Thanks much for the help Terry. -----Original Message----- From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]On Behalf Of tsmith@xxxxxxxxxxxxx Sent: Thursday, December 08, 2005 8:11 PM To: opendtv@xxxxxxxxxxxxx Cc: dalekelly@xxxxxxxxxxx Subject: [opendtv] Re: FW: DVB Receiver Standard Dale You're right about the basic performance; there are certain choices which can be made with respect to channel coding and modulation which may be more or less suitable for particular countries or regions. The DVB terrestrial standard, ETSI EN 300 744, defines the framing, channel coding and modulation which determines the key RF system performance. Weaknesses like susceptibility to impulse noise interference are obviously not addressed and that is where chip implementations can improve matters. Specifications like the NorDig and to some extent Australia's own receiver standard, AS/NZ 4933 based on ETSI/DVB standards, address the accompanying SI rather than core transmission issues. The specifications define subsets of DVB-SI and add private descriptors, such as logical channel numbering, in order to present the services to the viewer in a particular way. They may also define the middleware to be used in receivers. BTW you can download DVB standards from the European Telecommunications Standards Institute (ETSI) website: http://www.etsi.org/services_products/freestandard/home.htm. At the search page type in the standard number 300 744 for DVB-T and you'll see all the published versions. Type in DVB and up pops all the DVB standards. On the logo issue, there seems to me to be a lot of consumer IRDs on the market that according to the DVB website are not registered. Terry Terence Smith Senior Broadcast Engineer AUSTAR Entertainment Pty Ltd t. +612 9394 9888 f. +612 9295 0158 e. tsmith@xxxxxxxxxxxxx w. http://www.austar.com.au/ "Dale Kelly" <dalekelly@verizo n.net> To Sent by: "Opendtv@xxxxxxxxxxxxx" opendtv-bounce@fr <opendtv@xxxxxxxxxxxxx> eelists.org cc Subject 09/12/2005 10:41 [opendtv] FW: DVB Receiver Standard AM Please respond to opendtv@freelists .org My understanding from past research and discussion and in reading the DVB web page, is that the basic performance requirements are the virtually the same. I once had a copy of the DVB standard but can't locate it and the info is no longer available to non DVB members, as best I can determine anyway. As of two years ago, at least, my statements regarding the labeling restrictions are correct. Perhaps you can fill in the blanks...? -----Original Message----- From: tsmith@xxxxxxxxxxxxx [mailto:tsmith@xxxxxxxxxxxxx] Sent: Tuesday, December 06, 2005 2:11 PM To: opendtv@xxxxxxxxxxxxx Cc: dalekelly@xxxxxxxxxxx Subject: DVB Receiver Standard Dale The NorDig collection of specifications apply only to NorDig member countires: Denmark, Finland, Iceland, Norway and Sweden. NorDig's specifications cover a number of specific requirements for DVB receivers which the members have agreed upon e.g. a logical channel number descriptor, MHP mifddleware, etc. My understanding is that the use of the DVB logo is controlled by the DVB Project. Terry Smith Terence Smith Senior Broadcast Engineer AUSTAR Entertainment Pty Ltd t. +612 9394 9888 f. +612 9295 0158 e. tsmith@xxxxxxxxxxxxx w. http://www.austar.com.au/ ********************************************************************** This email and any files transmitted with it are confidential and is intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. This footnote also confirms that this email message has been scanned by AUSTAR Communications content and virus scanning applications for the presence of computer viruses. ********************************************************************** ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.