Web Page Reference
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
“histograms”.
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
“histograms”.
Link Loss:
The link loss is the total attenuation of the wireless signal between the two point-to-
point units. See
“histograms”.
The link loss calculation presented below:
P
l
=
P
T
−
P
R
+
g
T
+
g
R
(4)
Where
P
l
= Link Loss
dB
P
T
= Transmit power of the remote wireless unit
dBm
P
R
= Received signal power at the local unit
dBm
g
t
, g
r
= Antenna gain at the remote and local units respectively
dBi
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.
See
“histograms”. Expected data rates can be found in
“Data Rate
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
“histograms”. Expected data rates can be found in
“Data Rate
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
where data rate calculations
plots are given for each available modulation mode.
The antenna gain of the 500 Series bridge (23.5 dBi) is used unless one or both of the units is a Connectorized
version.
Содержание MOTOWI 4
Страница 1: ...PTP 500 Series User Guide phn 1115 000v001 ...
Страница 74: ...Web Page Reference 74 Figure 37 Save Configuration File Screen ...
Страница 100: ...Web Page Reference 100 Figure 59 Spectrum Management as seen from the Master ...
Страница 108: ...Web Page Reference 108 Figure 66 Spectrum Management Master Screen With Operational Restrictions ...
Страница 112: ...Web Page Reference 112 Figure 68 Remote Management ...
Страница 165: ...Data Rate Calculations 165 Figure 112 QPSK 0 50 Single Payload Figure 113 QPSK 0 75 Single Payload ...
Страница 166: ...Data Rate Calculations 166 Figure 114 16 QAM 0 50 Single Payload Figure 115 16 QAM 0 75 Single Payload ...
Страница 167: ...Data Rate Calculations 167 Figure 116 64 QAM 0 67 Single Payload Figure 117 64 QAM 0 83 Single Payload ...
Страница 168: ...Data Rate Calculations 168 Figure 118 256 QAM 0 75 Single Payload Figure 119 QPSK 0 50 Dual Payload ...
Страница 169: ...Data Rate Calculations 169 Figure 120 QPSK 0 75 Dual Payload Figure 121 16 QAM 0 50 Dual Payload ...
Страница 170: ...Data Rate Calculations 170 Figure 122 16 QAM 0 75 Dual Payload Figure 123 64 QAM 0 67 Dual Payload ...
Страница 171: ...Data Rate Calculations 171 Figure 124 64 QAM 0 83 Dual Payload Figure 125 256 QAM 0 75 Dual Payload ...
Страница 197: ...Glossary 197 UTP Unshielded Twisted Pair VLAN Virtual Local Area Network ...
