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Analogue and Digital TV Distribution Systems


DVB-C Transmission System


 

DVB-C House Monitoring

To provide a migration path from existing RF distribution systems we have designed an expandable RF system that modulates 8 video and stereo audio services onto digital cable.

The latest version of this system is frequency agile, covering 58 to 850mHz in 8mHz bandwidth channels. Individual channels can be ‘named’ so all set-top boxes will display the received channel name ‘ON Screen’.

The design brief was to allow greater numbers of channels to be carried on a broadcasters existing house ring-main system, at the same time allowing a smooth migration on the same cable infrastructure from analogue to digital.

The DVB-C channels can be decoded with either set-top boxes that are commercially available in Europe, or using a Rotronics Tuner box variant.



A bespoke broadband tuner unit designed in conjunction with a major broadcaster for their internal RF cable monitoring system. These are processor controlled 90 channel units covering 47 -850mHz, with 8 digit alphanumeric displays, and the ability to reprogramme channel allocations and names via a link to a PC.

Digital DVB-T and DVB-C versions of both our types of Broadband Tuner are in development

INPUT:  Standard Belling Lee UHF connector. F type optional. Programming via 9pin D connector.

OUTPUT:  Video and Mono audio on SCART connector, including the SCART control switching. Headphone monitoring on the front panel with independent volume control.

DISPLAY:  Eight character display, software programmable to display any message. Display is clearly readable, bright LED type.

POWER:  Internally mains powered via IEC connector.

PROGRAMMING:  Tuner is supplied with PC software to allow each of the 90 channels to be programmed with frequency and name.

DIMENSIONS:  Metal housing, 250mm x 250mm x 44mm. A single and dual 19" rack mount versions are available.



Product Code: R0030/59


 

Rack-Mount DTT Tray


 
This tray unit has been designed to accept either a DTT or DSAT decoder. The tray has a SCART connector on the rear, and is supplied with a short double ended cable to link between the two.

Depending on the option chosen, the tray has two SDI outputs and a single analogue video output, all on BNC connectors.

The audio is brought out as balanced on XLR connectors.

Overall height of the tray system is 3RU, using a Pace or similar receiver. If a larger receiver is used this may be exceeded. The electronics are contained in a 1RU case with power indication

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