Thanks to Grace the following link from her sheds new light on the modular
transmitter. I have only glanced through the document but there appears to
be cases where shielding is not required.
For K.Balasubramanian......................I would go to the FCC with your
question and request an interpretation. Remember that ONLY the FCC can
interpret its own rules (not TCBs). Everything else is an opinion.
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=======================================
=========================================
----- Forwarded by Robert E. Heller/US-Corporate/3M/US on 09/18/2007 07:13
AM -----
"Grace Lin"
<gracelinnj@gmail
.com> To
"rehel...@mmm.com"
09/18/2007 06:45 <rehel...@mmm.com>
AM cc
Subject
Re: RFID Modular FCC approval : Is
shielding mandatory?
Found.
http://fjallfoss.fcc.gov/edocs_public/attachmatch/FCC-07-56A1.pdf
On 9/18/07, rehel...@mmm.com <rehel...@mmm.com> wrote:
Grace, thanks for the info but I cannot find the reference that you
mention. Can you provide a link to the "no shielding" modification to
modular transmitters?
Thanks,
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=====================================
=======================================================
"Grace Lin"
<gracelinnj@gmail
.com> To
Sent by: " kbalasubraman...@scmmicro.co.in"
emc-p...@ieee.org <kbalasubraman...@scmmicro.co.in>
cc
ieee <emc-p...@ieee.org>
09/18/2007 05:46 Subject
AM Re: RFID Modular FCC approval : Is
shielding mandatory?
There is an updated official document issued by the FCC on April 23, 2007
in regard to the module approval. The document number is "ET Docket No.
03-201". I have seen a device being certified based on this document
(without RF shielding enclosure).
Grace
On 9/18/07, kbalasubraman...@scmmicro.co.in <
kbalasubraman...@scmmicro.co.in > wrote:
Dear Experts,
For one of our RFID product (13.56 MHz FCC Part 15 sub part C
intentional radiating device) we look for modular approval. There is no
separate enclosure for this product. There is only one PCBA with USB
connector for the host connectivity. This PCBA will get assembled in the
OEM customer equipment. The TCB with which we interacted interprets the
below statement in the document "FCC-DA-00-1407.pdf" as "shield is
mandatory around the PCBA".
"1. The modular transmitter must have its own RF shielding. This is
intended to ensure that the module does not have to rely upon the
shielding
provided by the device into which it is installed in order for all
modular
transmitter emissions to comply with Part 15 limits. It is also intended
to
prevent coupling between the RF circuitry of the module and any wires or
circuits in the device into which the module is installed. Such coupling
may result in noncompliant operation."
The PCBA will get assembled into a big equipment and that OEM
equipment will be certified. The PCBA is expected to meet part 15
requirements, why a shield is mandatory if compliance can be obtained
even
without a shielding. What does shielding here means? Our USB cable is a
shielded cable.
I request you to clarify this.
Sincerely
K.Balasubramanian
Manager - Hardware Support.
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