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<p class="MsoNormal" style="margin-bottom:7.5pt;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#333333">Based on the input that the O scale Custom Signals are Common Cathode, Wayne and I talked and I looked into signals
farther. On the Azatrax site, they sell a simple two light signal controller that shows LED polarity, but there is a line in the text that is interesting: "</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">All signals made by
Custom Signal Systems, NJ International and Details West are common anode." As it appears all of the O scale Custom Signals are wired Common Cathode (probably due to the Atlas Controller being designed by them and being a current source design), we need
to consider. </span><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
<br>
</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">I tried to write up what I think we know into our Current Status related to signals and I/O cards:</span><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
<br>
<br>
</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif;color:#333333"><o:p></o:p></span></p>
<ul type="disc">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Signals </span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">We believe that there are sufficient Custom Signals options to meet our needs</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">All Custom Signals O scale signal targets are wired R/Y/G with Common Cathode </span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">We do NOT know if these are changeable and the cost.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Common Cathode signal wiring requires a Current Source at the output (SMaxi, Smini, MRCS)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="disc">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">All current manufactured/available C/MRI Output cards are wired current sinking/common anode</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
</ul>
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">All other known/available O Scale signals are common anode (they were built for C/MRI)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">NJI and Details West O Scale Signals appear to be common anode</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Common Anode requires a Current Sink at the output pin.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo1;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">All C/MRI options require a hardware change from Current Sink to Current Source</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
</ul>
<ul type="disc">
<ul type="circle">
<ul type="square">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Chubb Outputs (Maxi-Node and S-MINI require a different output transistor</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">MRCS requires cutting a trace and solder jumpering another.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
</ul>
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Current Equipment/Usage</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">We have 10 wired Maxi-Node 32 port Output Cards (and 4 wired Input Cards)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Assuming 1 spare, that is 288 Current Sinking Outputs as wired - only for common anode.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level2 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">We have about 55 Turnouts to wire/support with I/O</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Turnouts can be wired to use current sinking or current sourcing output pins</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level3 lfo2;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Turnouts can use our current wired Maxi-Node I/O cards in Current Sinking mode (110 pins) without modificatoin</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
</ul>
</ul>
<p class="MsoNormal" style="margin-bottom:7.5pt;background:white"><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#333333">Questions/Issues</span><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
<br>
<br>
</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif;color:#333333"><o:p></o:p></span></p>
<ul type="disc">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo3;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Cards/Nodes - General configurations versus locations specific?</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level2 lfo3;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Managing sparing</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo3;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Is the 5V available in Current Sensing sufficient to run Tortoises/Switch Masters?</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
<p class="MsoNormal" style="margin-bottom:7.5pt;background:white"><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#333333">I think we need to do some quick analysis of our options before we proceed. I assume there are other optoins, but there are three I think we have:</span><span style="font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333"><br>
<br>
<br>
</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif;color:#333333"><o:p></o:p></span></p>
<ul type="disc">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Option 1: All-in on Custom Signals</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
<li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Buy all signals and targets from Custom Signals</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">All our signals are wired Common Cathode </span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Must rewire most or all of the current Maxi-Node Output cards (10)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Option 1 A: Rewire all 10 current Maxi-Node Output cards</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">5V output for turnout motors</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level3 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">MRCS has optional high voltage cards</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level3 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Chubb has a switch motor card</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level3 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">One off locations is a challenge</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Option 1B: Use half of the Maxi-Node output cards for turnouts as current sinking</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Can use 5 cards (4 active, 1 spare) as Current Sinking for the turnout motors.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Revise 5 cards to Current Sourcing and use 4/1 spare.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Rewire the other 5 cards for current sourcing</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level3 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Use 4 active/1 spare</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level3 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Maxi-node Signal Outputs would be 128 pins or 42 targets (21 signal stands out of 75 total at average)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Option 2 Use Custom Signals only for 3 targets and 10 existing 2 target signals</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Use Custom Signals for all 3 targets and 10 2 targets</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Use Current sinking for all signals except for above<br>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Support the Custom Signals common cathode with new current sourcing outputs cards (dedicated S-mini or cp/Node in the back locations only</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Have a spare component dedicated for these (one S-Mini or one 32 I/O MRCS card modified)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Use all of the current Maxi-Node Current Sinking cards for turnouts and other signals that are common anode/current sinking.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Option 3 Optimize for Maxi-Node - No re-wiring - Use app pins</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="circle">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Leave the maxi-node with 9 current sinking output cards for 288 output pins (1 spare)</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><ul type="square">
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">If we use the current Maxi-node output cards wired for current sinking for all turnouts, we can use 110 of 288 pins, leaving 178 for signals</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<span style="font-size:12.0pt;font-family:"Arial",sans-serif">For three color targets, that is 59 targets.</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">We rapidly define 59 targets worth of NJI or Details West we can buy/scour</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:#333333;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo4;background:white">
<span style="font-size:12.0pt;font-family:"Arial",sans-serif">Buy the rest from Custom Signals and wire all of the remote C/MRI panels as Current Sourcing for those signals</span><span style="font-size:10.5pt;font-family:"Helvetica Neue",serif"><o:p></o:p></span></li></ul>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Bradley Hand ITC",serif">Phil Edholm<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img width="412" height="160" style="width:4.2916in;height:1.6666in" id="Picture_x0020_1" src="cid:image001.png@01D694EE.D4529EC0"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="mailto:pedholm@pkeconsulting.com"><span style="color:#0563C1">pedholm@pkeconsulting.com</span></a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.pkeconsulting.com/"><span style="color:#0563C1">www.pkeconsulting.com</span></a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.ucstrategies.com/"><span style="color:#0563C1">www.ucstrategies.com</span></a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.webrtcworld.com/"><span style="color:#0563C1">www.webrtcworld.com</span></a><o:p></o:p></p>
<p class="MsoNormal">Follow me on Twitter at @PEdholm<o:p></o:p></p>
<p class="MsoNormal">Office 925-264-9420<o:p></o:p></p>
<p class="MsoNormal">Mobile 408-832-5618<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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