Benchmark ADC1 USB Скачать руководство пользователя страница 26

Страница: 26 / 34

Specifications

Analog Audio Inputs

Number of Inputs (balanced)

Connector

Gold-Pin Neutrik™ female XLR

Impedance 200

Ω

Sensitivity

-14dBu to +29 dBu (at 0 dBFS)

Clock Reference Input

Format

Auto-detect AES/EBU, Word Clock,
and Super Clock (256x)

Impedance 75

Ω

Sensitivity

150 mV AES
200 mV Word Clock
750 mV Super Clock

Transformer Coupled

Yes

DC Blocking Capacitors

Yes

Transient and Over-Voltage Protection

Yes

Jitter Attenuation Method

Benchmark

UltraLock

™

Worldclock Reference Output

Impedance 75

Ω

Level

5 Vpp
2.5 Vpp into 75

Ω

Transformer Coupled

DC Blocking Capacitors

Transient and Over-Voltage Protection

Yes

ADC1 Instruction Manual

Page 26

Содержание ADC1 USB

Страница 1: ...Benchmark ADC1 Instruction Manual 2 Channel 24 bit 192 kHz Audio Analog to Digital Converter...

Страница 2: ...he dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful int...

Страница 3: ...o Factory Default Settings 13 Meter Display 13 Adjusting Input Gain 14 First Stage Gain 14 Second Stage Gain Controls 14 Rack Mounting 15 Using ADAT S MUX 16 UltraLock What is It 17 Performance 20 Fre...

Страница 4: ...o precise studio reference levels It may also be used to optimize the gain staging between a microphone preamplifier and the ADC1 The ADC1 has four digital outputs 1 balanced XLR 2 coaxial and 1 optic...

Страница 5: ...f artifacts as low as 140 dBFS application of jitter amplitudes as high as 12 75 unit intervals UI and application of jitter over a frequency range of 2 Hz to 200 kHz A poor quality clock reference wi...

Страница 6: ...ction clock input with auto recognition of AES SPDIF Word Clock or Super Clock Word Clock output Total jitter immunity with Benchmark s phase accurate UltraLock technology Simultaneous output at two d...

Страница 7: ...Direct connection of piezo pickups is not recommended as these pickups require higher input impedances to prevent low frequency roll off problems XLR pin 2 Audio In XLR pin 3 Audio In XLR pin 1 Cable...

Страница 8: ...has an output impedance of 110 Ohms This output is DC isolated transformer coupled current limited and diode protected It is designed to drive standard 4 Vpp AES signals into a 110 Ohm load Use 110 O...

Страница 9: ...interfacing with consumer style digital interfaces BNC to RCA coaxial cords are also available from Benchmark BNC connectors are specified by the AES3 id and SMPTE 276M standards for 75 1 Vpp digital...

Страница 10: ...lder The fuse holder is built into a drawer next to the IEC power connector The drawer requires two 5 x 20 mm 250 V Slo Blo Type fuses The drawer includes a voltage selection switch with two settings...

Страница 11: ...le through the clock source and sample rate options for the Main Outputs Press the Mode Switch down repeatedly to to cycle through the sample rate and bit depth options for the Aux Output Press and ho...

Страница 12: ...xed Frequency Using the Internal Clock Source The ADC1 can be programmed to convert at a fixed frequency using an internal clock source The following sample rate frequencies are available 44 1 48 88 2...

Страница 13: ...actory Default settings To reset the ADC1 to Factory Default settings Press and hold the Mode Switch up for approximately 3 seconds Meter Display The ADC1 is equipped with a multi function 9 segment L...

Страница 14: ...3 dB to 22 dB This gain structure provides ultra high performance at any gain setting between 1 3 dB and 42 dB The higher gain settings will allow direct connections from many instrument pickups no DI...

Страница 15: ...exactly that of a standard 19 panel The ADC1 is one rack unit high Either ear of the ADC1 can be mounted directly to a standard 19 rack A machined junction block connects the other ear to a width blan...

Страница 16: ...ple rate will not alter the pitch of the audio but will introduce errors These errors may not be discovered until it is too late S MUX Must be Decoded Before Digital Processing No DSP process should b...

