I saw a piece on on this type of mower on one of the Dateline or other news
formats.
The one displayed also had the ability to be operated remotely by the owner to
trim
etc. In this case, the hand held transmitter would be an intentional radiator.
George Alspaugh
---------------------- Forwarded by George Alspaugh/Lex/Lexmark on 10/29/2001
11:30 AM ---------------------------
woods%sensormatic....@interlock.lexmark.com on 10/29/2001 10:09:45 AM
Please respond to woods%sensormatic....@interlock.lexmark.com
To: emc-pstc%majordomo.ieee....@interlock.lexmark.com
cc: (bcc: George Alspaugh/Lex/Lexmark)
Subject: RE: Keep off the grass: RF emissions!
If it is an intentional radiator and operates above 9 kHz, it is considered
to be a transmitter. If so, it is considered to be an inductive loop short
range device in Europe and subject to EN 300330-1 and -2 for radio emissions
and EN 301489-1 and -3 for spurious emissions and immunity. FCC Part 15
rules applies in the US and Industry Canada RSS-210 applies in Canada.
However, one might be able to construct a reasonable argument that the
device is not an intentional radiator because the signal is inductively
coupled to the mower and that any emissions outside the boundary is
unintentional. The problem with the argument is that the loop and mower are
not physically attached or in proximity all of the time.
Richard Woods
Sensormatic Electronics
-----Original Message-----
From: Massimo Polignano [mailto:massimo.polign...@esaote.com]
Sent: Monday, October 29, 2001 9:08 AM
To: emc-p...@majordomo.ieee.org
Subject: Keep off the grass: RF emissions!
Hello everybody!
A friend of mine, overthinking of the breadth of my knowledge, is asking me
for some advise about the applicable standards to a rather unusual piece of
equipment. It is a "auto mower" intended to be programmed by the user to
cut within a given garden area. It makes use of a boundary loop wire to
exchange information (by means of RF TX-RX) about the actual position and
the cutting area. It is provided also with a docking station where it goes
automatically to recharge its battery.
Now the questions.
Is there any applicable product standard dealing with EMC and safety of
that kind of devices?
Do you think it is to be handled as an intentional RF transmitter,
similarly to an ISM?
Let's consider it is not an intentional transmitter, as the emission
depends on the broadness of the reference loop, does it make sense to do
measurement at three or ten meters?
Do you think immunity as well can be anlysed regardless the actual
installation?
As my field of interest is bounded to electromedical devices and actually I
have no garden to take care of, can someone out of there help my friend to
send this problem to grass?
Thanks in advance.
m.p.
-------------------------------------------------------------
ESAOTE S.p.A. Massimo Polignano
Research & Product Development Design Quality Control Mngr
Via di Caciolle,15 tel:+39.055.4229402
I- 50127 Florence fax:+39.055.4223305
e-mail: massimo.polign...@esaote.com
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