User's Manual

58 Managing a Street Lighting Network
Signal Strength Direct Communication Devices: The reduction in signal
strength measured at the device in decibels (dB).
Proxies and Target Devices: The reduction in signal strength at
the hop in decibels (dB). This value is the minimum of the
signal strengths measured at the device and its proxy.
Signal Margin Direct Communication Devices: The amount that the signal is
greater than the noise level at the device in decibels (dB).
Proxies and Target Devices: The amount that the signal is
greater than the noise level at the hop in decibels (dB).
Available Proxies The approximate number of repeating devices that can directly
communicate with the device, including the current proxy. The
signal strength at the repeating device and the number of hops
required to reach it determine whether a repeating device can
serve as a proxy for a given device.
Failure History
(24h).
Lists the 45-minutes intervals within the current 24-hour period
in which a device failure (if any) was reported.
Note: The data displayed in the Web page are cached values (not real-
time measurements). You can click Refresh to get the latest cached
values.
Repeating devices marked offline (red) in the tree view might not be
marked as such in the Powerline Repeating Analysis Web page; likewise,
devices marked offline (red) in the Powerline Repeating Analysis Web
page might not be marked as such in the tree view. Furthermore, there
could be a significant delay for a device in this Web page to show the
offline state if you have not configured the Use Offline Delay property in
the Setup – LON Channel Driver Web page. See
Configuring the
LonWorks Channel for Power Line Repeating
on page 29 for more
information about setting this property.
5. You can display the following advanced diagnostic statistics for a given
target device by clicking the Display Advanced Information checkbox: