Hoja DCS_EN - NEXCON Telecomunicaciones

Audio -Digital Converter
DCS-7000
INTRODUCTION
FUNCTIONAL SPECIFICATIONS
For digital transmission of 600 Ω audio links, coding
systems are needed for converting this signal to a
digital data stream.
The DCS-7000 converter is a digital- audio converter
at 64Kbps with V.35 interface.
hese converters are used both for digital transmission
systems: RDSI adapters, multiplex, etc., as well as for
links in which the encryption of the audio is needed
and the use of these converters permits digitalizing the
audio and using digital data ciphers for sending
confidential information.
Nexcon Telecommunications offers the DCS-7000
converter intended for converting an 600 Ω audio
signal to a digital one.
The modem is composed by a 25-pin female
connector with V.35 interface. A series of LEDs on the
front panel show the status of the system and the
synchronism with the opposite DCS-7000, as well as
the loop operation for the test.
The audio signal is encoded at 64Kbps, so you do not
lose quality
The system will run either with the internal or the
external clock (provided by the transmission
network).
Audio -Digital Converter
DCS-7000
CONVERSOR DE AUDIO A ENLACE DIGITAL
DCS-7000
Adaptador
V.35
RDSI
CIFRADO DE ENLACES DE AUDIO
MULTIPLEX
600 ohm
V.35
V.35
Audio
Cifrador
Fibra
Optica
ELECTRICAL CHARACTERISTICS
AUDIO INTERFACE
Four terminals TX and RX audio
• Impedance: 600  or higher impedance.
• 4 KHz of bandwidth.
•
OUTPUT INTERFACE
• Operation as DTE.
• SUBD-25 female connector.
• Synchronous at 64Kbps.
• Assignment / control signals RTS, CTS, DTR, DSR and
DCD by internal jumpers.
• V.35 Interface.
• External Clock.
POWER SUPPLY
• +12 VDC.
• Internal protection fuse.
FUNCTIONAL FEATURES
• PCM converter (8bits to 8kHz).
•Changing the audio level input to the potentiometer.
• Analog and digital loop.
PHYSICAL CHARACTERISTICS.
Data Interface
•DB-25 connector. Synchronous
interfaces.
64Kbps
Audio Interface
• Four terminals (2 audio and 2 audio TX RX).
Power supply
• Power Jack.
Diagnosis / Controls
• Power Led
• Led state (SYNC, and REMOTE LOOP).
• LOOP switch.
• Audio Level potentiometer.
NEXCON Telecomunicaciones S.L.
C/ Camarena, 177 Local 1
28047-MADRID (SPAIN)
Telephone number: +34 915 098 994. Fax number: +34 910 020 4 01
Email: mail@nexcon.es
Web: mail@nexcon.es
V.35
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