Wireless N2X5-3S1-16B User Manual Manual update in response to 22 Nov information request

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Document ID	75378
Application ID	e1AxpFQ2OSuFzA1aIOM5ZA==
Document Description	Manual update in response to 22 Nov information request
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	1.44kB (18053 bits)
Date Submitted	1999-12-10 00:00:00
Date Available	2000-01-24 00:00:00
Creation Date	2001-05-08 14:35:33
Producing Software	Acrobat Distiller 4.0 for Windows
Document Lastmod	2001-05-08 14:35:34
Document Title	Manual update in response to 22 Nov information request

Please make the following changes to the N2-X Ethernet Extender Manual:
Change antenna gain numbers (dBi) in Table 3.1 to values shown below, and add text between table
heading and table as shown:
Table 3.1 - Maximum Transmit Power Level Setting vs. Antenna Type (for compliance with FCC
EIRP limits) in the 5.3 GHz band
Per the following table, in the 5.3 GHz band the highest power setting (approximately +12 dBm) can only
be installed with the lowest gain antenna which is the 6” Flat Panel Plane Polarized (DFPD.5-52) with 17.5
dBi. Each radio is shipped from the factory with a standard 6’ coaxial cable for connection between the
radio and the antenna. The cable has a nominal loss of approximately 2.6 dB.
UNII radios are covered under CFR 47 FCC part 15, 15.407 Subpart E. 15.407.a.2 which states
Ptransmit = 11 dBm + 10 log B where B is the -26 dB BW with a 6 dBi antenna. Above 6 dBi antenna gain
there is a 1:1 reduction in Ptransmit to maintain the same MAXIMUM EIRP. This is accomplished by the
changes in output power setting for the alternative antennas.
The FCC EIRP limit for the 5.3 GHz band with our transmitter bandwidth is +28 dBm. With the transmit
power set to +12 dBm, the EIRP with the 6” Flat Panel antenna, and standard 6’ coaxial cable will be:
12 dBm + 17.5 dBi –2.6 dB = 26.9 dBm.
Antenna Type
Manufacturer P/N
2’ diameter dish with radome, Plane Polarized, 28.1 dBi
2’ diameter dish with radome, Dual Polarized, 28.1 dBi
6” Flat Panel, Plane Polarized, 17.5 dBi
12” Flat Panel, Plane Polarized, 23 dBi
24” Flat Panel, Plane Polarized, 27.5 dBi
Gabriel SSP2-52ARI
Gabriel SSD2-52ARI
Gabriel DFPD.5-52
Gabriel DFPD1-52
Gabriel DFPD2-52
Page 1 of 3
Maximum Transmit
Power Setting (dBm)
+12
+4
Please insert the following in section 2.3 on page 10 between the last paragraph in the text that describes
the “outdoor unit” interfaces and Table 2.4. This is a duplicate of the above statements.
Table X.X - Maximum Transmit Power Level Setting vs. Antenna Type (for compliance with FCC
EIRP limits) in the 5.3 GHz band
Per the following table, in the 5.3 GHz band the highest power setting (approximately +12 dBm) can only
be installed with the lowest gain antenna which is the 6” Flat Panel Plane Polarized (DFPD.5-52) with 17.5
dBi. Each radio is shipped from the factory with a standard 6’ coaxial cable for connection between the
radio and the antenna. The cable has a nominal loss of approximately 2.6 dB.
UNII radios are covered under CFR 47 FCC part 15, 15.407 Subpart E. 15.407.a.2 which states
Ptransmit = 11 dBm + 10 log B where B is the -26 dB BW with a 6 dBi antenna. Above 6 dBi antenna gain
there is a 1:1 reduction in Ptransmit to maintain the same MAXIMUM EIRP. This is accomplished by the
changes in output power setting for the alternative antennas.
The FCC EIRP limit for the 5.3 GHz band with our transmitter bandwidth is +28 dBm. With the transmit
