Motorola MOTOWI 4 User Manual page 64

Receive Power: Receive power histogram is expressed in dBm and presented as: max, mean,
min, and latest. The max, min and latest are true instantaneous measurements; the mean is the
mean of a set of one second means. See
Vector Error: The vector error measurement compares the received signal's In phase / Quad-
rature (IQ) modulation characteristics to an ideal signal to determine the composite error vector
magnitude. The results are stored in an histogram and expressed in dB and presented as: max,
mean, min and latest. The max, min and latest are true instantaneous measurements; the mean
is the mean of a set of one second means. The expected range for Vector Error would be approx-
imately -2dB (NLOS link operating at sensitivity limit on BPSK 0.67) to -33dB (short LOS link
running 256 QAM 0.83). See
Link Loss: The link loss is the total attenuation of the wireless signal between the two point-to-
point units. See footnote 10
The link loss calculation presented below:
Where
= Link Loss
= Transmit power of the remote wireless unit
= Received signal power at the local unit
= Antenna gain at the remote and local units respectively
Equation - Link Loss
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.
footnote 10
See "histograms". Expected data rates can be found in
Calculations".
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.
See footnote 10 "histograms". Expected data rates can be found in
Calculations".
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
of the prevailing wireless conditions as well as the distance (range) between the two wireless units.
Transmit Modulation Mode: The modulation mode currently being used on the transmit
channel. List of all the modulation modes can be found in
plots are given for each available modulation mode.
11
The antenna gain of the 500 Series bridge (23.5 dBi) is used unless one or both of the units is a Connectorized
version.
Web Page Reference
footnote 10
footnote 10 "histograms".
"histograms".
= +
64
"histograms".
+
dB
dBm
dBm
11
dBi
Section 14
Section 14
Section 14 where data rate calculations
(4)
"Data Rate
"Data Rate