General Considerations
37
Note:
For Region Code 16, the EIRP limit is approximately 63 dBm + 10 x Log(360/Antenna
Azimuth BW.
When shipped from the factory units
are configured as follows:
•
PTP 500 Series Bridge 5.4 GHz – Region Code 26
•
PTP 500 Series Bridge 5.8 GHz – Region Code 1
5.3
Operational Restrictions
5.3.1
Radar Avoidance
Radar Avoidance requires that equipment used in the region:
•
Detects interference from other systems and avoids co-channel operation with these systems,
notably radar systems.
•
Provide on aggregate a uniform loading of the spectrum across all devices, i.e. Fixed Frequency
operation is not allowed.
•
Radar avoidance is not applicable to the PTP54600 product.
To address the primary aims the Spectrum Management algorithm implements a radar detection
function which looks for impulsive interference on the active channel only. If impulsive interference
is detected Spectrum Management will mark the current active channel as having detected radar
and initiate a channel hop to an available channel. The previous active channel will remain in the
radar detected state for thirty minutes after the last impulsive interference pulse was detected.
After the thirty minutes have expired the channel will be returned to the available channel pool.
The radar detection algorithm will always scan the active channel for 60 seconds for radar interfer-
ence before using the channel. This compulsory channel scan will mean that there is a 60 seconds
service outage every time radar is detected and that the installation time is extended by 60 seconds
even if there is found to be no radar on the channel.
NOTE:
On system installation or start-up this extends the initial scan time of the Master unit
by 60 seconds. To address the “provide aggregate uniform loading of the spectrum across all
devices” requirement, the channel selection algorithm will choose a channel at random from a list
of available channels. The channel selection algorithm is initiated at link initialization and when
radar interference is detected.
Note that 5.4 GHz and 5.8 GHz are different products.
Note that the Quickstart Guide also contains the license keys for region 12 and 13.
Содержание MOTOWI 4
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 ...
