Changes between Version 103 and Version 104 of WiMAXInteg


Ignore:
Timestamp:
02/12/10 16:15:37 (12 years ago)
Author:
hmussman@bbn.com
Comment:

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  • WiMAXInteg

    v103 v104  
    178178=== 6.2  NEC Hardware  ===
    179179
    180 Fig 1-2b)  NEC BTS, ODU and Antenna  [[BR]]
     180Fig 1-2b)  NEC BTS IDU, ODU and Antenna  [[BR]]
    181181[[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]]  [[BR]]
    182182
     
    184184
    185185
    186 Both ODU and IDU are, as are most other telecom systems, powered by the -48VDC power source. There are two possible configurations:
    187 
    188  * Single unit -48 VDC power supply that is powering both ODU and IDU
    189  * Two independent -48 VDC power supplies one for each of the units
    190 
    191 The second solution has an advantage in deployments for which 110V AC circuit is already available at the chosen outdoor installation location.
     186Both the NEC ODU and IDU are, as telecom systems, powered by a -48VDC power source.
     187
     188It is recommended that two separate -48VDC power supplies, with 110VAC feeds, be provided, one for each unit.  This avoids the need for a -48VDC distribution panel, with circuit breakers, and yet still allows individual control for each unit.  Furthermore, it allows the power supply for the ODU to be mounted in a weathertight box on the roof, if that is preferred to mounting with the indoor testbed equipment.[[BR]]
     189 
     190Power feed connections are outlined in the [http://groups.geni.net/geni/attachment/wiki/WiMAXInteg/CampusInstallation/BS_INSTALLATION.pdf NEC Installation Manual for Base Station (IMN:BS)][[BR]]
     191
     192The recommended configuration for the ODU is:[[BR]]
     193 ODU mounted outdoors, on roof, with maximum of 4A required at -48VDC[[BR]]
     194 Cable, two conductors, suggested 12AWG, rated for outdoor use, with [http://www.hirose-connectors.com/connectors/H205SeriesGaiyou.aspx?c1=JR&c3=3 Hirose JIS Round Connector, Series JR25WP-4S], 25 mm shell size, waterproof plug with 4 soldered socket contacts. [[BR]]
     195 [http://www.meanwell.com/search/SP-200/SP-200-spec.pdf Mean Well SP-200-48 Single Output Switching Power Supply, 110VAC input,  -48VDC output, rated 4.2A or 202.5W ][[BR]]
     196
     197 
     198 The second solution has an advantage in deployments for which 110V AC circuit is already available at the chosen outdoor installation location.
    192199Rated power requirements are 8.4A for IDU (in full configuration with all 3 sector boards) and 4A for ODU.
    193200 
     
    198205  * Two units: 
    199206      * [http://www.meanwell.com/search/SP-320/SP-320-spec.pdf Mean Well SP-320-48 Single Output Switching Power Supplies 48V 6.7A 321.6W]
    200       * [http://www.meanwell.com/search/SP-200/SP-200-spec.pdf Mean Well SP-200-48 Single Output Switching Power Supplies 48V 4.2A 202.5W ]
    201 
    202 
    203 Power Feed Connections
    204 
    205 As outlined in the [http://groups.geni.net/geni/attachment/wiki/WiMAXInteg/CampusInstallation/BS_INSTALLATION.pdf NEC Installation Manual for Base Station (IMN:BS)] the two unit are using the following:
     207      *
     208
     209
     210
    206211
    207212  * IDU power feed is based on [http://www.tycoelectronics.com/default.aspx Tyco Electronics / AMP] Dynamic Series D-5000 power connectors with [http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&BML=&LG=1&PN=3-917807-2&PID=58341 plug housing] with 4 [http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&PN=316041-2&I=13 rectangular connectors] (two for each of the positive and negative DC power rails). Suggested wire is 10AWG.
    208   * ODU power feed is based on [http://www.hirose-connectors.com/ Hirose] JIS Round Connector Series soldering connectors  [http://www.hirose-connectors.com/connectors/H205SeriesGaiyou.aspx?c1=JR&c3=3 JR25WP-4S] (25 mm shell size, waterproof plug with 4 soldered socket contacts). Suggested wire is 12AWG.
     213  * ODU power feed is based on [http://www.hirose-connectors.com/ Suggested wire is 12AWG.
    209214
    210215BOM