64
7.7.11 Aligning the PTP 600 Series Bridge ODUs
The following is a description of the steps taken to establish a radio link between the two
units forming the bridge and align the units for the best signal strength.
The PTP 600 Series Bridge uses audible tones during installation to assist the installer with
alignment. The installer should adjust the alignment of the ODU in both azimuth and elevation
until highest pitch tone is achieved
12
. The tones and their meanings are as follows:
State Name
Tone
Description
State Description
Pitch Indication (Higher
pitch = higher power)
Free Channel
Search
Regular beep Executing band scan
N/A
Scanning Slow
broken
tone
Not demodulating the wanted
signal
Rx Power
Synchronized Fast broken
tone
Demodulating the wanted
signal
Rx Power
Registered
Solid tone
Both Master and Slave units
exchanging Radio layer MAC
management messages
Rx Power
Table 9 - Audio indications from the ODU
The term ‘wanted signal’ refers to that of the peer unit being installed.
In each of the states detailed above, the unit should be aligned to give the highest pitch tone.
It should be noted that if, when in the Synchronized or Registered state, the tone varies
wildly, you may be suffering from interference or a fast fading link. Installing in this situation
may not give a reliable link. The cause of the problem should be investigated.
For the ease of alignment, both Master and Slave units use the install tones in the same way
but with some small behavioral differences. This allows the installer to install the Slave unit
first and carry out the initial alignment with the Master unit if desired. However, due to the
behavioral differences of Master and Slave units, it is recommended that the Master unit is
installed first and the initial alignment carried out at the Slave unit.
12
The pitch of the alignment tone is proportional to the received power of the wireless signals. The
best results are usually achieved by making small incremental movement in angular alignment.
Содержание MotoWI4 PTP 600 Series
Страница 1: ...PTP 600 Series User Guide MOTOROLA POINT TO POINT WIRELESS SOLUTIONS ...
Страница 2: ......
Страница 20: ...18 ...
Страница 87: ...85 Figure 34 VLAN Configuration Fields ...
Страница 90: ...88 Figure 37 Save Configuration File Screen ...
Страница 99: ...97 8 3 3 Detailed Counters Page Figure 43 Detailed Counters Page ...
Страница 110: ...108 Figure 49 Fixed Frequency Operation ...
Страница 113: ...111 8 3 4 5 Disarm Step 5 of the installation wizard is the disarm phase Figure 52 Disarm Installation ...
Страница 165: ...163 Figure 97 Lower Grounding Configuration ...
Страница 167: ...165 Figure 98 Surge Arrestor ALPU ORT Connection Illustration Note Cable screens have been sleeved ...
Страница 180: ...178 Figure 105 Connectorized 600 Series bridge Disarm Installation Page ...
Страница 199: ...197 Figure 116 Diagrammatically Showing the E1 T1 Connections ...
Страница 201: ...199 Figure 117 Typical Mast Installation with the addition of the E1 T1 cable ...
Страница 204: ...202 Figure 119 Surge Arrestor ALPU ORT Connection Illustration ...
Страница 208: ...206 Figure 123 QPSK 0 87 Single Paylaod Figure 124 16 QAM 0 63 Single Payload Figure 125 16 QAM 0 87 Single Paylaod ...
Страница 209: ...207 Figure 126 64 QAM 0 75 Single Payload Figure 127 64 QAM 0 92 Single Payload Figure 128 256 QAM 0 81 Single Payload ...
Страница 210: ...208 Figure 129 16 QAM 0 63 Dual Payload Figure 130 16 QAM 0 87 Dual Payload Figure 131 64 QAM 0 75 Dual Payload ...
Страница 211: ...209 Figure 132 64 QAM 0 92 Dual Payload Figure 133 256 QAM 0 81 Dual Payload ...