![Cambium Networks PTP 250 Скачать руководство пользователя страница 109](http://html.mh-extra.com/html/cambium-networks/ptp-250/ptp-250_user-manual_485711109.webp)
PTP 250 User Guide
Wireless specifications
phn-2510_002v000 (Mar 2012)
4-5
Wireless specifications
This section contains specifications of the PTP 250 wireless interface. These specifications
include RF bands, channel width and link loss.
General wireless specifications
Table 25
contains radio system specifications for the 5.4 GHz band.
Table 26
contains
radio system specifications for the 5.8 GHz band.
Table 25
5.4 GHz RF specifications
Radio technology
Specification
RF band
5.470-5.725 GHz
Channel selection
By dynamic frequency control and manual intervention
Automatic detection on start-up and continual adaptation.
Dynamic frequency control
Initially 10-15 sec. Out of service on interference 100 ms.
Channel width
20 MHz and 40 MHz
Manual power control
Maximum power can be controlled lower than the power limits
in order to control interference to other users.
Receiver noise figure
Typically 6 dB
Integrated antenna type
Integrated flat plate antenna; gain 23 dBi
External antenna gain
See
Calculating maximum power level for connectorized units
on page
2-13
.
Antenna beamwidth
8 Degrees
Max path loss
150 dB (20 MHz channel, integrated antenna)
Range (optical line-of-sight)
54 km (34 miles) at channel width 20 MHz
27 km (17 miles) at channel width 40 MHz
Over-the-air encryption
Proprietary scrambling mechanism.
Weather sensitivity
Sensitivity at higher modes may be reduced during high winds
through trees due to Adaptive Modulation Threshold changes
Error correction
FEC
Содержание PTP 250
Страница 1: ...Cambium PTP 250 User Guide System Release 250 02 01 ...
Страница 8: ...Safety and regulatory information VI phn 2510_002v000 Mar 2012 ...
Страница 20: ...List of Tables xii phn 2510_002v000 Mar 2012 ...
Страница 58: ...System management Chapter 1 Product description 1 30 phn 2510_002v000 Mar 2012 ...
Страница 104: ...Limit of liability Chapter 3 Legal information 3 12 phn 2510_002v000 Mar 2012 ...
Страница 122: ...Notifications Chapter 4 Reference information 4 18 phn 2510_002v000 Mar 2012 ...
Страница 152: ...Installing the PoE power supply Chapter 5 Installation 5 30 phn 2510_002v000 Mar 2012 ...