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Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
Hi all,
I am shortly taking possession of two Televes Avant 5 compact headends along with a PCT 3.0 programmer. The only fly in the ointment is that the cable that connects the prgorammer to the headends is missing.from the deal. From what I can gather, the connector sockets are RJ45 at both ends and that a 8 way flat IDC cable is used. I can make up my own cable using RJ45 connectors and a 8 way flat IDC cable. Given that the cable is a flat 8 way, and that the RJ45 connectors only allow you to put the cable in one of two possible ways, this narrows down what the pin to pin wiring is for this cable. This means that the cable will be a straight through from end to end e.g 1 to 1, 2 to 2, 3 to 3, 4 to 4, 5 to 5, 6 to 6, 7 to 7, 8 to 8. or a crossover cable end to end e.g 1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2, 8 to 1. The question is Which? I don't want to have to pay nearly 100 quid for a 2nd programmer just to have the elusive cable..... Looking forward to your reply, Stephen. |
Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
Terry,
Thank you for your clarification. I full accept your point about the meaning of crossover cable in an ethernet context, which is usually used to connect a PC direct to another PC or a hub/switch to another hub/switch. And than you for introducing me to the tern rollover... So now my question has morphed to, is it a straight through or a rollover connection? Regards, Stephen. "Terry Casey" wrote in message ... In article , says... Hi all, I am shortly taking possession of two Televes Avant 5 compact headends along with a PCT 3.0 programmer. The only fly in the ointment is that the cable that connects the prgorammer to the headends is missing.from the deal. From what I can gather, the connector sockets are RJ45 at both ends and that a 8 way flat IDC cable is used. I can make up my own cable using RJ45 connectors and a 8 way flat IDC cable. Given that the cable is a flat 8 way, and that the RJ45 connectors only allow you to put the cable in one of two possible ways, this narrows down what the pin to pin wiring is for this cable. This means that the cable will be a straight through from end to end e.g 1 to 1, 2 to 2, 3 to 3, 4 to 4, 5 to 5, 6 to 6, 7 to 7, 8 to 8. or a crossover cable end to end e.g 1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2, 8 to 1. The question is Which? I don't want to have to pay nearly 100 quid for a 2nd programmer just to have the elusive cable..... Looking forward to your reply, I can't help you, I'm afraid, but I would be cautious about the use of the term 'crossover cable' which, when combined with RJ45 connectors, would normally be interpreted as an Ethernet crossover cable in which two pairs out of the four are swapped over - see http://en.wikipedia.org/wiki/Ethernet_crossover_cable What you are describing is a rollover cable - see http://en.wikipedia.org/wiki/Rollover_cable which is completely different. Why not make up both a straight and a rollover cable and see which one works? Incidentally, the rollover cables supplied by Cisco for use with their routers are usually flat - which easily distinguishes them from normal Ethernet cables - so, perhaps that is a pointer in your case too ...? -- Terry |
Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
I can't help you, I'm afraid, but I would be cautious about the use of the
term 'crossover cable' which, when combined with RJ45 connectors, would normally be interpreted as an Ethernet crossover cable in which two pairs out of the four are swapped over - see http://en.wikipedia.org/wiki/Ethernet_crossover_cable What you are describing is a rollover cable - see http://en.wikipedia.org/wiki/Rollover_cable which is completely different. Why not make up both a straight and a rollover cable and see which one works? I had thought of that, but as I understand it, the programmer takes its power from the compact headend, so wanted to avoid putting DC voltage on data lines for fear of damaging something at either the head end or the programmer. Regards, Stephen Incidentally, the rollover cables supplied by Cisco for use with their routers are usually flat - which easily distinguishes them from normal Ethernet cables - so, perhaps that is a pointer in your case too ...? -- Terry |
Calling people who've installed Televes aVANT 5'S with a PCT3.0 programmer.
