User guide

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Introduction/General use of the unit
Introduction
General description
Main features
The MAC 401 model is an AV analogue TV signal to COFDM digital TV signal standalone
modulator unit. Suitable for individual residential installations, it is an ideal solution for
the distribution of analogue video signals with COFDM digital TV modulation in a single
standalone unit.
AV1 to AV4 are also serially digitalised, coded in MPEG2 and modulated in COFDM. The
COFDM base band signal is modulated on an RF carrier that can be adjusted at the output
to the VHF and UHF bands.
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Programming:
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User interface with LCD display and control button for basic conguration.
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User interface from web browser via Ethernet connection.
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All settings are automatically memorised.
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Reprogrammable as many times as required.
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Firmware updated via Ethernet connection with web browser.
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Signal processing:
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4 CVBS stereo video-audio inputs.
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Supported video standards: PAL/SECAM/NTSC.
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MPEG2 and MPEG4 LayerII coding.
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RF DVB-T output, compatible with TDT.
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RF output, adjustable in VHF and UHF bands.
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Loopthrough for combination of additional RF TV signals.
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Dimensions: 302 mm x 251 mm x 44 mm
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Weight: 1.5 kg
The main characteristics of the MAC 401 model are described below.
MAC 401 model
Recommended for individual residential installations, consisting of two AV inputs and one
RF VHF/UHF output that delivers an output level of >80dBμV.
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Inputs:
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4 CVBS video inputs with stereo audio.
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Supported video standards: PAL/SECAM/NTSC
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RF loopthrough input.
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Processing:
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Video: MPEG2 and MPEG4 LayerII.
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Audio: MPEG1 Layer II.
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Quality: DVD full D1.
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Generates the PSI tables: PAT, PMT, SDT, NIT, TDT and TOT.
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LCN processing.
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Outputs:
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DVB-T output according to ETSI EN 300 744.
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Output MER > 38dB (typical).
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Band aliasing < -45dB.
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Output frequency bands: VHF + UHF.
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Average output level 80dBμV.
General use of the unit
Below is described how to operate the unit using the control button and interpret the visual
indications on the LCD display. The program comprises a main menu made up of sub-men-
us that can be selected to modify the basic operation settings of the unit.
KEY
1 Mains connector
2 Front panel with cluster map
3 Display (LCD)
4 Control button
5 AV input 1
6 AV input 2
7 AV input 3
8 AV input 4
9 Ethernet connector
10 TV Loopthrough input
11 TV COFDM output
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