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Руководство пользователя

One audio projects ERMSDCV2, Руководство пользователя

Пользовательский мануал для проекта ERMSDCV2 - это бесплатное руководство, которое поможет вам разобраться с настройкой и использованием этой аудио системы. Скачать его можно с нашего сайта. Подробная информация и инструкции по использованию доступны для скачивания на manualshive.com.

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Страница: 7 / 7

background image

END OF MANUAL

Copyright OnE Audio Projects 2011

www.oneaudio.net

[email protected]

Related OnE Audio Design :

EOSC10KV2

, ultra low THD (-120dBc) 10kHz reference oscillator.

AA5381V1

, 24bits/192kHz stand alone high performance Analog

to Digital converter.

EHAMP08

, Remote controlled TPA6120 based headphone amplifier.

EXDAC

,

Symmetric outputs high performance audio DAC with

headphone amplifier.

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Содержание ERMSDCV2

Страница 1: ...el description 3 1 Input coupling switch 3 2 RMS and logarithmic voltmeter input 3 3 RMS LOG voltmeter input overload led indicator 3 4 LNA input overload led indicator 3 5 LNA input 3 6 Power ON led indicator 3 2 3 Rear panel description 4 1 LNA output 4 2 DC supply input 4 3 Logarithmic voltmeter output 4 4 RMS voltmeter output 4 3 RMS DC and LOG voltmeter operation 5 4 Low noise amplifier LNA o...

Страница 2: ... IC from Analog Devices to achieve it The third ERMSDCV2 function is a 80dB 10Hz 100kHz bandwidth low noise amplifier This amplifier allow to measure signal level down to micro volt range it has been intended to perform voltage regulators such LM7805 LM317 TL431 and many others comparative output noise measurements in audio band Of course it can be used in any application needing to extract low si...

Страница 3: ...rement and for the LOG converter this limit is 2Vpeak So when the red LED light is on the measurement range of the LOG voltmeter has been reached but not the limit of the RMS DC voltmeter This input is protected for voltage up to 20V peak 4 LNA input overload led indicator This red led light is on if the input voltage of the LNA input exceed 0 5 mVpeak Above this limit the high gain the output mak...

Страница 4: ...or the LNA section that is noise sensitive For this reason switching mode power supplies SMPS should be avoided 3 Logarithmic voltmeter output This is the logarithmic voltmeter output BNC female connector The logarithmic output is a DC voltage matching directly voltage expressed in dBV For 1V at input you will get 0Vdc at output and for 100mV you will get 200mVdc at output This DC output voltage i...

Страница 5: ...h Using probe has also the advantage to get an higher impedance than a direct connexion The probes impedance are No probe direct connexion 1MΩ x10 oscilloscope probe 10MΩ x100 oscilloscope probe 100MΩ Using probe can avoid parasitic impedance disturbance 4 Low noise amplifier LNA operation The LNA can be used for many purpose The design has been originally built to compare the noise of different l...

Страница 6: ...limit no probe 20 Vpeak 5 2 Logarithmic voltmeter Parameter Min Typ Max Unit DC output logarithmic slope 10 mV dB Linearity from 100µV 80dBV to 1V 0dBV f 1kHz 0 5 dB Noise floor Input shorted to ground analog front end with OPA627 AD817 85 56 dBV µVrms Frequency bandwidth error 3dB 0 01 1800 kHz Error between 0dBV to 80dBV 1V to 100µV 0 5 0 5 dB 5 3 80dB Low noise amplifier Parameter Min Typ Max U...

Страница 7: ...E Audio Design EOSC10KV2 ultra low THD 120dBc 10kHz reference oscillator AA5381V1 24bits 192kHz stand alone high performance Analog to Digital converter EHAMP08 Remote controlled TPA6120 based headphone amplifier EXDAC Symmetric outputs high performance audio DAC with headphone amplifier Page 7 7 ...

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