Serge NOEL
200 lines
9.2 KiB
Plaintext
200 lines
9.2 KiB
Plaintext
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<title>Comprehensive Programmer - Speed Control Pane</title>
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<h1 id="Top">DecoderPro® Comprehensive Programmer</h1>
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<h2>The Speed Table Pane</h2>
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<div class="dp-right">
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<p><a href="Comp_Speed.shtml">Previous |</a> <a href="Comp_FMap.shtml">Next</a></p>
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<p><a href="index.shtml#Advanced%20Programmer">Back to Index</a>
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</p>
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</div>
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<hr>
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<p>The <strong>Speed Table</strong> allows you to fine-tune the throttle response of your
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locomotive. You might opt to match all of your locomotives so they run at the same speed for
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the same throttle setting, or you might want to set the table up so that your locomotive runs
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at the actual scale speed indicated by the throttle. Or maybe you have someone in your
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operating group that likes to switch the yard at Mach 2.5, and you want to slow them down a
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bit. There are a lot of ways to use this feature. (This feature may vary by manufacturer and
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decoder series)</p>
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<p>You now have the option of using <strong>Speed Table</strong> (this pane) which if
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selected and written to the decoder will replace the <a href="Comp_Speed.shtml"><strong>Basic
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Speed Control</strong></a> to set your locomotive's speed control mode. Which ever one you
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select last and write to your decoder will be the method used for speed control. To select
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the use of speed tables, the <strong>Use Table</strong> radio button is selected at the top
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of the pane, and in the case of Soundtraxx and QSI decoders, the drop down selection box must
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be used. See the discussion at the end of this section for an example.</p>
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<p>Not all decoders allow speed table programming and some are limited to fixed curves,
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usually selected by a drop-down list.</p>
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<p>The default speed table for most decoders is a straight line from zero on the left to
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maximum on the right. The <strong><span class="textbutton">Force Straight</span></strong>
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button below the table duplicates that in the table..</p>
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<h1 class="dp-ctr"><img style="width: 799px; height: 697px;" src=
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"images/Speed_Table_Straight.png" alt="speed table">
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</h1>
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<p class="dp-ctr"><strong>Straight Line Speed Curve</strong>
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</p>
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<p>As you can see, you have both numbers and sliders to work with. Changing either a number
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or slider will make the other change to match it. If you are CV inquisitive, you can use the
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tool tip to advantage. By hovering over any of the sliders, the tool tip will reveal the CV
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to which you are pointing .</p>
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<p>The <span class="textbutton">Match ends</span> button
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will also result in a straight-line graph, but you can offset the beginning and end by any
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amount you wish. The first and last steps are used to set to minimum and maximum values for
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the straight line. The function will then draw a straight line between those two end points.
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Below is an example of the result.</p>
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<h1><img src="images/Speed_Table_Match.png" alt="speed table match" height="315" width="914">
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</h1>
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<p>Now if you've used DecoderPro in the past, you're probably wondering what those little
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boxes at the bottom of each slider are used for. Well, they're difficult to explain, but easy
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to use. They basically allow you to set a slider to control every slider in columns to its
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left as well as to its right. If you click two of the boxes and then move one of those
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sliders you'll see that they are linked to the sliders between them. Points to the right
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never are higher than the slider being moved, and the points to the left are never lower that
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the slider being moved. This "always increasing left to right" is normally the way the
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sliders worked, but now the ones in between the check are linked. If the slider is lowered
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and then raised the straight line is drawn between the column checked to the right and the
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column that the slider is controlling. It's difficult to describe, but try it and you'll
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see.</p>
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<p><br>
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What could that possibly be used for, you ask? Well, many decoders (like the Soundtraxx
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Tsunami in this example) do not support V-start, V-mid and V-max. So, if you are trying to
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use the simplified method of speed matching locos, these decoders won't support it. Well now
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you have a way. Check the left-hand, right-hand and middle columns. Set the left-hand column
