User manual

2 SCOOP E-Z - User Manual 55 000 026 – Ed. B
This document is the property of AETA and can not be duplicated without authorisation November 2001
2. Introduction
2.1. Functions
The Scoop E-Z is designed to enable radio broadcasters to conduct high quality live
two-way remote broadcasts, or two way commentaries with return cue, via ISDN or
POTS lines.
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2.1.1. Algorithms
The Scoop E-Z contains a mono audio compressor/de-compressor (Codec) that
performs all necessary ISDN and POTS algorithms.
In ISDN mode, the user can select one of four operational audio standards:
1. Phone mode (G.711, 3,5kHz)
2. Live speech ( G.722, 7kHz, low delay )
3.
Music CD quality (Layer II, 20kHz)
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4. Live concert (4SB-ADPCM,15kHz, proprietary low delay )
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In POTS mode, the user has only live speech mode ( CELP , 7kHz )
2.1.2. Inputs
The Scoop E-Z contains a two channel audio mixer that enables two microphones to be
mixed. The inputs can be use as input line-level for use with previously recorder audio
system or an external mixer.
2.1.3. Outputs
Two headphone sets can simultaneously be connected to the unit. Each headphone has
hgis volume adjustment. An independent XLR line output allows connecting the return
audio to a PA or to other audio system. Headphone output can be used for mixed
received and sent signal on an audio system plugged with a jack.
2.1.4. Transmission
Using an ISDN line, transmission bit-rate is either 64kbps or 128kbps
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. Using a POTS
line, transmission bit rate depends on the telecommunication network quality with a
maximum bit-rate of 33.6 kbps. The Scoop E-Z transmits data at a minimum rate of
12.000 bits and at a maximum of 24.000 bits of information a second
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Depending on configuration version
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On the 15kHz ISDN version