Maxcom MX3257HD Specifications download pdf (Page 6)

3257 HD Series User’s Manual No: UM-3257-D2

Page 4

2 INTRODUCTION

2.1 System Description

The 3257 HD Series is a Video / Audio / DVB-ASI fiber optic multiplexer. The 3257 Series

video modules can be configured to transmit simplex (one direction) or duplex (two direction) video &

audio, and 1 to 4 DVB-ASI signals using CWDM technology. Depending on the distance requirements

between sites, the 3257s may be equipped to operate over multimode or single mode fiber. Distances

between the transmitter and receiver can be up to 3 Km for multimode operation and up to 120 Km for

single mode operation

SYSTEM I/O CONFIGURATION

Each of the four ports can be configured for one of the following options:

Simplex Video and Simplex Audio – 2 Channels

Simplex Video and Simplex Audio – 4 Channels

Simplex Video and Simplex Audio – 6 Channels

Simplex Video and Simplex Audio – 8 Channels

DVB-ASI – 1 to 4 channels

VIDEO / AUDIO TECHNOLOGY:

The 3257 system uses uncompressed 10 bit analog to digital modulation techniques which

provides excellent video quality. The audio circuitry also digitizes the audio signals prior

to transmission. The 2 channels of audio may be used for stereo audio or for two separate

channels of audio.

DVB-ASI Transmission Technology

The ASI option on the 3257HD series will accept any PCM 1Vp-p, 75 ohm

signal up to 600Mbps. The digital electrical signal connected to the BNC connector is

converted to an optical signal. The ASI circuit’s receiver takes the incoming optical signal and

converts it back to electrical I/O: 75 Ohm up to 1Vp-p. The interface will NOT accept bipolar

signals; such as T1, T3, E1 or E3.

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Maxcom MX3257HD Specifications Page 6