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<div class="document" id="uhd-usrp-b2x0-series-device-manual">
<h1 class="title">UHD - USRP-B2x0 Series Device Manual</h1>
<div class="contents topic" id="table-of-contents">
<p class="topic-title first">Table of Contents</p>
<ul class="simple">
<li><a class="reference internal" href="#comparative-features-list-b200" id="id1">Comparative features list - B200</a></li>
<li><a class="reference internal" href="#specify-a-non-standard-image" id="id2">Specify a Non-standard Image</a></li>
<li><a class="reference internal" href="#changing-the-master-clock-rate" id="id3">Changing the Master Clock Rate</a></li>
<li><a class="reference internal" href="#rf-frontend-notes" id="id4">RF Frontend Notes</a><ul>
<li><a class="reference internal" href="#frontend-tuning" id="id5">Frontend tuning</a></li>
<li><a class="reference internal" href="#frontend-gain" id="id6">Frontend gain</a></li>
</ul>
</li>
<li><a class="reference internal" href="#hardware-reference" id="id7">Hardware Reference</a><ul>
<li><a class="reference internal" href="#led-indicators" id="id8">LED Indicators</a></li>
<li><a class="reference internal" href="#external-connections" id="id9">External Connections</a></li>
<li><a class="reference internal" href="#on-board-connectors-and-switches" id="id10">On-Board Connectors and Switches</a></li>
</ul>
</li>
</ul>
</div>
<div class="section" id="comparative-features-list-b200">
<h1>Comparative features list - B200</h1>
<dl class="docutils">
<dt><strong>Hardware Capabilities:</strong></dt>
<dd><ul class="first last simple">
<li>Integrated RF frontend (70 MHz - 6 GHz)</li>
<li>External PPS reference input</li>
<li>External 10 MHz reference input</li>
<li>Configurable clock rate</li>
<li>Internal GPSDO option</li>
<li>B210 Only:<ul>
<li>MICTOR Debug Connector</li>
<li>JTAG Connector</li>
</ul>
</li>
</ul>
</dd>
<dt><strong>FPGA Capabilities:</strong></dt>
<dd><ul class="first last simple">
<li>Timed commands in FPGA</li>
<li>Timed sampling in FPGA</li>
</ul>
</dd>
</dl>
</div>
<div class="section" id="specify-a-non-standard-image">
<h1>Specify a Non-standard Image</h1>
<p>UHD software will automatically select the USRP B2X0 images from the installed images package.
The image selection can be overridden with the <strong>fpga</strong> and <strong>fw</strong> device address parameters.</p>
<p>Example device address string representations to specify non-standard images:</p>
<pre class="literal-block">
fpga=usrp_b200_fpga.bin
-- OR --
fw=usrp_b200_fw.hex
</pre>
</div>
<div class="section" id="changing-the-master-clock-rate">
<h1>Changing the Master Clock Rate</h1>
<p>The master clock rate feeds the RF frontends and the DSP chains.
Users may select non-default clock rates to acheive integer decimations or interpolations in the DSP chains.
The default master clock rate defaults to 32 MHz, but can be set to any rate between 5 MHz and 61.44 MHz.</p>
<p>The user can set the master clock rate through the usrp API call set_master_clock_rate(),
or the clock rate can be set through the device arguments, which many applications take:</p>
<pre class="literal-block">
uhd_usrp_probe --args="master_clock_rate=52e6"
</pre>
</div>
<div class="section" id="rf-frontend-notes">
<h1>RF Frontend Notes</h1>
<p>The B200 features and integrated RF frontend.</p>
<div class="section" id="frontend-tuning">
<h2>Frontend tuning</h2>
<p>The RF frontend has individually tunable receive and transmit chains.
On the B200, there is one transmit and one receive RF frontend.
On the B210, both transmit and receive can be used in a MIMO configuration.
For the MIMO case, both receive frontends share the RX LO,
and both transmit frontends share the TX LO.
Each LO is tunable between 50 MHz and 6 GHz.</p>
</div>
<div class="section" id="frontend-gain">
<h2>Frontend gain</h2>
<p>All frontends have individual analog gain controls.
The receive frontends have 73 dB of available gain;
and the transmit frontends have 89.5 dB of available gain.
