User's Manual

Title: SOP Concentrator Installation
Doc. Number: XX-XXXX Revision: 01 Page 3 of 18
© Cellnet 2006, All rights reserved.
FCC Information
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired
operation.
FCC Part 15.247 Operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz.
(a) Operation under the provisions of this section is limited to frequency hopping and direct sequence spread
spectrum intentional radiators that comply with the following provisions:
(1) Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of
25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. The system shall hop to
channel frequencies that are selected at the system hopping rate from a pseudo-randomly ordered list of
hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system
receivers shall have input bandwidths that match the hopping channel bandwidths of their corresponding
transmitters and shall shift frequencies in synchronization with the transmitted signals.
(i) For frequency hopping systems operating in the 902-928 MHz band: if the 20 dB bandwidth of the hopping
channel is less than 250 kHz, the system shall use at least 50 hopping frequencies and the average time of
occupancy on any frequency shall not be greater than 0.4 seconds within a 20 second period; if the 20 dB
bandwidth of the hopping channel is 250 kHz or greater, the system shall use at least 25 hopping
frequencies and the average time of occupancy on any frequency shall not be greater than 0.4 seconds
within a 10 second period. The maximum allowed 20 dB bandwidth of the hopping channel is 500 kHz.
(ii) Frequency hopping systems operating in the 2400-2483.5 MHz and 5725-5850 MHz
bands shall use at least 75 hopping frequencies. The maximum 20 dB bandwidth of the hopping channel is 1
MHz. The average time of occupancy on any frequency shall not be greater than 0.4 seconds within a 30
second period.
(iii) Frequency hopping systems in the 2400-2483.5 MHz band may utilize hopping channels whose 20 dB
bandwidth is greater than 1 MHz provided the systems use at least 15 non-overlapping channels. The total
span of hopping channels shall be at least 75 MHz. The average time of occupancy on any one channel
shall not be greater than 0.4 seconds within the time period required to hop through all channels.
(2) For direct sequence systems, the minimum 6 dB bandwidth shall be at least 500 kHz.
(b) The maximum peak output power of the intentional radiator shall not exceed the following:
(1) For frequency hopping systems in the 2400-2483.5 MHz band employing at least 75 hopping channels,
all frequency hopping systems in the 5725-5850 MHz band, and all direct sequence systems: 1 watt. For all
other frequency hopping systems in the 2400-2483.5 MHz band: 0.125 watts.
(2) For frequency hopping systems operating in the 902-928 MHz band: 1 watt for systems employing at
least 50 hopping channels; and, 0.25 watts for systems employing less than 50 hopping channels, but at
least 25 hopping channels, as permitted under paragraph
(a)(1)(i) of this section.
(3) Except as shown in paragraphs (b)(3) (i), (ii) and (iii) of this section, if transmitting antennas of directional
gain greater than 6 dBi are used the peak output power from the intentional radiator shall be reduced below
the stated values in paragraphs (b)(1) or (b)(2) of this section, as appropriate, by the amount in dB that the
directional gain of the antenna exceeds 6 dBi.