Planning for connectorized units
Chapter 2: Planning considerations
2-14
phn-2510_002v000 (Mar 2012)
Table 9
Setting maximum power level to meet EIRP limits
Band
Regulation
Allowed
EIRP
Maximum (Antenna
Gain - Cable Loss)
Maximum Power
Level
5.4 GHz
FCC,
Canada and
ETSI
30 dBm
26 dBi
4 dBm
5.8 GHz
ETSI
36 dBm
32 dBi
4 dBm
Antenna Gain and Cable Loss must be entered correctly in the Wireless Wizard, as they
are used by the software to impose an automatic constaint on Maximum Power Level. For
more information, see
Step 1: Wireless configuration
on page
6-22
.
Calculating RF cable length (5.8 GHz FCC only)
The 5.8 GHz band FCC approval for the product is based on tests with a cable loss
between the ODU and antenna of not less than 1.2 dB. If cable loss is below 1.2 dB with a
6 ft diameter external antenna, the connectorized PTP 250 may exceed the maximum
radiated spurious emissions allowed under FCC 5.8 GHz rules.
Cable loss depends mainly upon cable type and length. To meet or exceed the minimum
loss of 1.2 dB, use cables of the type and length specified in
Table 10
(source: Times
Microwave). This data excludes connector losses.
Table 10
RF cable lengths required to achieve 1.2 dB loss at 5.8 GHz
RF cable type
Minimum cable length
LMR100
0.6 m (1.9 ft)
LMR200
1.4 m (4.6 ft)
LMR300
2.2 m (7.3 ft)
LMR400
3.4 m (11.1 ft)
LMR600
5.0 m (16.5 ft)
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 ...