Pragmatism and technical superiority..................Check out the suppliers specs and see which one you like and what are the drawbacks! The users should then collectively influencing other suppliers and the HA should incorporate it in the spec. I know where I would like to put my money! Jag -----Original Message----- From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Jones Sent: 05 November 2007 16:01 To: tcug@xxxxxxxxxxxxx Subject: [TCUG] Re: Vandalism + ELV signals Microsoft -v- Apple, VHS -v- Betamax, HD -v- Blue-Ray, Blue -v- Red, pink, green etc. I wonder who will win this battle? Peter Jones Principal Traffic Systems Engineer Phone: +44 (0) 151 934 4254 Fax: +44 (0) 151 922 4514 Sefton MBC - UTC 3rd Floor Magdalen House 30 Trinity Road Bootle L20 3NJ >>> "Kinnaird, Dave" <D.Kinnaird@xxxxxxxxxxxxxx> 05/11/2007 15:02 >>> I wholeheartedly agree with you Jag. How did this ever be allowed to get this far with something so fundamental. In the era of UTMC when we are supposed to be working towards interoperability between systems, we will end up with the very basic of Traffic signal equipment, not being compatible! Dave David Kinnaird BEng CEng MIET Principal Engineer Traffic Network Systems / Prif Beiriannydd Systemau Rhwydwaith Trafnidiaeth Telematics Group / Grwp Telemateg Tel No / Rhif Ffon : 029 20873321 Fax No / Rhif Ffacs : 029 20873328 Email / E-bost : d.kinnaird@xxxxxxxxxxxxxx=20 =3D20 =3D20 -----Original Message----- From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf Of Morar Jag (ST) Sent: 05 November 2007 13:57 To: tcug@xxxxxxxxxxxxx=20 Subject: [TCUG] Re: Vandalism + ELV signals Further to my email of 30th October regarding 'ELV supplies and HA specification' you will now appreciate that the problem will be further exarcerbated by the fact that ELV controller outputs will be different for the controllers from Blue and Red corners. We must force the HA to be prescriptive on ELV supply! Regards, Jag -----Original Message----- From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Jones Sent: 05 November 2007 09:48 To: tcug@xxxxxxxxxxxxx=20 Subject: [TCUG] Re: Vanalism I replaced all Mellor heads about 3 yrs ago at a junction with the original Blue corner LED's. Unfortunately the failure rate was too high to make them cost effective: 3 lamps in one year. However, the new LED heads with the Centre mounted Led Source (***) have proven very reliable and I am happy with them. In Sefton, we now have many sites with these lanterns... good lantern design too. The only dampener is that these particular heads cannot be converted (so I'm told) to work with the new Extra Low Voltage controllers, they will have a specifically designed LED head which obviously does not need a power supply. So creating an ELV site where you have existing LED heads would not seem as simple as replacing the controller and removing some PSU's. I don't know if any kind of converter may become available, I will check with Mr Blue. (Blue sky thinking required, presumably). Regards =3D3D20 Peter Jones Principal Traffic Systems Engineer Phone: +44 (0) 151 934 4254 Fax: +44 (0) 151 922 4514 Sefton MBC - UTC 3rd Floor Magdalen House 30 Trinity Road Bootle L20 3NJ >>> "Matthew Smith" <MASmith@xxxxxxxxxxxx> 05/11/2007 09:28 >>> Quick straw poll. What are peoples experiences with the robustness of signal heads from the red and blue corner? From practical experience does one survive up better than another. Thanks Matt Smith. 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