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to V-start, the right-hand to V-max and then slide the middle slider up and down until you
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get the V-mid that you want. Now all you have to do is write this speed table to the loco and
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you've accomplished what you wanted to do, but the decoder manufacturer didn't provide
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for.</p>
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<h1><img src="images/Speed_Table_SpeedMatch.png" alt="Speed Match" height="527" width="922">
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</h1>
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<p class="dp-ctr"><strong>Substitute for Quick Speed Matching</strong>
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</p>
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<p>If you want to set up a loco for switching you can set a start speed that is the same for
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the first portion of the throttle revolution and lower the top speed for use in the yard as
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shown below:</p>
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<h1><img src="images/Speed_Table_Constant.png" alt="Speed Table - Constant Ratio Curve"
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height="270" width="800">
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</h1>
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<p class="dp-ctr"><strong>Switcher Speed Curve</strong>
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</p>
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<p>if you don't desire a strait-line response curve there are other options available. The
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Constant ratio curve gives you a response that increases slowly in the low end and rapidly at
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high throttle. This function will also draw the curve between preset end points.</p>
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<h1><img src="images/Speed_Table_Switcher.png" alt="switcher" height="335" width="807">
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</h1>
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<p class="dp-ctr"><strong>Constant Ratio Curve</strong>
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</p>
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<p>The <strong>Log curve</strong> reverses this response, giving you a logarithmic response
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curve with high acceleration at low speeds, but topping out quickly. It will also draw the
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curve between preset end points.</p>
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<h1><img src="images/Speed_Table_Log.png" alt="log" height="345" width="851">
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</h1>
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<p class="dp-ctr"><strong>Logarithmic Speed Curve</strong>
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</p>
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<p class="cp-ctr">
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</p>
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<p>The <span class="textbutton">Shift left</span> button moves the entire
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speed table to the left one space with each click on the button. The example below shows a
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linear 0-255 speed table that has been <strong>Shifted left</strong> three times.</p>
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<h1><img src="images/Speed_Table_ShiftLeft.png" alt="shift left" height="369" width="840">
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</h1>
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<p class="dp-ctr"><strong>Curve Shifted Left</strong>
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</p>
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<p>The <span class="textbutton">Shft right</span> button moves the entire
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speed table to the right one space with each click on the button. The example below shows a
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linear 0-255 speed table that has been <strong>Shifted right</strong> three times.</p>
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<h1><img src="images/Speed_Table_ShiftRight.png" alt="shift right" height="331" width="824">
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</h1>
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<p class="dp-ctr"><strong>Curve Shifted Right</strong>
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</p>
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<p>Of course, you can enter the numbers individually or move the sliders one at a time to
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create your own fully customized speed table. To aid you with setting the individual values,
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the slider value is shown at the top of each slider. Also, by hovering the mouse at a slider
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column the number of the CV being entered will be revealed.</p>
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<p>One very important thing to remember: <span class="ACCENT"><strong>No matter how pretty
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your speed table looks, it has absolutely no effect on the locomotive unless you write it to
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the decoder!</strong></span></p>
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<p>And this point is especially pertinent with the QSI and Soundtraxx Tsunami decoders,
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because they have a separate drop down box like the QSI box below. They require that you
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select the <strong>user defined</strong> speed table entry in this box or your table will not
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be written to the decoder. Interestingly, Tsunami puts the selection at the bottom of the
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list making it very easy to miss.</p>
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<p class="dp-ctr"><img src="images/Speed_Table_QSI.png" alt="QSI speed table" height="308"
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width="799">
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</p>
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<hr>
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<div class="dp-right">
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<p><a href="Comp_FMap.shtml"></a> <a href="Comp_Speed.shtml">Previous |</a> <a href=
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"Comp_FMap.shtml">Next</a></p>
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<p><a href="index.shtml#Advanced%20Programmer">Back to Index</a>
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</p>
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