power set to +12 dBm, the EIRP with the 6” Flat Panel antenna, and standard 6’ coaxial cable will be:
12 dBm + 17.5 dBi –2.6 dB = 26.9 dBm.
Antenna Type
Manufacturer P/N
2’ diameter dish with radome, Plane Polarized, 28.1 dBi
2’ diameter dish with radome, Dual Polarized, 28.1 dBi
6” Flat Panel, Plane Polarized, 17.5 dBi
12” Flat Panel, Plane Polarized, 23 dBi
24” Flat Panel, Plane Polarized, 27.5 dBi
Page 2 of 3
Gabriel SSP2-52ARI
Gabriel SSD2-52ARI
Gabriel DFPD.5-52
Gabriel DFPD1-52
Gabriel DFPD2-52
Maximum Transmit
Power Setting (dBm)
+12
+4
Table X.X - Maximum Transmit Power Level Setting vs. Antenna Type (for compliance with FCC
EIRP limits) in the 5.7 GHz band, original and July 31, 1998 rules
Per the following table, in the 5.7 GHz band the highest power setting (approximately +12 dBm) can only
be installed with the lowest gain antenna which is the 6” Flat Panel Plane Polarized (DFPD.5-52) with 17.5
dBi. Each radio is shipped from the factory with a standard 6’ coaxial cable for connection between the
radio and the antenna. The cable has a nominal loss of approximately 2.6 dB.
UNII radios are covered under CFR 47 FCC part 15, 15.407 Subpart E. 15.407.a.3 which states
Ptransmit = 17 dBm + 10 log B where B is the -26 dB BW with a 6 dBi antenna. Above 6 dBi antenna gain
there is a 1:1 reduction in Ptransmit to maintain the same MAXIMUM EIRP. This is accomplished by the
changes in output power setting for the alternative antennas.
The original FCC EIRP limit for the 5.7 GHz band with our transmitter bandwidth is +33 dBm. With the
transmit power set to +12 dBm, the EIRP with the 6” Flat Panel antenna, and standard 6’ coaxial cable will
be: 12 dBm + 17.5 dBi –2.6 dB = 26.9 dBm. The corresponding settings are included in the following table.
Antenna Type
Manufacturer P/N
2’ diameter dish with radome, Plane Polarized, 28.1 dBi
2’ diameter dish with radome, Dual Polarized, 28.1 dBi
6” Flat Panel, Plane Polarized, 17.5 dBi
12” Flat Panel, Plane Polarized, 23 dBi
24” Flat Panel, Plane Polarized, 27.5 dBi
Gabriel SSP2-52ARI
Gabriel SSD2-52ARI
Gabriel DFPD.5-52
Gabriel DFPD1-52
Gabriel DFPD2-52
Maximum Transmit
Power Setting (dBm)
+12
+8
+4
The FCC will also allow higher EIRP for point to point links with higher gain antennas. Page 703 of the
FCC document, CFR 47 FCC part 15, 15.407 Subpart E, FR 40836, July 31, 1998 has the provisions for
these power limits. The path length isn’t increased, since the 5.3 GHz transmitter isn’t allowed the higher
EIRP. We recommend the higher power settings only when absolutely necessary.
This rule states " fixed pt-pt U-NII devices operating in this band may employ transmitting antennas with
directional gain up to 23 dBi without the corresponding reduction in transmitter peak output power or peak
power spectral density”. Also above 23 dBi antenna gain there is a 1:1 reduction in Pout to maintain the
same MAX EIRP.
We are in compliance even at the maximum antenna gain and transmitter power, since the
corresponding output power is over +27 dBm in our BW and the resulting EIRP for a 6 dBi antenna is +33
dBm. This EIRP limit is further extended to +44 dBm by a +23 dBi antenna. Our EIRP with a 23 dBi
antenna at maximum output power is 12 dBm + 23 dBi –2.6 dB = +32.4 dBm. With the highest gain
antenna and maximum output power the EIRP would be 12 dBm + 28.1 dBi –2.6 dB = +37.5 dBm.
Page 3 of 3

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