Technical specifications, Specifications: 1820m system – CREATIVE 1212M User Manual

Page 103

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7 - Appendix

Technical Specifications

E-MU Digital Audio System

103

Technical Specifications

Specifications: 1820M System

GENERAL

Sample Rates

44.1 kHz. 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz from
internal crystal. Externally supplied clock from S/PDIF, ADAT
(or word clock with optional Sync Card)

Bit Depth

16 or 24-bits

Hardware DSP

100MIPs custom audio DSP. PCI Bus-Mastering DMA subsystem
reduces CPU usage. Zero-latency direct hardware monitoring
with effects. 1394 Firewire Core - Texas Instruments

Converters & OpAmps

ADC - AK5394 (AKM)

DAC - CS4398 (Cirrus Logic)

OpAmp - NJM2068M (JRC)

WDM Drivers

8 channels — operational at 44.1kHz, 48kHz, 88.2kHz, 96kHz,
176.4kHz & 192kHz

AudioDockM Power Use

1.25A @ +12V 15W.

ANALOG LINE INPUTS

Type

Servo-balanced, DC-coupled, low-noise input circuitry

Level (software selectable)

Professional: +4 dBu nominal, 20 dBu maximum (balanced)

Consumer: -10 dBV nominal, 6 dBV maximum (unbalanced)

Frequency Response

+/- .05dB, 20 Hz - 20 kHz

THD + N

-110 dB (.0003%) 1kHz at -1 dBFS

SNR

120 dB (A-weighted)

Dynamic Range

120 dB (A-weighted)

Channel Crosstalk

< -115 dB, (1 kHz signal at -1 dBFS)

Common-mode Rejection

> 40 dB at 60Hz

Input Impedance

10K ohm

ANALOG LINE OUTPUTS

Type

Balanced, low-noise, 2-pole low-pass differential filter

Level (software selectable)

Professional: +4dBu nominal, 20dBu (balanced)

Consumer: -10dBV nominal, 6dBV maximum (unbalanced)

Frequency Response

+0.0/-0.35 dB, 20 Hz - 20 kHz

THD + N

-105 dB (.0006%) 1kHz signal at -1dBFS

SNR

120 dB (A-weighted)

Dynamic Range

120 dB (A-weighted)

Stereo Crosstalk

< -120 dB, 1kHz

Output Impedance

560 ohms

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