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.
OUTPUT
The RF output is always QAM regardless of whether the
input is VSB or QAM and the built-in agile upconverter
pr40 dBmV output.
ENTER
MQM6000L Multiplexing QAM Modulator
0.020 Mbits/S
QAM OUTPUT
120 VAC 60 Hz
15 WATTS
AC POWER
RS232
IN
OUT
RF OUTPUT
ASI INPUTS
1
2
3
4
5
6
