Dan,
I'm not sure if this is what's in the 97 version. 
___________________________________________________
1999 version

(b) A digital device used exclusively
as an electronic control or power sys-tem
utilized by a public utility or in an
industrial plant. The term public utility
includes equipment only to the extent
that it is in a dedicated building or
large room owned or leased by the util-ity
and does not extend to equipment
installed in a subscriber's facility.
(c) A digital device used exclusively
as industrial, commercial, or medical
test equipment.
(d) A digital device utilized exclu-sively
in an appliance, e.g., microwave
oven, dishwasher, clothes dryer, air
conditioner (central or window), etc.
_____________________________________________________

You can download the latest rules (99version from the web www.fcc.gov)
My interpretation is :
Your point 1, is not applicable.
Points 2 and 3 are right. Point 2: (public utility) is defined in the 1999
version
Point 3 : (Industrial) is actually Industrial, commercial or medical TEST
equipment.
You are right, it is broad. But read this
_________________________________________________
The operator of the exempted
device shall be required to stop oper-ating
the device upon a finding by the
Commission or its representative that
the device is causing harmful inter-ference.
Operation shall not resume
until the condition causing the harm-ful
interference has been corrected. Al-though
not mandatory, it is strongly
recommended that the manufacturer of
an exempted device endeavor to have
the device meet the specific technical
standards in this part.
________________________________________________

Hope this helps

Praveen Rao
[email protected]






-----Original Message-----
From: Dan Kinney (A) [mailto:[email protected]]
Sent: Thursday, 2 November 2000 7:41 AM
To: [email protected]
Subject: FCC Part 15 exempted devices



I need help with interpretation of one paragraph in FCC Part 15.  I have the
1 Oct 97 version.  Paragraph 15.103 (b) says a digital device is exempted
from Part 15 if it is "used exclusively as an electronic control or power
system utilized by a public utility or in an industrial plant."  One could
interpret this several ways to include:

A digital device is exempted if it is used exclusively as:
1) an electronic control
2) an electronic control utilized by a public utility only
3) an electronic control utilized in an industrial plant

The first interpretation is pretty broad and would exclude a lot of
equipment.  The third interpretation is broad but causes the manufacturer of
control equipment to somehow make certain his products do not end up in use
anywhere except in an industrial plant.  The second interpretation is narrow
and might be the real intent of this exemption.

I would appreciate any advice on how any of you would interpret this. 
Thanks in advance.
Dan Kinney
Horner APG



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