<?xml version="1.0"?> <!-- ################################################### ##USRP Simple Source ################################################### --> <block> <name>USRP Source</name> <key>usrp_simple_source_x</key> <import>from grc_gnuradio import usrp as grc_usrp</import> <make>grc_usrp.simple_source_$(type.fcn)(which=$which, side=$side, rx_ant=$rx_ant#if $hb_filters() then ', no_hb=True' else ''#) #if $format() self.$(id).set_format(width=$format.width, shift=$format.shift) #end if self.$(id).set_decim_rate($decimation) self.$(id).set_frequency($frequency, verbose=True#slurp #if $lo_offset() != float('inf') , lo_offset=$lo_offset#slurp #end if ) self.$(id).set_gain($gain)</make> <callback>set_decim_rate($decimation)</callback> <callback>set_frequency($frequency#slurp #if $lo_offset() != float('inf') , lo_offset=$lo_offset#slurp #end if )</callback> <callback>set_gain($gain)</callback> <param> <name>Output Type</name> <key>type</key> <type>enum</type> <option> <name>Complex</name> <key>complex</key> <opt>fcn:c</opt> </option> <option> <name>Short</name> <key>short</key> <opt>fcn:s</opt> </option> </param> <param> <name>Format</name> <key>format</key> <value></value> <type>enum</type> <hide>#if $format() then '' else 'part'#</hide> <option> <name>16 Bits (Default)</name> <key></key> <opt>width:16</opt> <opt>shift:0</opt> </option> <option> <name>8 Bits, Shift 8</name> <key>w8_s8</key> <opt>width:8</opt> <opt>shift:8</opt> </option> </param> <param> <name>Unit Number</name> <key>which</key> <value>0</value> <type>int</type> </param> <param> <name>Decimation</name> <key>decimation</key> <type>int</type> </param> <param> <name>Frequency (Hz)</name> <key>frequency</key> <type>real</type> </param> <param> <name>LO Offset (Hz)</name> <key>lo_offset</key> <value>float('inf')</value> <type>real</type> <hide>#if $lo_offset() == float('inf') then 'part' else 'none'#</hide> <option> <name>Default</name> <key>float('inf')</key> </option> </param> <param> <name>Gain (dB)</name> <key>gain</key> <value>0</value> <type>real</type> </param> <param> <name>Side</name> <key>side</key> <value>A</value> <type>string</type> <option> <name>A</name> <key>A</key> </option> <option> <name>B</name> <key>B</key> </option> </param> <param> <name>RX Antenna</name> <key>rx_ant</key> <value>RXA</value> <type>string</type> <option> <name>RXA</name> <key>RXA</key> </option> <option> <name>RXB</name> <key>RXB</key> </option> <option> <name>RXAB</name> <key>RXAB</key> </option> <option> <name>TX/RX</name> <key>TX/RX</key> </option> <option> <name>RX2</name> <key>RX2</key> </option> </param> <param> <name>Halfband Filters</name> <key>hb_filters</key> <value></value> <type>enum</type> <hide>#if $hb_filters() then 'none' else 'part'#</hide> <option> <name>Enable</name> <key></key> </option> <option> <name>Disable</name> <key>1</key> </option> </param> <source> <name>out</name> <type>$type</type> </source> <doc> The USRP source outputs 64 Megasamples per second / decimation. The "Receive Antenna Setting" selects one of the SMA connectors as the data source. \ Flex RF boards use the "TX/RX" and "RX2" settings. \ Basic RX and LFRX use the "RXA", "RXB", and "RXAB" settings. \ All other boards use the "RXA" setting. With the format set to 8 bits and the halfband filters disabled, the USRP can acheive a decimation rate of 4. \ Disabling the halfband filters requires a special USRP firmware without halfband filters or TX paths. \ For this reason, the USRP cannot transmit with the halfband filters disabled. </doc> </block>