With the lug of the RJ45 plug at the bottom and the cable entry towards
you, the Stock cable that comes with the Programmer is wired as follows from left to right and is the same on both plugs. White/Green Green/White White/Orange Blue/White White/Blue Orange/White White/Brown Brown/White Which is standard 568A standard (American). We tend to use 568B. http://www.ertyu.org/steven_nikkel/ethernetcables.html Regards Glenn www.glennmillar.plus.com www.FixMyAerial.com On 25/01/2011 20:14, Stephen wrote: Hi all, I am shortly taking possession of two Televes Avant 5 compact headends along with a PCT 3.0 programmer. The only fly in the ointment is that the cable that connects the prgorammer to the headends is missing.from the deal. From what I can gather, the connector sockets are RJ45 at both ends and that a 8 way flat IDC cable is used. I can make up my own cable using RJ45 connectors and a 8 way flat IDC cable. Given that the cable is a flat 8 way, and that the RJ45 connectors only allow you to put the cable in one of two possible ways, this narrows down what the pin to pin wiring is for this cable. This means that the cable will be a straight through from end to end e.g 1 to 1, 2 to 2, 3 to 3, 4 to 4, 5 to 5, 6 to 6, 7 to 7, 8 to 8. or a crossover cable end to end e.g 1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2, 8 to 1. The question is Which? I don't want to have to pay nearly 100 quid for a 2nd programmer just to have the elusive cable..... Looking forward to your reply, Stephen. |
Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
Thats fantastic, that means I can use a normal 2m ethernet straight through
patch cable as the pin colour is the same at both ends and this are 1 to 1 2 to 2 etc etc 7 to 7 and 8 to 8. The fact it has four twisted pairs instead of 8 flat untwisted wires should hopefully not matter. I thought I might have to make a Rollover YOST cable (With credit to Terry Casey for telling me about Rollover cables) and these are apparently used as cables to connect to the console ports of their network switches and these rollover cables are 1 to 8, 2 to 7 etc etc 7 to 2 and 8 to 1. Regards Stephen. "Glenn Millar" wrote in message ... With the lug of the RJ45 plug at the bottom and the cable entry towards you, the Stock cable that comes with the Programmer is wired as follows from left to right and is the same on both plugs. White/Green Green/White White/Orange Blue/White White/Blue Orange/White White/Brown Brown/White Which is standard 568A standard (American). We tend to use 568B. http://www.ertyu.org/steven_nikkel/ethernetcables.html Regards Glenn www.glennmillar.plus.com www.FixMyAerial.com On 25/01/2011 20:14, Stephen wrote: Hi all, I am shortly taking possession of two Televes Avant 5 compact headends along with a PCT 3.0 programmer. The only fly in the ointment is that the cable that connects the prgorammer to the headends is missing.from the deal. From what I can gather, the connector sockets are RJ45 at both ends and that a 8 way flat IDC cable is used. I can make up my own cable using RJ45 connectors and a 8 way flat IDC cable. Given that the cable is a flat 8 way, and that the RJ45 connectors only allow you to put the cable in one of two possible ways, this narrows down what the pin to pin wiring is for this cable. This means that the cable will be a straight through from end to end e.g 1 to 1, 2 to 2, 3 to 3, 4 to 4, 5 to 5, 6 to 6, 7 to 7, 8 to 8. or a crossover cable end to end e.g 1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2, 8 to 1. The question is Which? I don't want to have to pay nearly 100 quid for a 2nd programmer just to have the elusive cable..... Looking forward to your reply, Stephen. |
Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
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Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
Hi Terry,
Are these flat cable (as in console port cables) or 4 twisted pairs ethernet patch cables for connecting switches yto patch panels? I'd be interested in these 5m cables, I occasionally go to London via Euston train station, so perhaps I could pick up a few next time I'm in London? Regards, Stephen. "Terry Casey" wrote in message ... In article , says... With the lug of the RJ45 plug at the bottom and the cable entry towards you, the Stock cable that comes with the Programmer is wired as follows from left to right and is the same on both plugs. White/Green Green/White White/Orange Blue/White White/Blue Orange/White White/Brown Brown/White Which is standard 568A standard (American). We tend to use 568B. Provided both ends are the same, it makes no difference whether you use 568A or 568B. Obviously any standard ethernet patch cord (i.e: NOT crossover) will suit the OP's purpose. I've got loads here, 5m, brand new (supplied with Cisco routers but we didn't usually have patch panels in the same cabinet so all our cables were 'made to measure'.) If the OP is in SW Essex/NE London he's welcome to them - or anybody else who has a use for them - they keep turning up all over the place when I'm searching for something else! E-mail: k-type at ntlworld dot com -- Terry |
Calling people who've installed Televes aVANT 5'S with a PCT 3.0 programmer.
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