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ADC2

convertisseur A/D Micro/Ligne de très haut de gamme

Description

Le ADC2 est un convertisseur A/D stéréo avec des entrées Micro/Ligne des des sorties AES/EBU et FireWire (en option). Il se situe nettement dans le haut de gamme des convertisseurs, aussi bien pour ses performances audio que pour ses fonctionnalités exclusives.

Il met en oeuvre des solutions originales pour préserver l’intégrité du signal audio, et utilise des préamplis micros de très haute qualité. Tous le trajet du signal est symétrique de l’entrée jusqu’aux étages de conversion.

Power

  • Mains voltage: 115 V or 230 V with voltage selector
  • Fuse rating: 630 mA slow blow
  • Power consumption: 60 VA max.

Size

  • Depth: 30 cm
  • Width: 43,3 cm (19″)
  • Height: 4,4 cm (1HU)

Analogue Line Inputs

  • Two channels on two XLR female connectors, pin 2 hot
  • Symmetrical, not earth free
  • Input impedance > 5 kΩ
  • Analogue Microphone Inputs
  • Two channels on two XLR female connectors, pin 2 hot
  • Symmetrical, not earth free
  • Input impedance > 5 kΩ
  • 48 V phantom power switchable

AES/EBU Input

  • Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
  • All sampling frequencies must lie within ±100 ppm of the nominal sampling frequency
  • Maximum input word-length: 24 Bits
  • Channel Status Data: Input accepts professional or consumer format
  • Connector: XLR female, 110 Ω (termination switchable on/off)

AES/EBU Output

  • Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
  • Output word-length: 16 Bits, 24 Bits
  • Connector: Two times XLR male, 110 Ω
  • Professional Channel Status Data format
  • Single Wire format for sampling frequencies between 44.1 kHz and 192 kHz
  • Double Wire format for sampling frequencies of 88.2 kHz or higher (switch selectable)

S/PDIF Output

  • Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
  • Output word-length: 16 Bits, 24 Bits
  • Connector: One RCA, 75 Ω
  • Professional Channel Status Data format

Word-sync I/O

  • Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
  • Connector: BNC, 75 Ω (termination on input switchable on/off)
  • TTL level

Firewire

A Firewire I/O kit is available as an option

Measurements

All measurements are taken at the least sensitive setting of the input attenuators, i.e. +26 dBu sensitivity for line and +6 dBu sensitivity for mic inputs. (Equals the sensitivity for a 0 dBFS output level).

Low Cut Frequency Response:

1st order high-pass, 3 dB point at 40 Hz

Frequency Response:

  • Fs = 44.1 kHz, 20 Hz…20 kHz: ±0.3 dB
  • Fs = 48 kHz, 20 Hz…20 kHz: ±0.3 dB
  • Fs = 88.2 kHz, 20 Hz…30 kHz: ±0.3 dB
  • Fs = 96 kHz, 20 Hz…30 kHz: ±0.3 dB
  • Fs = 176.4 kHz, 20 Hz…40 kHz: ±0.3 dB
  • Fs = 192 kHz, 20 Hz…40 kHz: ±0.3 dB

THD+N at 1 kHz:

Less than −103 dBFS at −3 dBFS output level, unweighted

SNR at −40 dBFS input:

Higher than 110 dB unweighted

Crosstalk:

Less than −120 dB, 0 Hz…20 kHz

CMRR:

  • Higher than 90dB at 1 kHz
  • Higher than 80dB at 20 kHz
  • Higher than 60dB at 20 Hz

Interchannel Phase Tracking:

Better than ±0.3°, 20 Hz…20 kHz

Latency:

  • Fs = 44.1 kHz: 2.6 ms
  • Fs = 48 kHz: 2.49 ms
  • Fs = 88.2 kHz: 1.8 ms
  • Fs = 96 kHz: 1.75 ms
  • Fs = 176.4 kHz: 1.4 ms
  • Fs = 192 kHz: 1.38 ms

Parameter Tables

Analogue Gain Line Input (dB):

−26.0, −25.0, −24.0, −23.0, etc. in 1dB steps up to +16.0

Example: with a gain setting of −26.0, a +26 dBu input signal generates a 0 dBFS output signal.

