47
5.2.3 Deployment
Consideration
The following are deployment considerations:
•
Fixed frequency operation ONLY
•
Fixed TDD operation only, i.e. all synchronized links have same ratio master to slave.
•
Not presently available when radar avoidance is enabled.
•
Networks need to be carefully planned
5.2.4 PTP Approach for Using TDD Synchronization
The external timing reference will consist of a precise 1 Hz signal, synchronized in both phase
and frequency with a global (or at least network-wide) master. The master clock will be
provided by one GPS receiver per link. The GPS link will be fitted between the lightning
protection unit and the ODU.
The TDD frame structure will depend on primary characteristics of the overall network such
as the longest link and the maximum distance between interfering master and slave ODUs.
The ODU web management page contains an extension to the existing link installation wizard
to compute frame timings from these primary characteristics. The ODU additionally provides
an “expert mode” permitting frame timing details to be entered directly.
See Section
993H
14 for TDD Synchronization installation and configuration guidelines.
Содержание MOTOWI 4 PTP 600 Series
Страница 1: ...PTP 600 Series User Guide MOTOROLA POINT TO POINT WIRELESS SOLUTIONS ...
Страница 2: ......
Страница 24: ...22 List of Equations 462HEquation 1 Path Loss 955H63 463HEquation 2 Link Loss 956H91 ...
Страница 113: ...111 8 3 3 Detailed Counters Page Figure 53 Detailed Counters Page ...
Страница 139: ...137 Figure 75 Spectrum Management as seen from the Master Figure 76 Spectrum Management as seen from the Slave ...
Страница 183: ...181 Figure 114 Surge Arrestor ALPU ORT Connection Illustration Note Cable screens have been sleeved ...
Страница 220: ...218 14 3 2 2 Confirm Settings and Reboot ODU Figure 135 Confirm TDD Synchronization Configuration Parameters ...
Страница 221: ...219 Figure 136 Disarm Following TDD Synchronization ...
Страница 227: ...225 Figure 142 Diagrammatically Showing the E1 T1 Connections ...
Страница 228: ...226 Figure 143 Two E1 T1 120 Ohms signal Balanced to PTP600 Interface ...
Страница 230: ...228 Figure 144 Typical Mast Installation with the addition of the E1 T1 cable ...
Страница 233: ...231 Figure 146 Surge Arrestor ALPU ORT Connection Illustration ...
Страница 237: ...235 Figure 149 QPSK 0 63 Single Payload Figure 150 QPSK 0 87 Single Payload ...
Страница 238: ...236 Figure 151 16 QAM 0 63 Single Payload Figure 152 16 QAM 0 87 Single Payload ...
Страница 239: ...237 Figure 153 64 QAM 0 75 Single Payload Figure 154 64 QAM 0 92 Single Payload ...
Страница 240: ...238 Figure 155 256 QAM 0 81 Single Payload Figure 156 16 QAM 0 63 Dual Payload ...
Страница 241: ...239 Figure 157 16 QAM 0 87 Dual Payload Figure 158 64 QAM 0 75 Dual Payload ...
Страница 242: ...240 Figure 159 64 QAM 0 92 Dual Payload Figure 160 256 QAM 0 81 Dual Payload ...
