ProSoft Technology RLXIB-IHA-A - Manual (Page 49)

RLXIB-IHA ♦ 802.11a Radio Configuration / Diagnostic Utility
RadioLinx® 802.11a Industrial Hotspot User Manual
ProSoft Technology, Inc. Page 49 of 123
July 25, 2013
Field Description
Preferred Parent With the preferred parent setting the IH radio will select its parent from
a list of possible parents specified by the user. The user can list up to
eight radios to choose from.

Best in List
When Best in List is selected the IH will select its parent using the
"Automatic Parent Selection" algorithm, but it will limit the selection
to the list of radios in the list. Therefore, the radio in the list with
the lowest cost according to the algorithm will be chosen as its
parent.
 Follow List Priority
When Follow List Priority is chosen the IH will select its parent
from the list giving preference to the 1st entry followed by the 2nd
entry and so on.
Parent Selection Parameters
Signal Strength Threshold When the signal from a parent reaches a high enough value, a stronger
signal will not improve the quality of the link any further. For signals
that are above that threshold, only fewer hops from the Master give
preference. You can adjust that threshold here.
Rate to Parent The default setting is auto which allows the radio to select the best rate
to use to the parent radio, and adapt over time. You might specify a
fixed rate rather than auto for example if the link to the parent has a low
signal strength in which case fixing a lower rate can improve
performance. The actual rate used between this radio and its parent is
the lower value of this setting and the Max Data Rate setting in the
parent (see Max Data Rate). So use these two controls in conjunction if
desired to tailor the rate of each parent link.
Save Saves your changes and updates the radio configuration.
Cancel Discards your changes without updating the radio configuration.
When you save a selection and return to the Radio Network Settings panel,
notice that your selection is indicated under the Parent Link button.
The Automatic Parent Selection algorithm uses a calculation to create a cost for
each possible parent radio that it detects. The following graph describes how the
cost is calculated when the signal strength threshold is set to -60 dBm.