Model CFA-24 Transparent Cable Farm Automation Switch Reference Manual Page 29 of 78
Multiple Vectoring Groups (Configure MP Cables)
A Vectoring Group (VG) is used to identify a specific selection of channels for the purpose of setting independent
available line lengths for that selection. The available line lengths can be varied by including or excluding segments
independently from one VG to another. It is assumed all channels in a given Vectoring Group are connected to cables
between which there is crosstalk. In addition, a Vectoring Group may be designed as Colocated or Non-Colocated.
For example, the user may wish to attach two binders, each with four cables, to a CFA and have independent control of
the line lengths available for selection for each binder. In this example, the user would configure two Vectoring Groups
of four channels each.
Vectoring Groups apply to the entire CFA system; therefore, they are configured on the Controller or Standalone unit
only.
When using Multi-Pairs in the Coordinate Matrix, the CONFIGURE MP CABLES option must be used to configure
the Vectoring Groups.
List of Rules for defining a Vectoring Group:
•
A minimum of 2 channels is required for any VG.
•
All channels in the VG must contain at least one MP coordinate.
•
The channels within a VG are not required to be sequential.
•
The channels within a VG are not required to belong to the same CFA-24 unit.
The number of available Multiple Vectoring Groups is calculated by adding together all channels in the entire CFA
system that contain at least one MP coordinate. This number is then divided by two (a minimum of two channels are
required per VG) and, if necessary, rounded down to the next lowest whole number.
Once the number of VG’s is selected, each channel is assigned to a specific VG by the user. After each VG is established,
the user may include or exclude segments (if Non-Colocated) for any VG independently, allowing for different line
length settings per VG.
➢
The default number of Vectoring Groups is 1.