Analogue Gain Mic Input (dB):

−6.0, −5.0, −4.0, etc. in 1 dB steps up to +54.0

Example: with a gain setting of −6.0, a +6 dBu input signal generates a 0 dBFS output signal.

Digital Output Gain (dB):

−100.0, −92.0, −89.0, −86.0, −83.0, −80.0, −77.0, −74.0, −71.0, −68.0, −65.0, −62.0, −59.0, −56.0, −53.0, −50.0, −48.0, −46.0, −44.0, −42.0, −40.0, −39.0, −38.0, −37.0, −36.0, −35.0, −34.0, −33.0, −32.0, −30.0, −29.5, −29.0, −28.5, −28.0, −27.5, −27.0, −26.5, −26.0, −25.5, −25.0, −24.5, −24.0, −23.5, −23.0, −22.5, −22.0, −21.5, −21.0, −20.5, −20.0, −19.5, − 19.0, −18.5, −18.0, −17.5, −17.0, −16.5, −16.0, −15.5, −15.0, −14.5, −14.0, −13.5, −13.0, −12.5, −12.0, −11.5, −11.0, − 10.5, −10.0, −9.5, −9.0, −8.5, −8.0, −7.5, −7.0, −6.5, −6.0, −5.8, −5.6, −5.4, −5.2, −5.0, −4.8, −4.6, −4.4, −4.2, −4.0, −3.8, −3.6, −3.4, −3.2, −3.0, −2.8, −2.6, −2.4, −2.2, −2.0, −1.8, −1.6, −1.4, −1.2, −1.0, −0.8, −0.6, −0.4, −0.2, 0.0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.2, 5.4, 5.6, 5.8, 6.0, 6.2, 6.4, 6.6, 6.8, 7.0, 7.2, 7.4, 7.6, 7.8, 8.0, 8.2, 8.4, 8.6, 8.8, 9.0, 9.2, 9.4, 9.6, 9.8, 10.0, 10.2, 10.4, 10.6, 10.8, 11.0, 11.2, 11.4, 11.6, 11.8, 12.0, 12.2, 12.4, 12.6, 12.8, 13.0, 13.2, 13.4, 13.6, 13.8, 14.0, 14.2, 14.4, 14.6, 14.8, 15.0, 15.2, 15.4, 15.6, 15.8, 16.0, 16.2, 16.4, 16.6, 16.8, 17.0, 17.2, 17.4, 17.6, 17.8, 18.0

Compressor Threshold (dBFS):

−25.0, −24.8, −24.6, −24.4, −24.2, −24.0, −23.8, −23.6, −23.4, −23.2, −23.0, −22.8, −22.6, −22.4, −22.2, −22.0, −21.8, −21.6, −21.4, −21.2, −21.0, −20.8, −20.6, −20.4, −20.2, −20.0, −19.8, −19.6, −19.4, −19.2, −19.0, −18.8, −18.6, −18.4, −18.2, −18.0, −17.8, −17.6, −17.4, −17.2, −17.0, −16.8, −16.6, −16.4, −16.2, −16.0, −15.8, −15.6, −15.4, −15.2, −15.0, −14.8, −14.6, −14.4, −14.2, −14.0, −13.8, −13.6, −13.4, −13.2, −13.0, −12.8, −12.6, −12.4, −12.2, −12.0, −11.8, −11.6, −11.4, −11.2, −11.0, −10.8, −10.6, −10.4, −10.2, −10.0, −9.8, −9.6, −9.4, −9.2, −9.0, −8.8, −8.6, −8.4, −8.2, −8.0, −7.8, −7.6, −7.4, −7.2, −7.0, −6.8, −6.6, −6.4, −6.2, −6.0, −5.8, −5.6, −5.4, −5.2, −5.0, −4.8, −4.6, −4.4, −4.2, −4.0, −3.8, −3.6, −3.4, −3.2, −3.0, −2.8, −2.6, −2.4, −2.2, −2.0, −1.8, −1.6, −1.4, −1.2, −1.0, −0.8, −0.6, −0.4, −0.2, 0.0

Sampling Frequency (kHz):

44.1, 48, 88.2, 96, 176.4, 192

MANUEL ADC2

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