Gain settings are application specific,
but it is recommended that users consider using at least
half of the available gain to get reasonable dynamic range.</p>
</div>
</div>
<div class="section" id="hardware-reference">
<h1>Hardware Reference</h1>
<div class="section" id="led-indicators">
<h2>LED Indicators</h2>
<p>Below is a table of the LED indicators and their meanings:</p>
<table border="1" class="docutils">
<colgroup>
<col width="16%" />
<col width="25%" />
<col width="59%" />
</colgroup>
<thead valign="bottom">
<tr><th class="head">Component ID</th>
<th class="head">Description</th>
<th class="head">Details</th>
</tr>
</thead>
<tbody valign="top">
<tr><td>LED600</td>
<td>Power Indicator</td>
<td><div class="first last line-block">
<div class="line">off = no power applied</div>
<div class="line">red = power applied (external or USB)</div>
</div>
</td>
</tr>
<tr><td>LED800</td>
<td>Channel 2 RX2 Activity</td>
<td><div class="first last line-block">
<div class="line">off = no activity</div>
<div class="line">green = receiving</div>
</div>
</td>
</tr>
<tr><td>LED801</td>
<td>Channel 2 TX/RX Activity</td>
<td><div class="first last line-block">
<div class="line">off = no activity</div>
<div class="line">green = receiving</div>
<div class="line">red = transmitting</div>
<div class="line">orange = switching between transmitting and receiving</div>
</div>
</td>
</tr>
<tr><td>LED802</td>
<td>Channel 1 TX/RX Activity</td>
<td><div class="first last line-block">
<div class="line">off = no activity</div>
<div class="line">green = receiving</div>
<div class="line">red = transmitting</div>
<div class="line">orange = switching between transmitting and receiving</div>
</div>
</td>
</tr>
<tr><td>LED803</td>
<td>Channel 1 RX2 Activity</td>
<td><div class="first last line-block">
<div class="line">off = no activity</div>
<div class="line">green = receiving</div>
</div>
</td>
</tr>
<tr><td>LED100</td>
<td>GPS lock indicator</td>
<td><div class="first last line-block">
<div class="line">off = no lock</div>
<div class="line">green = lock</div>
</div>
</td>
</tr>
</tbody>
</table>
<p>TX LED indicators are on when transimitting data and off when no samples are available to transmit. RX LED indicators are on when sending samples to the host and off when unable to do so. This means that TX/RX activity LED indicators will blink off in a temporary transmit underflow or receive overflow condition, indicating that the host is not sending or receiving samples fast enough. The host will be notified of the condition and output a "U" or "O" as well.</p>
</div>
<div class="section" id="external-connections">
<h2>External Connections</h2>
<p>Below is a table showing the external connections and respective power information:</p>
<table border="1" class="docutils">
<colgroup>
<col width="16%" />
<col width="25%" />
<col width="59%" />
</colgroup>
<thead valign="bottom">
<tr><th class="head">Component ID</th>
<th class="head">Description</th>
<th class="head">Details</th>
</tr>
</thead>
<tbody valign="top">
<tr><td>J601</td>
<td>External Power</td>
<td><div class="first last line-block">
<div class="line">6 V</div>
<div class="line">3 A</div>
</div>
</td>
</tr>
<tr><td>J701</td>
<td>USB Connector</td>
<td><div class="first last line-block">
<div class="line">USB 3.0</div>
</div>
</td>
</tr>
<tr><td>J104</td>
<td>External PPS Input</td>
<td><div class="first last line-block">
<div class="line">1.8 V - 5 V</div>
</div>
</td>
</tr>
<tr><td>J101</td>
<td>GPS Antenna</td>
<td><div class="first last line-block">
<div class="line">GPSDO will supply nominal voltage to antenna.</div>
</div>
</td>
</tr>
<tr><td>J100</td>
<td>External 10 MHz Input</td>
<td><div class="first last line-block">
<div class="line">+15 dBm max</div>
</div>
</td>
</tr>
<tr><td>J800</td>
<td>RF B: TX/RX</td>
<td><div class="first last line-block">
<div class="line">TX power +20dBm max</div>
<div class="line">RX power -15dBm max</div>
</div>
</td>
</tr>
<tr><td>J802</td>
<td>RF B: RX2</td>
<td><div class="first last line-block">
<div class="line">RX power -15dBm max</div>
</div>
</td>
</tr>
<tr><td>J803</td>
<td>RF A: RX2</td>
<td><div class="first last line-block">
<div class="line">RX power -15dBm max</div>
</div>
</td>
</tr>
<tr><td>J801</td>
<td>RF A: TX/RX</td>
<td><div class="first last line-block">
<div class="line">TX power +20dBm max</div>
<div class="line">RX power -15dBm max</div>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="on-board-connectors-and-switches">
<h2>On-Board Connectors and Switches</h2>
<p>Below is a table showing the on-board connectors and switches:</p>
<table border="1" class="docutils">
<colgroup>
<col width="16%" />
<col width="25%" />
<col width="59%" />
</colgroup>
<thead valign="bottom">
<tr><th class="head">Component ID</th>
<th class="head">Description</th>
<th class="head">Details</th>
</tr>
</thead>
<tbody valign="top">
<tr><td>J502*</td>
<td>Mictor Connector</td>
<td><div class="first last line-block">
<div class="line">Interface to FPGA for I/O and inspection.</div>
</div>
</td>
</tr>
<tr><td>J503*</td>
<td>JTAG Header</td>
<td><div class="first last line-block">
<div class="line">Interface to FPGA for programming and debugging.</div>
</div>
</td>
</tr>
<tr><td>S700</td>
<td>FX3 Hard Reset Switch</td>
<td> </td>
</tr>
</tbody>
</table>
<p>* B210 Only</p>
</div>
</div>
</div>
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Generated on: 2014-10-15 11:47 UTC.
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