[time-nuts] Tektronix TM500 extender cable ki
I have seen the Jamma kit (I will be using their edge connectors) and John's design. Their main problem is the hassle of wiring up 56 individual wires. Also that tends to be not all that reliable... wires tend to break at the solder joints. The board that I laid out has two 40 pin ribbon cable box headers on it (the layout is compatible with IDE headers that have pin 20 removed or blocked). All of the power pins on the TM500 bus use two conductors (plus Tek doubled or quadrupled most of the power pins). The other pins are signal level pin that don't carry much current. A single 28 ga ribbon wire of the appropriate length should be able to do an amp or so. There should not be any major problems running most modules. The same board is used on the mainframe side and module side of the cable (photo attached). A nice thing about the design is you can very easily replace the cables with new ones of any desired length. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Tektronix TM500 extender cable ki
Mark, that is a nice idea and much easier to construct. Count me in for two sets. Regards, Tom - Original Message - From: Mark Sims hol...@hotmail.com To: time-nuts@febo.com Sent: Monday, August 04, 2014 2:20 PM Subject: [time-nuts] Tektronix TM500 extender cable ki I have seen the Jamma kit (I will be using their edge connectors) and John's design. Their main problem is the hassle of wiring up 56 individual wires. Also that tends to be not all that reliable... wires tend to break at the solder joints. The board that I laid out has two 40 pin ribbon cable box headers on it (the layout is compatible with IDE headers that have pin 20 removed or blocked). All of the power pins on the TM500 bus use two conductors (plus Tek doubled or quadrupled most of the power pins). The other pins are signal level pin that don't carry much current. A single 28 ga ribbon wire of the appropriate length should be able to do an amp or so. There should not be any major problems running most modules. The same board is used on the mainframe side and module side of the cable (photo attached). A nice thing about the design is you can very easily replace the cables with new ones of any desired length. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Tektronix TM500 extender cable ki
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Re: [time-nuts] Tektronix TM500 extender cable ki
Yes indeed this is very interesting. I have a number of TM500 modules that need TLC every now and then. I may also want two. Regards Paul. WB8TSL On Mon, Aug 4, 2014 at 3:50 PM, Robert LaJeunesse lajeune...@mail.com wrote: ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Tektronix TM500 extender cable ki
I would like to get a pair too Alex KJ6UHN On 8/4/2014 5:15 PM, paul swed wrote: Yes indeed this is very interesting. I have a number of TM500 modules that need TLC every now and then. I may also want two. Regards Paul. WB8TSL On Mon, Aug 4, 2014 at 3:50 PM, Robert LaJeunesse lajeune...@mail.com wrote: ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
