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#1 2008-Nov-07 13:27:03

dpfeil
Member
Registered: 2008-Feb-02
Posts: 47

4x4 MIMO with warplab - clock cables

we were just in the process of moving radio cards from one node to another to make use of the new warplab demo.  However, we noticed that all of the mmcx (the small black clock cables) were all too short to connect a radio card in slot 4.  do you have any suggestions for part numbers for the connectors or lengths we should get these cables in?  I want to make sure they are they same type of cable to ensure the most accurate synchronization.  Thanks

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#2 2008-Nov-07 15:18:50

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: 4x4 MIMO with warplab - clock cables

The cables we use are RG-174U coax with right-angle MMCX-F jacks. We've bought them from RF Industries in the past. For radios in slots 1 and 4, a 4" cable works well. The lengths of these cables do not need to be matched across radios, since the various PLLs lock out-of-phase anyway. The sampling clock cables (the twisted pair ones) should be matched to keep things coherent.

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