User's Guide

Help Hot Line (U.S. only): 1-800-530-9960 B-3
D-620610-0-20 Rev B CONFIDENTIAL
to adjacent band users. This power reduction is to be by means of input
power or gain reduction and not by an attenuator at the output of the device.
NOTE: This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause harm-
ful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
B.2 Human Exposure to RF
The U.S. Federal Communications Commission (FCC) has developed guidelines for
evaluation of human exposure to RF emissions. The guidelines incorporate limits for
Maximum Permissible Exposure (MPE) for power density of transmitters operating
at frequencies between 300 kHz and 100 GHz. Limits have been set for portable,
mobile, and fixed equipment. LGC products fall in the category of fixed equipment;
products intended to be permanently secured and exposures are evaluated for dis-
tances greater than 20cm (7 7/8”). Portable devices fall into exposures of less than
20cm, are SAR evaluations are used.
Antenna gain is restricted to 1.5 W ERP (2.49 W EIRP) in order to satisfy RF expo-
sure compliance requirements. If higher than 1.5 W ERP, routine MPE evaluation is
needed. The antennas should be installed to provide at least 20 cm from all persons to
satisfy MPE requirements of FCC Part 2, 2.1091.
Basic MPE evaluation is performed by taking the maximum power output of the
equipment, the gain of the antenna to be used, and distance from the antenna, refer-
enced in FCC OET Bulletin 65 “Evaluation Compliance with FCC Guidelines for
Human Exposure to Radio Frequency for Electric Fields”.
LGC products transmit well below the FCC power density limits. FCC defines power
output limits
at 20cm distance for various frequency ranges:
• Over 300 mHz to 1.5 GHz the limit is determined by frequency/1500
• Above 1.5 GHz the limit is 1mW/cm2
The basic equation for determining power density is:
S = PG / 4πR
2
1. “Manufacturer’s rated output power” refers to Fusion’s downlink P1dB. The power per carrier tables take into account this
power reduction for multiple carriers.