Страница 17: ...me do However not all two stage PLL circuits are created equal Many two stage PLLs do not remove enough of the low frequency jitter In addition two stage PLL circuits often require several seconds to...

Страница 18: ...everely degrade stop band performance and can render these filters useless for preventing aliasing The obvious function of a digital anti alias filter is the removal of audio tones that are too high i...

Страница 19: ...re jitter immune under all operating conditions they will never add audible jitter induced artifacts to an audio signal What UltraLock converters cannot do UltraLock converters cannot undo damage that...

Страница 20: ...Hz sample rate Note that the amplitude response is down by less than 0 05 dB at 10 Hz and 80 kHz The bass response extends well below the 10 Hz limitation of the measurement equipment and the high fre...

Страница 21: ...Inter Channel Phase Response This graph shows that the differential phase is significantly better than 0 25 from 10 Hz to 20 kHz ADC1 Instruction Manual Page 21...

Страница 22: ...vs Level 1 KHz w 20 kHz LPF unweighted Below 4 dBFS distortion is lower than the noise floor of the converter Above 3 dBFS distortion reaches a maximum value of only 107 dBFS ADC1 Instruction Manual P...

Страница 23: ...bove graph demonstrates that the ADC1 is free from idle tones and clock crosstalk The highest spurious tone measures 128 dBFS and is AC line related hum The highest non line related tone measures 135...

Страница 24: ...The above FFT plot shows that the ADC1 has very little harmonic distortion Distortion is exceptionally low and is dominated by 2nd harmonic distortion Note the near absence of spurious tones ADC1 Ins...

Страница 25: ...Any jitter present at the conversion sampling circuit would produce sidebands equally spaced above and below the 10 kHz test tone The tone at 20 kHz is due to second harmonic distortion and measures...

Страница 26: ...uper Clock 256x Impedance 75 Sensitivity 150 mV AES 200 mV Word Clock 750 mV Super Clock Transformer Coupled Yes DC Blocking Capacitors Yes Transient and Over Voltage Protection Yes Jitter Attenuation...

Страница 27: ...its Impedance 110 XLR 75 BNC Level 4 Vpp into 100 XLR 1 Vpp into 75 BNC Transformer Coupled Yes DC Blocking Capacitors Yes Transient and Over Voltage Protection Yes Audio Performance Fs 44 1 to 192 kH...

Страница 28: ...z 3 dB at 23 kHz 110 dB at 27 kHz Passband Ripple 0 008 dB Crosstalk 105 dB at 20 kHz 130 dB at 1 kHz 200 dB at 20 Hz Jitter Tolerance With no Measurable Change in Performance 12 75 UI sine 100 Hz to...

Страница 29: ...s at 48 kHz 0 75 ms at 88 2 kHz 0 67 ms at 96 kHz 0 63 ms at 176 4 kHz 0 59 ms at 192 kHz LED Status Indicators LED Location Front Panel Mode Indicators 9 green Meter 14 green 2 yellow 2 red AC Power...

Страница 30: ...nformation RoHS Compliant Information RoHS Compliant Information This statement clarifies Benchmark Media Systems Inc product compliance with the EU s European Union directive 2002 95 EC or RoHS Restr...

Страница 31: ...Certificate of Conformity ADC1 Instruction Manual Page 31...

Страница 32: ...serial number greater than 00261 returned from the European Union for warranty repair must have the required RoHS logo on the product label otherwise repairs will be billed at the normal shop rate Be...

Страница 33: ...chased outside the US and Canada please refer to the Extended Two 2 Year International Warranty The Benchmark s Extended 2 Year International Warranty Benchmark Media Systems Inc optionally extends th...

Страница 34: ...nchmark Media Systems Inc All rights reserved Benchmark Media Systems Inc 5925 Court Street Road Syracuse NY 13206 1707 USA 1 315 437 6300 FAX 1 315 437 8119 http www benchmarkmedia com ADC1 Instructi...

Результаты поиска

Содержание ADC1 USB

Отзывы:

Похожие инструкции для ADC1 USB

Бренды по названию

Популярные бренды

Benchmark ADC1 USB, Инструкция по эксплуатации

Результаты поиска

Содержание ADC1 USB

Отзывы:

Похожие инструкции для ADC1 USB

Бренды по названию

Популярные бренды