User's Manual

8-38 PMP320HDW2v1
Preliminary
JUL
2010
T able 8 - 3 shows calculated minimum separation distances d, recommended distances and
resulting power compliance margins for each frequency band and antenna combination.
Details of Exposure Separation Distances Calculations and Power Compliance Margins Chapter 8:
Regulatory,
Legal, and Safety Notices
Table 8-3 Calculated exposure distances and power compliance margins
P( dBm ) P( W ) G S Distance (cm ,
Calculated )
3630APC 25.1 0.324 16.5 10 33.92
3630SM 27.06 0.508 14.5 10 33.76
These are conservative distances:
• They are along the beam direction (the direction of greatest energy). Exposure to the sides
and back of the module is significantly less.
• In the case of collocated AP s, they assume all AP s are oriented in the same direction,
which is a worst - case calculation.
• They meet or exceed sustained exposure limits for the general population (not just
short - term occupational exposure limits).
• The calculated compliance distance d is overestimated because the far - field equation
models the antenna(s) as a point source and neglects the physical dimension of the
antenna(s).
Table 8-4 Exposure separation distances
Module T ype Separation Distance from Persons
R adio Module with integrated antenna A t least 20 cm (approximately 8
inches)
Module with Reflector Dish A t least 1.5 m (approximately 60
inches or 5 feet)
Module with LENS A t least 0.5 m (approximately 20
inches)
Antenna of connectorized 5.7 GHz AP A t least 30 cm (approximately 12
inches)
Antenna of connectorized
or integrated 900 MHz
module
A t least 60 cm (approximately 24
inches)
Indoor 900 MHz SM A t least 10 cm (approximately 4