Mediacell Inc WE2106A User Manual

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Version – 1.0 
 
 
Radio Interface 
 
A radio interface operates on a single channel.  Assuming the interface is 802.11g, the 
channel is numbered 1 to 14 and is spaced on a 5MHz comb. Channel 1 is centered at 
2.412GHz and Channel 14 is centered at 2.477GHz.  Each radio channel is approximately 
20MHz wide.  While it is generally believed that channels cannot operate “overlapped” this is 
not strictly true.  It may impact maximum throughput per radio on a theoretical basis, in a 
practical application with sectorized antenna distribution this is not a material concern.  But 
it is something to keep in mind when selecting channels and placing antennas.  Indeed, not 
all channels are allowed in all jurisdictions. 
 
Radios can be placed in “Fixed” mode (single antenna), disabling the Diversity functionality, 
or the ports will automatically switch between the two outputs searching for and 
communicating with other wireless clients.  Factory preset is Diversity (MIMO) mode.  Fixed 
Mode is usually used for single antenna point-to-point links where dual antennas are 
undesirable (but most point-to-point links will do better with diversity using dual antennas). 
 
 
Transport Interfaces (“Backhaul”) 
 
Each WirelessTap can be configured to use a number of different transport interfaces.  The 
two most common are HFC DOCSIS (an RF interface usually found in cable 
telecommunications networks), or standard 10/100TX Ethernet. 
 
 
Ethernet Transport 
 
Connecting to Ethernet backhaul transport is as easy as connecting an RJ45 Ethernet CAT5e 
type cable to a network (MDI).  Both 10Mbps and 100Mbps speeds are fully supported.  On 
cabinet mount WirelessTaps Ethernet is always available 
 
 
DOCSIS Transport 
 
If your WirelessTap has a DOCSIS 2.0 modem, there will be a 75Ω F-female port available.  
RF input is 0dBmV +/-10dB at the data carrier.  The interface will either be US format or EU 
format, but not both. 
 
Upstream carrier is capable of: 
QPSK 
+8 ~ +54 
S-CDMA 
+8 ~ +55
 
8/16QAM 
+8 ~ +53
 
32/64QAM 
+8 ~ +58
 
Strand Mount Platform Quick Start Guide 
 
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