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TCB Sharing of FCC KDBs

TCB Sharing of FCC KDBs. Michael Derby TCB Council Chairman 9 th April 2014. Introduction. Overview of the main FCC KDB types General KDB enquiries Proposal for improvement and education of our industry Examples Feedback. KDB Types. Main types of KDB sent from the FCC

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TCB Sharing of FCC KDBs

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  1. TCB Sharing ofFCC KDBs Michael Derby TCB Council Chairman 9th April 2014 TCB Council

  2. Introduction • Overview of the main FCC KDB types • General KDB enquiries • Proposal for improvement and education of our industry • Examples • Feedback TCB Council

  3. KDB Types • Main types of KDB sent from the FCC • General information sent by the FCC • KDB 558074 for DTS, KDB 447498 for RF Exposure • Response to enquiry; specific to project • Model XYZ does ABC; can I proceed with this result? • FCC will reply; specific to that project • Will include KDBs such as PBA • Do not share these KDB responses TCB Council

  4. KDB Types • Main types of KDB sent from the FCC • Response to enquiry; general guidance • In general, with “X” situation; what do I do? • Not project specific (even if you asked because of a project!) • FCC will reply; general interpretation of their rules • Often very useful to everyone • This is what we’re talking about! TCB Council

  5. General KDB Enquiries • Sent to the FCC by a TCB, Test Lab or Manufacturer; for general guidance • Not specific to one project or model • Useful, informative guidance from the FCC • Would benefit the whole industry • Note that if the KDB guidance is ‘restrictive’ in any way, then it may be advantageous to share this! • This could also apply to guidance from IC TCB Council

  6. KDB Sharing Proposal • We propose to gather these and share • Recipient sends them to the TCB Council • We e-mail to members, if appropriate • We present details at the subsequent workshop • At the time of writing these slides, the exact format has yet to be agreed with the FCC and Industry Canada TCB Council

  7. Examples • Three examples of what we mean • Full KDB text not included at this time • Full KDB may be e-mailed to TCBC membership with agreement from the FCC and the company who submitted the KDB enquiry • Text may be copied from original KDB to provide anonymity in certain cases TCB Council

  8. Limited Modular Approval • Can a module without a shield be tested in a stand-alone configuration, for LMA? • FCC: “No” • Limited Modules must be tested in a typical host device and/or configuration • For a module with no shield, this would mean testing must be performed with the module ‘inside’ the host • LMA is literally limited to a specific host or group • Module Grantee is responsible for compliance of the module in the final host product, not the OEM TCB Council

  9. Non-USA Frequency Changes • Changing non-USA frequency band hardware such as 900 MHz / 1800 MHz components • Can this be a Permissive Change because those bands are not listed on the FCC Grant? • FCC: This requires a new FCC ID • This cannot be a Permissive Change • Certification covers all transmitter hardware • Changes would make it “non-identical” TCB Council

  10. DTS Duty Cycle and 15.35 • KDB 558074 for DTS states that spurious emissions cannot apply 15.35(c) duty cycle • Can we use it for devices with fixed duty cycle? • FCC: This is an acceptable deviation • 15.35(c) can be applied to maximum duty cycle • Duty cycle must be source based (hard-wired) • Expect modification in next KDB 558074 TCB Council

  11. Useful Proposal? • What do you think? • Do you think this is useful? • Would you be happy to receive this information? • Would you be happy to send this information? • Please send information, concerns, suggestions; and KDB replies! to the TCB Council TCB Council

  12. Thank You Michael Derby TCB Council, Chairman michaeld@acbcert.com TCB Council

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