmental ConditionsTemperature: -10°C ~ +50°C; Relative Humidity: 0~95%RoHSCompliance

(3) XLR-to-USB Converter Specifications

Frequency Response

20Hz ~ 20kHz: -0.2dB / -0.1dB

-3dB: 6Hz ~ 23500Hz

Sampling Rate

44.1kHz / 48kHz

Bit Depth

16 Bit

Number of Input Channel

1

THD (1kHz, -1.9dBFS)

0.0062%

THD+N (1kHz, -1.9dBFS)

0.013%

SMPTE IMD (-1.9dBFS)

0.02%

DIN IMD (-1.9dBFS)

0.02%

IMD at 1kHz (19kHz and 20kHz, -1.9dBFS)

0.002%

Dynamic Range (hardware gain switch at LO)

78.4 dB

Supplies 48V phantom power for condenser microphones

No special drivers required

Fully balanced low noise analog front end

3-position analog gain control

Compact travel size F22 mm x 144 mm long

3. Introduction of Multi-Instrument(Standard)

For a sound card based system, software triggering is supported. It features a specially designed data acquisition approach, which is able to monitor the input signal continuously without missing any trigger event before a frame of data is collected. It has a very fast screen refresh rate (typically greater than 50 frames per second). It supports sophisticated triggering method including pre-trigger and post-trigger. Both level trigger and differential trigger are supported. For anon sound card based system, the triggering capability depends on thehardware used. Hardware triggering issupported if thehardware used supports it.Software triggering issupported if the hardware used supports data streaming.

The softwarehas amultilingual user interface, including English, French, German, Italian, Spanish, Portuguese, Russian, Simplified Chinese, Traditional Chinese, Japanese, and Korean. It has been widely used in education, scientific research, audio engineering, electronic engineering, medical diagnosis, vibration analysis, etc.

The software can be downloaded from virtins.com for a 21-dayfully functional FREE trial using your sound card as the ADC and DAC device.

4. Functions of Multi-Instrument(Standard Version)

A comprehensive range of functions are provided in Multi-Instrument (Standard), including:

(1) Oscilloscope

Oscilloscope Mode: dual-trace waveform, waveform addition, subtraction and multiplication, Lissajous Pattern, transient signal recording, voltmeter. AM, FM, PM Demodulation. Linear and exponential average...

Record Mode: Record data to the hard disk continuously until the recording process is stopped manually or 2 gigabytes of data has been recorded, whichever isearlier. During the recording process, acquired data will still be analyzed and displayed to keep the screen updated in real time.

Roll Mode: Data displayed in the Oscilloscope will shift left graduallywhile thenewly acquireddataare added from the right.

(2) Spectrum Analyzer

RMS amplitude spectrum, relative amplitude spectrum, octave analysis (1/1,1/3,1/6,1/12,1/24, 1/48, 1/96), frequency compensation, frequency weighting (A,B,C,ITU-R 468),moving average smoothing, peak hold, linear average, exponential average, measurement of THD, THD+N, SNR, SINAD, Noise Level, IMD, Bandwidth, Crosstalk,Harmonics, Peaks, andEnergy in user defined frequency bands,phase spectrum, auto correlation function, cross correlation function...

(3) Signal Generator

Function generation, multitone generation, arbitrary waveform generation, burst tone generation, MLS generation, DTMF generation, musical scale generation, white noise and pink noise generation, and frequency/amplitude sweep signal generation. FadeIn / Fade Out of theoutput signal.AM, FM, PM modulation...

(4) Multimeter

RMS, dBV, dBu, dBSPL, dB(A), dB(B), dB(C), Frequency Counter, RPM, Counter, Duty Cycle, Frequency/Voltage Conversion, Cycle RMS, Cycle Mean. The latterseven modes involves a pulse counting process, with the counter trigger level, hysteresis, frequency dividing ratioadjustable.

5. License information and Function Allocation in Multi-Instrument Series

The full package of Multi-Instrumenthassix levels and six add-on modules/functions.

Thesix levels are: Sound Card Oscilloscope (listed price US$39.95),Sound Card Spectrum Analyzer (listed price US$59.95), Sound Card Signal Generator (listed price US$39.95), Multi-Instrument Lite (listed price US$79.95), Multi-Instrument Standard (listed price US$129.95), Multi-Instrument Pro (listed price US$229.95).

The six add-on modules/functions are: Spectrum 3D Plot (listed price US$99.95), Data Logger (listed price US$99.95), LCR Meter (listed price US$99.95), Device Test Plan (listed price US$99.95), Vibrometer (listed price US$99.95), Dedicated Hardware Support (listed price US$99.95).

Note: The itemherecontains one USB hardkey activatedlicense of Multi-Instrument (Standard) without any add-on modules/functions. No softkey (activation code) is provided. The software will run under the licensed mode as long as the USB hardkey (dongle) is connected to your computer before you launch the Multi-Instrument software.

Please refer to virtins.com/multi-instrument.shtml for the function allocation matrix for the six levels of Multi-Instrument.

6. Software Upgrade Policy

Software upgradefor the same level is always FREE. When a new version is available, you can just uninstall your current version, download and re-install the new version, as long as the USB hard keyis still supported by the new version.

Software upgrade to a higher level can be purchased from virtins.com.Thesoftware license activated by theUSB hardkey is remotely upgradable.

7. Shipping

We ship worldwide.

The item will be shipped viaexpress mail service within 24 hours after the payment is received. It will take normally about5~8 days todeliver toyou (e.g. USA, UK, Australia, Canada, Hong Kong, Taiwan, Japan, Korea...). In some specially cases, or special places (e.g. Italy), it may takea little longer time. The shipping and handling charge is fixed at US$30 for all places. Tracking information online will be provided 2 days after shipping. You MUST provide us your telephone number as required by the courier company to facilitate the delivery!

8. Refund Policy

One year warranty against defective materials and manufacturing defects for all hardware parts inside the package.

Returnofdefective itemis accepted fora refundwithin 7 days after you receive the item. For a full refund, thepackage must be in the same condition as received with all accessories. The returned item must be delivered with postage prepaid by the customer. You must contact us first before you return it.We strongly recommend thatyoutryout the Multi-Instrument software from virtins.com first before you place your order.Please contact us if you are in doubt.