82 lines
3.4 KiB
Plaintext
82 lines
3.4 KiB
Plaintext
<!DOCTYPE html>
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<meta name="generator" content="HTML Tidy for HTML5 for Apple macOS version 5.8.0">
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<!-- Copyright Bob Jacobsen 2008 -->
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<title>JMRI: RPS Receiver Control</title><!--#include virtual="/help/en/parts/Style.shtml" -->
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<div id="mBody">
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<div id="mainContent" class="no-sidebar">
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<h1>JMRI: RPS Receiver Control</h1>
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<a href="../../../../../html/hardware/rps/images/ReceiverControl.gif"><img src=
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"../../../../../html/hardware/rps/images/ReceiverControl.gif" height="120" width="292" alt=
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"RPS Receiver Control window" class="floatRight"></a><br>
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The RPS Receiver Control window lets you update and examine the <a href=
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"../../../../../html/hardware/rps/index.shtml">RPS system</a>'s information about where its
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receivers are located.
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<p>Usually the RPS system will detect how many receivers it has and set up the table with the
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right number of rows. You can change that by changing the number of receivers in the text bus
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and clicking "Set".</p>
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<p>Once you have the right number of receivers defined, enter each one's X, Y and Z
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coordinates in the table.</p>
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<p>There's also a checkbox for each receiver that controls whether it will be used in
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position calculations (if checked) or ignored (not checked).</p>
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<p>The values "Min Time" and "Max Time" columns are used to decide if the receivers time
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measurement should be used in a particular calculation. These can usually be left at their
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default values of -1 and 99999 respectively, in which case the program will always attempt to
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use the receivers measurement. If you're having trouble, for example with echoes that make
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very long measurements (high time values) inaccurate, you can set a high limit, above which
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the measurement won't be used. You can similarly set a low limit if very small time
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measurements (short distances or certain forms of interference) turn out to be
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inaccurate.</p>
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<p>To help determine those limits, the most recent time measurement for each receiver is
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shown in the "Last Time" column of the table.</p>
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<p>By default, the RPS system measures position in inches and time in microseconds. If you'd
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prefer to use some other distance unit, such as meters or feet, you change the number used
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for the speed of sound. Typical values are:</p>
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<dl>
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<dt>Inches</dt>
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<dd>0.01345</dd>
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<dt>Feet</dt>
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<dd>0.00112</dd>
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<dt>Meters</dt>
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<dd>0.000345</dd>
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<dt>cm</dt>
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<dd>0.0345</dd>
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</dl>
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If you change this value, be sure to click the "Set" box.
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<p>The "offset" value should usually be left unchanged.</p>
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<p>To save the values as the new defaults, which will be used the next time the program is
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started, click the "Set Defaults" button.</p>
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<p>To save the values in a separate file, click "Store...", then select where you want to put
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the file and what you want to call it.</p>
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<p>To load values from a previously stored file, click "Load..." and select the file.</p>
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</div>
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<script src="/js/help.js"></script>
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