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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>HDHomeRun Tuner Tester</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<header>
<h1>HDHomeRun Tuner Tester</h1>
<h2>Directions</h2>
<ol>
<li>Connect tuners to seperate channela.</li>
<li>Use the Signal Strength for a rough idea of direction, but align the antenna for the highest Signal Quality, ignoring Signal Strength.</li>
<ul>
<li>When aimed correctly, Symbol Quality will show 100%, indicating no errors in the output.</li>
<li>A signal strength of 90% or higher is recommended for QAM operation, 80% minimum.</li>
<li>A signal strength of 80% or higher is recommended for OTA operation, 60% minimum.</li>
</ul>
</p>
<p>Note: Full settings page accessible at <a href="http://hdhomerun.local">hdhomerun.local</a></p>
</header>
<section style="width: 100%; display: flow-root;">
<div style="display: block; width: 380px; float: left;">
<h2>Tuner 0</h2>
<iframe src="http://hdhomerun.local/tuners.html?page=tuner0" width="375px" height="470px" id="tuner0"></iframe>
</div>
<div style="display: block; width: 380px; float: left;">
<h2>Tuner 1</h2>
<iframe src="http://hdhomerun.local/tuners.html?page=tuner1" width="375px" height="470px" id="tuner1"></iframe>
</div>
<div style="display: block; width: 380px; float: left;">
<h2>Tuner 2</h2>
<iframe src="http://hdhomerun.local/tuners.html?page=tuner2" width="375px" height="470px" id="tuner2"></iframe>
</div>
<div style="display: block; width: 380px; float: left;">
<h2>Tuner 3</h2>
<iframe src="http://hdhomerun.local/tuners.html?page=tuner3" width="375px" height="470px" id="tuner3"></iframe>
</div>
</section>
<footer style="width: 100%;">
<article>
<h3>
There are three percentages reported by the HDHomeRun
</h3>
<p>
<strong>Signal Strength (ss)</strong>
</p>
<ul>
<li><div> raw power level as measured by the receiver</div>
</li>
</ul>
<p>
<strong>Signal Quality (snq)</strong>
</p>
<ul>
<li><div> how clearly defined the digital data is</div>
</li>
</ul>
<p>
<strong>Symbol Quality (seq)</strong>
</p>
<ul>
<li><div> Amount of correct or corrected data over the last second</div>
</li>
</ul>
<p>
The above definitions can be confusing, so a much simpler definition is to imagine listening to the radio:
</p>
<ul>
<li><div> Signal Strength represents the volume</div>
</li>
<li><div> Signal Quality represents how clearly you can hear the lyrics</div>
</li>
<li><div> Symbol Quality indicates the percentage of the lyrics you could hear or guess correctly</div>
</li>
</ul>
<p>
As it turns out, Signal Strength is somewhat irrelevant; if your antenna isn't pointed properly, it doesn't matter how loud you turn up the volume, the static will prevent you from hearing the lyrics correctly. Similarly, amplifying a weak HDTV signal can result in a high signal strength but too much noise to decode the digital data correctly.
</p>
<p>
Use the Signal Strength for a rough idea of direction, but align the antenna for the highest Signal Quality, ignoring Signal Strength. When aimed correctly, Symbol Quality will show 100%, indicating no errors in the output. Splitters and amplifiers can introduce noise which will lower the Signal Quality, even if the Signal Strength increases.
</p>
<p>
<a href="https://info.hdhomerun.com/info/troubleshooting:signal_strength_quality">Source</a>
</p>
</article>
<article>
<p>
To split a signal more than 4 ways a distribution amplifier is recommended.<br>
<a href="https://info.hdhomerun.com/info/troubleshooting:cables_terminators_splitters">Source</a>
</p>
</article>
</footer>
<script>
setInterval(function () {
document.getElementById('tuner0').src = document.getElementById('tuner0').src;
document.getElementById('tuner1').src = document.getElementById('tuner1').src;
document.getElementById('tuner2').src = document.getElementById('tuner2').src;
document.getElementById('tuner3').src = document.getElementById('tuner3').src;
}, 1000);
</script>
</body>
</html>