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经销商	联系方式
Avid Audio	010-57306096 (音频) 、010-57306095 (视频)

Analog Input Card for Stage Rack
The SRI (Stage Rack Input) Card is an option for the VENUE Stage Rack that provides eight channels of software-controlled, fully recallable analog mic/line inputs via XLR connectors for your Digidesign® VENUE system. You can install up to six SRI Cards into a single Stage Rack for a total of 48 analog mic/line input channels.

Features

Eight channels of analog mic/line-level inputs via XLR3-female connectors
24-bit sigma-delta analog-to-digital (A/D) converters
20 dB pad (***able per channel via VENUE D-Show® software)
48V phantom power (***able per channel via D-Show software)
Signal presence and phantom power LEDs
Polarity invert (***able per channel via D-Show software)

Analog Mic/Line Inputs
Connector (x8)	XLR3-F, balanced
Gain	+10 dB to +60 dB (6 dB analog steps, with 0.1 dB digital increments and crossfade at analog relay switch point)
Maximum Input Level	+34 dBu (pad ON)
Pad	20 dB
Input Impedance	pad OFF: 10k Ohm balanced; pad ON: 4k Ohm balanced
Phantom Power	+48V
EIN	-126 dBu (maximum gain, 150 Ohm source, 22 Hz – 20 kHz BW, unweighted)
THD + N	0.003% (minimum gain, pad OFF, -1 dBFS output, 20 Hz – 20 kHz BW)
A/D Converter Latency	0.25 ms (Fs = 48 kHz)

All measurements at Fs = 48 kHz, with 150 Ohm source impedance and 600 Ohm load impedance, unless otherwise specified.

0 dBu = 0.775Vrms

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