Zebra Technologies Corporation AP716101 用户手册

AP 7161 Access Point Installation Guide

1 The devices subject to the requirements in this KDB can select the initial channel for operation to avoid TDWRs

and apply the Uniform  Channel Spreading requirements  (see FCC 06-96   in  ET Docket 03-122 released June 30,
2006) on the remaining  available frequency band of operation.  All  the other test  procedures including the test
radar patterns  remain the same at the present time. A revision to the measurement procedure with modification
to the Uniform Channel Spreading requirement  and other changes will be released in the future. The
Commission will also address the issue of any field  upgrade option  at that  time.

2 The grantee must identify the specific expertise and the training required by the installers for installing these

types of devices.

3 In some instances it is possible that a device may be within 35 km of multiple TDWRs. In this case the device

must ensure that it avoids operation within 30 MHz for each of the TDWRs. This requirement applies even if the
master is outside the 35 km radius but communicates with outdoor clients which may be within the 35 km
radius of the TDWRs.

4 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.

• 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

• 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

• 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.