Installation guide

FCC Approval Statement

Altitude™ 4760 Series Access Point Installation Guide

6 The requirement for ensuring 30 MHz frequency separation is based on the best

information available to date. If interference is not eliminated, a distance limitation

based on line-of-sight from TDWR will need to be used. In addition, devices with

bandwidths greater than 20 MHz may require greater frequency separation.

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Procedures for the installers and the operators on how to register the devices in the

industry-sponsored database with the appropriate information regarding the location

and operation of the device and installer information is included.6

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Devices must meet all of the other requirements specified in Section 15.407, and it is

prohibited to include configuration controls (e.g. country code settings or other

options to modify DFS functions) to change the frequency of operations to any

frequency other than those specified on the grant of certification for US operation.7

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All applications for equipment authorization must clearly show compliance with all

of the technical requirements under worst case parameters, under user or operator

control, based on frame rates, listen/talk ratios and user data transfer conditions.

All the devices subject to the DFS requirements must be submitted to the Commission’s

Laboratory Division for pre-grant testing and equipment authorization.8 The applicant

must ensure that all equipment authorization applications subject to this interim

procedure include appropriate attestations that the device has no option to change the

DFS parameters and that transmissions are disabled at least in the 5600 – 5650 MHz

band. The application must include the user’s manual with the appropriate installation

and operations requirements for the installers and operators.

We are continuing to evaluate additional measures that may need to be taken to further

ensure against interference caused by 5 GHz outdoor wireless systems located near

airports. While manufacturers have an obligation to ensure that their equipment

complies with FCC rules, and must take steps to ensure their devices are unlikely to

cause harmful interference, Section 15.5 of the Commission’s rules also places an

obligation on users of devices to avoid causing interference and to correct any

interference that may occur.

We encourage the manufacturers to include information for the users, including the

operators and installers, to ensure that they understand that it is incumbent on them to

cooperate with manufacturers to implement any changes necessary to facilitate

compliance.

7 Devices may be optionally designed not to transmit on channels which overlap 5570 –

5680 MHz instead of requiring installers to perform site-by-site adjustments. In that case

it is still required that the devices should be installed professionally and the procedures

for registering the device in the industry database should be included in the Users

Manual.