Web Page Reference
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Depending upon the link characteristic that the customer requires, this may very well be the best
choice. It increases consistency of link performance and equality in each direction as a trade-off
against maximum throughput.
Tx Max Power:
This attribute controls the maximum transmit power the unit is permitted to
use when installing and executing the wireless link. The maximum setting for a particular region
or country is controlled by the License Key.
Platform Variant:
Chooses between an integrated unit or a connectorized unit that requires an
external antenna.
Channel Bandwidth:
Users can choose a variable channel bandwidth for the available spectrum.
Value is 15 MHz.
Spectrum Management Control:
Is used to configure the PTP 500 Series Bridge’s Spectrum
Management features, see
“Spectrum Management” for more details. i-DFS is the
abbreviation for intelligent Dynamic Frequency Selection. This feature continually monitors the
spectrum looking for the channel with the lowest level of on channel and co-channel interference.
Fixed frequency mode allows the installer to fix transmit and receive frequencies on the units. The
frequencies may be configured symmetrically or asymmetrically.
Lower Center Frequency:
The software for the PTP 500 Series Bridge allows a user to optionally
adjust the channel center frequencies. Changing the Lower Center Frequency attribute causes all
channel center frequencies to be offset. It effectively slides the channelization up or down. See
Sections
“5.4 GHz Specific Frequency Planning Considerations” and
“5.8 GHz Specific Frequency Planning Considerations” depending on the frequency variant.
Warning:
The lower center frequency attribute must be configured to the same value for both
the master and slave. Failure to do so will cause the wireless link to fail reestablishment. The only
way to recover from this situation is to modify the Lower Center Frequency attribute so that they
are identical on both the master and slave unit.
Fixed Transmit Frequency, Fixed Receive Frequency:
The software for the PTP 500 Se-
ries Bridge allows a user to optionally fix the Transmit and the Receive frequencies for a wireless
link. The settings must be compatible at each end of the link. Once configured the spectrum
management software will not attempt to move the wireless link to a channel with lower co or
adjacent channel interference. Therefore this mode of operation is only recommended for deploy-
ments where the installer has a good understanding of the prevailing interference environment.
shows a sample fixed frequency configuration for a 30 MHz channel bandwidth. In the
example the lower center frequency is set to its default values and the Fixed Transmit Frequency
is set to 5735 MHz and the Fixed Receive Frequency is set to 5735 MHz. Care must be taken
when configuring the Fixed Transmit and Receive Frequencies to ensure that both frequencies are
on the same 5 MHz channel raster as the Lower Center Frequency. For example both the Fixed
Transmit and Receive Frequencies must be a multiple of 5 MHz from the Lower Center Frequency
(5740 = 5735 + 5 MHz) and (5745 = 5735 + 5 MHz x 2). Please note that there is a raster that
limits the selection of the Rx frequency based upon the setting of the Tx frequency, and that the
list of options presented in the fixed Tx frequency box is limited to that raster.
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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 ...