EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d)
EXHIBIT 2: Product Description and Operation Overview
EXHIBIT 3:Information for which Confidentiality is Requested
Schematics
EXHIBIT 4:Product Photographs
EXHIBIT 5:User Manual and FCC ID Label
EXHIBIT 6:RF Hazard Information per Sec. 1.1307
EXHIBIT 7: Report of Measurements
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EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d)
- refer to separate Word attachment
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EXHIBIT 2:Product Description and Operation Overview
General Ove rv iew
The N2-4XE1 is a point to point Wireless Extension operating in the 5.3/5.7 GHz UNII band as
authorized in rule sections 15.401 through 15.407.The unit is enclosed in a weather proof
outdoor enclosure and is intended to provide data links over distances up to 10 km.The radio
in the unit operates full duplex, transmitting and receiving data at the rate of 8.448 Mbps. The
radio is modulated using BPSK.
The product uses two separate 100 MHz bands within the U-NII frequency spectrum. Within
these bands,the N2-4XE1 series operates in one of many independent channels providing for
frequency reuse a nd network flexibility.
Synthesized RF channel selection is field configurable,as are the power output options for the
selec tion of antenna sizes. .
Frequenc y Band:
Frequency Range:5,250 -5,350 MHz and 5,725 -5,825 MHz
Digital Interface
Capac ity O ptions:4xE1
ITU-T/E1
Type:Based on 4 E-1 inputs
Line rate:4 x 2.048 Mb/s
Line Code:HDB3
Interface:75
A description of the theory of operation and product configuration is found in an attachment to
this application and report.
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System Interconnection
- refer to attachment
fccbloc.pdf
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EXHIBIT 3:Information for which Confidentiality is Requested
Schematics
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EXHIBIT 4: Product Photographs
-refer to separate jpg attachments
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EXHIBIT 5:User Manual and FCC ID Label
-refer to separate .pdf attachment
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EXHIBIT 6: RF Hazard Information Per Sec. 1.1307
For transmitters operating in the 5250-5825 MHz frequency range, paragraph 1.1310 limits
maximum permissible exposure (MPE) to 1 mW/cm2 for uncontrolled environments.
The maximum distance from the antenna at which MPE is met or exceeded is calculated from the
equation relating field strength in V/m, transmit power in watts, transmit antenna gain, and
separation distance in meters:
E,V/m = (√(30*P*G))/d
2
Power density, mW/m2 = E
E for MPE 1mW/m2 = 61.4 V/m
/3770
Simplifying and rearranging terms:
d = (√(30*P*G))/61.4 Converting to decibels:
20 log d = 10 log 30 + 10 log P watts + G dBi -35.8 dB
The UNII requirements for maximum power, peak power spectral density, minimum
26 dB emissions bandwidth, and maximum EIRP are interdependent variables. In
addition, the level of transmitter spectral re-growth at the UNII band edges will limit the
power output that may be transmitted into a particular antenna, since the emission limit is
-17dBm/MHz and /or -27dBm/MHz EIRP, dependent on both antenna gain and power input.
The Wireless UNII radio has user programmable output power levels from 0 - 12 dBm.
The
26 dB channel bandwidth
is 11.4 MHz.
A number of antennas can be used with the point-to-point UNII radio, with gains that
vary
between 18.5 dBi and 28.5 dBi.
Peak Power Spectral Density
Ref: 15.407(b)2
Measurement equipment used:
HP 8565E spectrum analyzer
30 dB attenuator
Test set-up:
Refer to Figure 2
Test Procedures
1. Set EUT to lowest operating channel.
2. Set spectrum analyzer to TX output center frequency, RES BW = 1MHz,
VID BW = 1MHz.
3. Using MKR PEAK to find the peak power spectral density
4. Repeat for middle channel and highest channel
Test Results
Measured peak power density is below 13.3 dBm. Refer to attached documents
Chanel Frequency, MHz PSD dBm/MHzLimit, dBm/MHz
15733.6 12.517
55776.6 13.1717
85807.4 13.1717
Peak Excursion of Modulation Envelope
psdX.jpg
Ref: 15.407(a)6
The EUT employs BPSK modulation, which is constant envelope. Measured power is
therefore equivalent to peak power of the envelope. Comparison with PSD data shows
that the difference between peak excursion of the modulation envelope and peak power is
less than 1 dB.
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Field Strength of Spurious and Harmonic Radiation
Ref: 15.407(c)6
Measurement Equipment Used:
HP 8566 Spectrum Analyzer
HP 11975A Preamplifier, 2 - 8 GHz (used with HP11970 external mixers)
Antenna Research Associates MWH 1826/B, 18 - 26.5 GHz
HP 11970K Harmonic mixer, 18 - 26.5 GHz
HP 11970A Harmonic mixer, 26.5 - 40 GHz
HP 11970Q Harmonic mixer, 33 - 50 GHz
HP 11970V Harmonic mixer, 50 - 75 GHz
HP 11970W Harmonic mixer, 75 - 110 GHz
Low loss antenna cable (0.7 dB/ft @ 24 GHz)
Test Set-Up
-OR-
30 cm
leveling pre-amp
horn antenna
external mixer spectrum analyzer
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Test Method
With the transmitter operating at full power, the EUT was rotated 360° and the search
antenna was raised and lowered in both polarities, all in an attempt to maximize the
levels of the received emission for each harmonic and spurious emission up to 40 GHz.
Test Results
No emissions above instrumentation noise floor were detected. Tests were performed for
each of the 4 antennas at a LOW, MID, and HIGH channel.
Antenna conducted measurements confirmed there are no harmonic emissions generated
by this transmitter above the noise floor of the spectrum analyzer (-51 dBm or lower).
Using the relationship between field strength, output power and distance
EV/m = (•(30*PW*G))/d meters (E volts/m, P watts, G numeric gain over isotropic)
Assu ming G=1, converting volts to microvolts and watts to milliwatts, simplifying and combining
terms, and using a distance of d = 3m