8 Web Page Reference
84
x
x
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P
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 footnote 8.
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 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 approximately -2dB (NLOS link operating at sensitivity limit on BPSK
0.67) to –33dB (short LOS link running 256 QAM 0.83).
Link Loss:
The link loss is the total attenuation of the wireless signal between the two
point-to-point units. See footnote 8.
The link loss calculation presented below:
+
+
−
=
Where is
ll
P
x
T
P
x
R
P
x
x
R
T
g
g
,
Link Loss (dB)
Transmit power of the remote wireless unit
(dBm)
Received signal power at the local unit
(dBm)
Antenna gain at the remote and local units
respectively (dBi)
.
Equation 2 - 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 footnote 8. Expected data rates can be found in Section 14 “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.
9 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 PTP 54500
Страница 1: ...PTP 500 Series User Guide MOTOROLA POINT TO POINT WIRELESS SOLUTIONS ...
Страница 2: ......
Страница 132: ...8 Web Page Reference 130 Figure 65 Spectrum Management Slave Screen With Operational Restrictions ...
Страница 190: ...14 Data Rate Calculations 188 Figure 111 QPSK 0 50 Single Payload Figure 112 QPSK 0 75 Single Payload ...
Страница 191: ...14 Data Rate Calculations 189 Figure 113 16 QAM 0 50 Single Payload Figure 114 16 QAM 0 75 Single Payload ...
Страница 192: ...14 Data Rate Calculations 190 Figure 115 64 QAM 0 67 Single Payload Figure 116 64 QAM 0 83 Single Payload ...
Страница 193: ...14 Data Rate Calculations 191 Figure 117 QPSK 0 50 Dual Payload Figure 118 QPSK 0 75 Dual Payload ...
Страница 194: ...14 Data Rate Calculations 192 Figure 119 16 QAM 0 50 Dual Payload Figure 120 16 QAM 0 75 Dual Payload ...
Страница 195: ...14 Data Rate Calculations 193 Figure 121 64 QAM 0 67 Dual Payload Figure 122 64 QAM 0 83 Dual Payload ...
Страница 205: ...16 Legal and Regulatory Notices 203 16 4 Exposure See Section 2 Avoiding Hazards ...