Issue 3.1, July 2006
Page 54 of 162
Vector Error
The vector error measurement compares the received signal’s In phase /
Quadrature (IQ) modulation characteristics to an ideal signal to determine the composite error
vector magnitude. The results are stored in a histogram and expressed in dB and presented as:
max, mean, min and latest. The histogram is calculated over a one hour period. If the
equipment has been running for less than one hour then the histogram is calculated over the
current elapsed time. The expected range for Vector Error would be approximately 0dB (NLOS
link operating at sensitivity limit on BPSK ½) to –29dB (short LOS link running 64QAM 7/8).
The data used to compute the histogram statistics can be downloaded in an ASCII command
separated variable (CSV) format via the download diagnostics page, see Section 8.3.14.
Link Loss
This is the total attenuation of the wireless signal between the two Point-to-Point
units.
The data used to compute the histogram statistics can be downloaded in an ASCII command
separated variable (CSV) format via the diagnostics CSV Download page, see Section 8.3.14.
The link loss calculation presented below:
P
ll
=
P
T
x
−
P
R
x
+
g
T
x
+
g
R
x
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)
g
T
x
,
g
R
x
Antenna gain at the remote and local
units respectively (dBi). The antenna
gain of the 30/60 Mbps Backhaul
(23.5 dBi) is used unless one or both
of the 30/60 Mbps Backhaul units is a
Connectorized version.
Equation 2: Link Loss
Receive Data Rate
The data rate in the receive direction, expressed in Mbps and presented
as: max, mean, min, and latest histogram format.
The histogram is calculated over a one hour period. If the equipment has been running for less
than one hour then the histogram is calculated over the current elapsed time.
The data used to compute the histogram statistics can be downloaded in an ASCII command
separated variable (CSV) format via the diagnostics CSV Download page, see Section 8.3.14.
Transmit Data Rate
The data rate in the transmit direction, expressed in Mbps and presented
as: max, mean, min, and latest histogram format.
The histogram is calculated over a one hour period. If the equipment has been running for less
than one hour then the histogram is calculated over the current elapsed time.
The data used to compute the histogram statistics can be downloaded in an ASCII command
separated variable (CSV) format via the download diagnostics page, see Section 8.3.14.
Содержание MOTOwi4 Canopy 30
Страница 1: ...Canopy 30 60 Mbps Backhaul User Guide BH30 60 UG en Issue 3 1 July 2006 ...
Страница 73: ...Issue 3 1 July 2006 Page 73 of 162 Figure 41 Fixed Frequency Operation Page 2 ...
Страница 74: ...Issue 3 1 July 2006 Page 74 of 162 Figure 42 Installation Wizard Confirm Configuration Normal ...
Страница 75: ...Issue 3 1 July 2006 Page 75 of 162 Figure 43 Installation Wizard Confirm Configuration Fixed Frequency ...
Страница 92: ...Issue 3 1 July 2006 Page 92 of 162 Figure 58 Spectrum Management Fixed Frequency Screen Master ...
Страница 104: ...Issue 3 1 July 2006 Page 104 of 162 Figure 69 System Reboot ...
Страница 124: ...Issue 3 1 July 2006 Page 124 of 162 Figure 75 Upper Grounding Configuration ...
Страница 137: ...Issue 3 1 July 2006 Page 137 of 162 Figure 83 Connectorized 30 60 Mbps Backhaul Confirm Installation Page ...