Overview

The SX-6 is the cost-effective solution for broadcasters, systems integrators, and other audio and multimedia professionals who require affordable, balanced output, broadcast quality digital audio playback from their PC applications. Built around a Texas Instruments Digital Signal Processor, the SX-6 not only supports .WAV, MusiFile and .ATX file formats, it features multiple advanced compression algorithms including ISO/MPEG Layer I/II bit rate reduction technology for compression rates of up to 16:1. Dual stereo playback in a single add-in card gives broadcasters the flexibility to overlap spots or songs for seamless segues. There's even a feed-through microphone input that can be mixed with the source output via the SX-6's on-board mixer. No need for external gear! And because it features balanced analog outputs, the SX-6 provides seamless interfacing to professional audio applications.

The Series 2 family of digital audio adapters from Antex are the premier choice for multi-channel, ultra high fidelity, direct to disk digital sound sampling and playback. That's because Antex is focused on bringing solutions and the latest technology to OEMs, systems integrators, broadcasters, audio professionals and personal computer users. And that's why thousands of professionals world-wide rely on Antex digital audio quality in their PCs. To hear all the possibilities for your application, call Antex today.

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Features

• Stereo and dual device playback
• Dual stereo MPEG playback to 32 kHz
• 80386/486/Pentium ISA compatible
• Multiple decode capability: 16-bit PCM, 8-bit PCM, OKI ADPCM, Microsoft ADPCM, ISO MPEG Layer II
• Supports .WAV, MusiFile and .ATX file formats
• All standard sample rates
• 20 Hz to 20 kHz frequency response
• 85 dB minimum dynamic range
• 0.02% THD+N maximum
• Balanced Line level outputs software selectable +4 dBu or -10 dBV nominal levels
• Mic input that can be mixed with output
• 1/2 size ISA/AT type adapter
• Programmable TMS320C31 DSP
• Microsoft MCI API drivers: Windows 3.X, 95 and NT
• DOS driver
• On board programmable EEPROM for OEM software protection
• Designed and manufactured in the U.S.A.

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Technical Specifications

Audio Output/2 Channels Balanced
Drive level Selectable +4 dBu or -10 dBV (16 dB below clipping)
Output Impedance 50 ohms
Connection Female 9-pin D-connector

Microphone Input Mono Unbalanced
Level 10 mV RMS max
Impedance 1K ohms
Connection Internal header

Signal Quality
Sample Rate 8, 11.025, 12, 16, 18.9, 22.05, 24, 32, 44.1, 48 kHz and non standard rates (software selectable)
Quantization 8 or 16-bit (software selectable)
Dynamic Range 85 dB minimum (90 db typical); 16-bit PCM
THD+N 0.02% maximum; 16-bit PCM @ 48 kHz S.R
Frequency Response 20 Hz to 20 kHz, ±0.5 dB

Digital Audio
Modes Stereo, mono, dual stereo or dual mono playback (MPEG dual stereo up to 32 kHz)
Output 18-bit, 64x oversampling Sigma Delta Conversion

Signal Processor
Type Texas Instruments TMS32OC 31 floating point DSP
Tasks Real-time data decoding. PC data transfers, D/A resource handling

Memory
DSP Program 16 K x 32 zero wait state SRAM
Shared Memory 16 K x 32 zero wait state SRAM

PC Interface
Type 16-bit ISA
Transfer Method Programmed I/O (no DMA)
Interrupts 2, 3, 4, 5, 10, 11, 12 software selectable
I/O Base Address 180, 220, 240, 280, 300, 320, 380 software selectable

Power Requirements
STD PC voltages +5 and ±12 VDC
Current Draw 1 A @ +5 V, 100 mA @ +12 V

General
Size 6.75L x 3.9H x 0.7W inches
Weight 9 oz.
Operating Temp. 0°C to 70°C

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Applications

• Digital Broadcast Systems and Automation
• PC-Based Digital audio playback for Sound Contractor Installations
• Music and entertainment
• Kiosks and other integrated computer audio systems

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Software Development Tools

Antex Series 2/SX-6 driver software allows an application program to provide direct to-disk and playback of high quality digital audio using the SX-6 under either DOS, Microsoft Windows, Windows NT or OS/2.Under DOS a high level digital audio Application Program Interface (API) allows all of the SX-6 features to be fully utilized. Languages supported include C, Pascal, and BASIC. The drivers are available as an Audio Developers Kit (ADK) in either a TSR or Linkable version and are downward compatible with existing Antex drivers. In Windows 3.1, 95 and NT, the SX-6 is supported by the multimedia extension allowing it to be used with any Windows multimedia application. Because of the SX-6's on board DSP, the format for audio data is completely user programmable. Standard data formats provided are 16 bit PCM, 8-bit PCM, OKI ADPCM, MS ADPCM, and ISO/MPEG Layer I/II.

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