DRAKE MQM6000L Manual de Instruções descarregar pdf (Página 5)

General Description 5

GENERAL DESCRIPTION

The R.L. Drake model MQM6000L is a professional quality,

digital headend transcoder that receives up to six multipro-

gram transport streams via six BNC, ASI inputs. When six

streams are input, the MQM6000L then multiplexes one

program from each input and applies the result to the QAM

modulator and up converter for output.

A program filter is provided to allow selection of the one

desired program from each input. Other programs in the

incoming streams are dropped.

The MQM6000L offers a +40 dBmV output upconverter with

phase noise reduced to a level that is compatible with QAM

modes up through 1024QAM.

The MQM6000L can be used with the Drake Digital

Headend Remote Control Software, version to be an-

nounced, for setting up the program filtering, remote

controlling, or remote monitoring of operating parameters.

This program can also be used to download new firm-

ware into the unit if that ever becomes desirable.

The MQM6000L operates in a fixed output clock mode and

processes null packets when required to maintain the set

fixed clock rate. PCR correction is included.

PROGRAM FILTERING

A 'Select Program' function is provided to allow the

operator to select which MPEG program present on each of

the six input streams is to be included in the output

multiplex.

PSIP OPTIONS

The MQM6000L can be set to process PSIP information

from all six sources and rewrite tables containing combined

PSIP information, or in cases where the off-air broadcast

channels may not be transmitting some or all of the tables,

it can be set to ignore and discard the PSIP tables com-

pletely, or it can be set to generate MGT and VCT tables

without EIT tables. Null packet processing is applied as

necessary to keep the output data rate at the desired

setting. PCR correction is performed when necessary.

OUTPUT

The RF output is always QAM regardless of whether the

input is VSB or QAM and the built-in agile upconverter

provides +40 dBmV output.

ENTER

MQM6000L Multiplexing QAM Modulator

0.020 Mbits/S

QAM OUTPUT

120 VAC 60 Hz

15 WATTS

AC POWER

RS232

OUT

RF OUTPUT

ASI INPUTS

123456

1 2 3 4 5 6 7 8 9 10 ... 14 15

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