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_files/sound/bss/london/manual/MAIN/Snapshot Object.html
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<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<meta name="generator" content="Adobe RoboHelp 9">
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<title>Snapshot Object</title>
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<body class="ns-0 ltr">
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<div id="globalWrapper">
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<div id="column-content">
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<div id="content">
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<h1 class="firstHeading">Snapshot Object</h1>
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<div id="bodyContent">
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<p><img src="Snapshot.jpg" alt="" width="118" height="217" border="2" class="hcp1"></p>
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<p><a name="Overview" id="Overview"></a></p>
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<h3>Overview</h3>
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<p>The Snapshot object gives a way of storing and recalling
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a set of logic values (a snapshot) whilst online. A Snapshot
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object can store a number of these snapshots, each of
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which can be stored and recalled at any time. Only one
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of the following inputs should be high at any one time:
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Store; Recall; Clear; Bypass. If more than one of these
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inputs is high at any one time, the object will be in
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an error condition during which time none of them will
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have any effect.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Store" id="Store"></a></p>
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<h3>Store</h3>
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<p>To store a snapshot, the data is placed on the data
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inputs, the snapshot number is placed on the snapshot
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select inputs and the Store input is taken high.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Recall" id="Recall"></a></p>
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<h3>Recall</h3>
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<p>Similarly, to recall a snapshot, the snapshot number
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is placed on the snapshot select inputs, and the Recall
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input is taken high. The object then places the stored
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data on the data output. As long as recall is kept high,
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any snapshots selected will immediately appear on the
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output.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Snapshot_Selection" id="Snapshot_Selection"></a></p>
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<h3>Snapshot Selection</h3>
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<p>The snapshot select inputs can be interpreted as priority
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or binary.</p>
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<p class="Preformatted">Priority Mode: the lowest active input specifies the number<br>
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Binary Mode:   all the inputs specify a binary number<br>
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</p>
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<p>So for example, if only priority inputs S3 and S5 were
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active (0001 0100), snapshot 3 would be selected.</p>
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<p>In binary, the same input 0001 0100, (B2 and B4 active)
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would be interpreted as binary, that is value 20, and
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because the first snapshot is stored at binary 0, is snapshot
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21.</p>
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<p>If set as binary, a pattern of 1010 for instance would
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store it as snapshot 6.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Clear" id="Clear"></a></p>
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<h3>Clear</h3>
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<p>Clear will set the stored snapshot value for the selected
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location to zero. The data outputs will remain unchanged.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Bypass" id="Bypass"></a></p>
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<h3>Bypass</h3>
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<p>To bypass the Snapshot object and pass data straight
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through from the data input to the data output, the Snapshot
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object can be put into bypass mode by setting the Bypass
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input high. This mode overrides the data that would be
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output by recall, although these actions still work internally.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Properties" id="Properties"></a></p>
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<h2>Properties</h2>
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<p><img src="Properties_Snapshot.jpg" alt="Image:Properties Snapshot.jpg" title="Image:Properties Snapshot.jpg" width="301" height="347" border="2" class="hcp1"></p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Logic_Inputs" id="Logic_Inputs"></a></p>
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<h3>Logic Inputs</h3>
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<p>Sets the number of logic inputs for the Snapshot function,
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selectable from 1 to 27. The number of logic outputs will
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automatically be set to the same.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Snapshot_Selection_Inputs" id="Snapshot_Selection_Inputs"></a></p>
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<h3>Snapshot Selection Inputs</h3>
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<p>Sets the number of inputs to be used for selecting a
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Snapshot to be recalled or stored. Depending on whether
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the inputs are configured as priority or binary will affect
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how many inputs are available.</p>
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<p class="Preformatted">Maximum selection inputs<br>
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Priority: (28 - Number of Logic Inputs)<br>
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Binary  : 8<br>
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</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Snapshot_Addressing" id="Snapshot_Addressing"></a></p>
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<h3>Snapshot Addressing</h3>
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<p>Sets the Snapshot selection to be Priority or Binary.</p>
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<p>When set to Priority, only the lowest active snapshot
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selection line selects the snapshot. The lowest input,
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S1 has the highest priority. Each input selects a single
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snapshot so 3 lines allows the storage of 3 snapshots.</p>
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<p>When set to Binary, the snapshot selection lines are
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interpreted as a binary number, so 3 lines allows the
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storage of 8 snapshots.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Clear_Outputs" id="Clear_Outputs"></a></p>
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<h3>Clear Outputs</h3>
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<p>When set to YES the outputs will be cleared when the
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stored snapshot for the selected location is cleared.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Snapshot_n" id="Snapshot_n"></a></p>
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<h3>Snapshot n</h3>
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<p>This is a list of the contents of each snapshot, which
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can be edited offline.</p>
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</div>
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</div>
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</div>
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</div>
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<p style="margin-bottom: 0;"> </p>
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</body>
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</html>
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