User's Manual

62 Managing a Street Lighting Network
Time Stamp Displays the time at which the device last responded to a
network message.
Frequency in Use Displays the frequency carrier of the signal at the hop
(Primary or Secondary). For more information on the use of
these frequency carriers on a L
ONWORKS power line channel,
see the
LonWorks PLT-22 Power Line Transceiver User’s
Guide (110kHz - 140kHz Operation)
.
Signal Strength Direct Communication Devices: Displays the real-time
measurement in dB of the signal strength at the device.
Proxies and Target Devices: Displays the real-time
measurement (in dB for power line hops; in dBm for RF hops)
of the signal strength at the hop. This value is the minimum
of the signal strengths measured at the device and its proxy.
Signal Margin Direct Communication Devices: Displays the real-time
measurement in dB of the signal margin (the amount that
the signal is greater than the noise level) at the device.
Proxies and Target Devices: Displays the real-time
measurement (in dB for power line hops; in dBm for RF hops)
of the signal margin at the hop.
c. You can click Refresh to get updated real-time values.
d. Click Close to return to the Power Line Repeating Analysis Web
page.
7. Optionally, you can view statistics related to signal at the hop between
the selected device and all the proxies (repeating devices) that can be
used to relay messages to that device, including the current proxy. To
view the available proxies for a given device, perform the following steps:
a. Right-click the device and select Show Available Proxies from the
shortcut menu.
b. The Show Available Proxies dialog opens.