107
Loopback:
Allows the T1 or E1 data stream to be looped back at the copper or wireless
interface. During normal operation the loopback must be set to "None".
It may be helpful during installation to test the telecoms links by performing loopback
connections.
A "Copper" loopback connects the received data on a given telecoms interface to the
Transmit. A "Copper" loopback may be used, in conjunction with an appropriate test unit, to
confirm that the correct connections have been made to the ODU.
A "Wireless" loopback sends the telecoms data received across the wireless link back across
the link on the same channel. The link may be checked using, for example, a Bit Error Rate
Tester.
A typical T1 or E1 installation might include a "Copper" loopback on the local unit followed by
a "Wireless" loopback on the remote unit.
It is important to remove all loopbacks on channels for normal operation.
Alarms on the Home Page indicate the presence of loopbacks on either channel.
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 ...
