Web-based management Chapter 7 Operation
phn-1115_006v000
7-16
Sep 2010
Attribute Meaning
Link Loss The link loss is the total attenuation of the wireless signal
between the two point-to-point units. See Histogram data on
page
7-19. The link loss calculation presented below:
xxxx
RTRTll
ggPPP
=
Where:
ll
P
= Link Loss (dB)
x
T
P
= Transmit power of the remote wireless unit (dBm)
x
R
P
= Received signal power at the local unit (dBm)
xx
RT
gg ,
= Antenna gain at the remote and local units
respectively (dBi). The antenna gain of the ODU (23.5
dBi) is used unless one or both of the units is a
Connectorized version.
For connectorized ODUs, the link loss calculation is modified
to allow for the increased antenna gains at each end of the
link.
Transmit Data
Rate
The data rate in the transmit direction, expressed in Mbps
and presented as: max, mean, min, and latest in an histogram
format. The max, min and latest are true instantaneous
measurements; the mean is the mean of a set of one second
means. Expected data rates can be found in Data rate
cal
cul
ations on page 4-77.
Receive Data Rate The data rate in the receive direction, expressed in Mbps and
presented as: max, mean, min, and latest in an histogram
format. The max, min and latest are true instantaneous
measurements; the mean is the mean of a set of one second
means. Expected data rates can be found in Data rate
cal
cul
ations on page 4-77.
Link Capacity The maximum aggregate data rate capacity available for user
traffic, assuming the units have been connected using Gigabit
Ethernet. The link capacity is variable and depends on the
prevailing wireless conditions as well as the distance (range)
between the two wireless units.
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