[PSES] ISM-use of a non-ISM frequency

2015-01-19 Thread Niels Hougaard
Dear list members,

 

Product in question is an ISM equipment. Classified according to EN
55011:2009/CISPR 11:2009 as class A, group 1 equipment. Using RF energy for
a kind of skin treatment, with a probe at the end of a 1-1,5 m long cable.

 

The EN 55011:2009/CISPR 11:2009 has increased radiation limits at the ISM
frequencies, which are listed in table 1, but the product is using a
frequency that is not in the table.

 

Product is at stand by when the user is not pressing a button, emission
being well under the limits.

When the button is pressed, the frequency in use is about 5-15 dB above the
limits (radiated/conducted). Also when all realistic means for reducing the
emission have been introduced (including a good shielding of the cable, and
reducing the power as much as possible).

The button is pressed some seconds in periods.

 

Using another frequency for the RF is unfortunately not possible.

 

I think that asking a notified body and/or for a special
permission/acceptance is a last chance for being able to CE-mark the
product.

 

Do you see others possibilities? Any experiance with such a permission, if
at all possible?

 

Regards,

Niels

 

Niels Hougaard

Bolls ApS · Ved Gadekæret 11F, Slagslunde · DK-3660 Stenløse
Tlf. +45 48 18 35 66  ·  Direkte +45 5379 6991

 mailto:i...@bolls.dk i...@bolls.dk  ·
http://www.bolls.dk/?utm_source=hjemmesideutm_medium=e-mail-signaturutm_c
ampaign=hjemmeside www.bolls.dk



 


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Re: [PSES] FCC and immunity

2015-01-19 Thread Nyffenegger, Dave
The immunity part goes something like This device must accept harmful 
interference

-Dave

-Original Message-
From: Amund Westin [mailto:am...@westin-emission.no] 
Sent: Monday, January 19, 2015 7:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] FCC and immunity

Still no EMC immunity requirements within FCC Part 15, right?
Is immunity on the agenda or does it seems that only radiated and conducted 
emission will be the tests for the nearest future?

Thanks.

#Amund

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[PSES] FCC and immunity

2015-01-19 Thread Amund Westin

Still no EMC immunity requirements within FCC Part 15, right?
Is immunity on the agenda or does it seems that only radiated and 
conducted emission will be the tests for the nearest future?


Thanks.

#Amund

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Re: [PSES] FCC and immunity

2015-01-19 Thread Bill Stumpf
That is correct. The FCC does not regulate immunity of equipment.  The FCC's 
function is to regulate interstate and international communications and promote 
the effective and efficient use of the frequency spectrum in US territories 
(and of course enforce FCC regulations!).


Bill Stumpf
D.L.S. Electronic Systems, Inc.
166 South Carter Street
Genoa City WI 53128
Ph: 262-279-0210





-Original Message-
From: Paasche, Dieter [mailto:dieter.paas...@christiedigital.com] 
Sent: Monday, January 19, 2015 10:33 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] FCC and immunity

It is my impression that FCC's would leave the immunity as a self-regulated 
requirement between manufacturer and user and just mentioned that the device 
must accept harmful interference.

Sincerely, 

Dieter Paasche
Advanced Product Developer, Electrical
CHRISTIE
809 Wellington Street North
Kitchener, Ontario  N2G 4Y7
Phone: +1 519-744-8005 Ext 7211
www.christiedigital.com

This e-mail message (including attachments, if any), is confidential. Any 
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From: Amund Westin [mailto:am...@westin-emission.no]
Sent: Monday, January 19, 2015 7:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] FCC and immunity

Still no EMC immunity requirements within FCC Part 15, right?
Is immunity on the agenda or does it seems that only radiated and conducted 
emission will be the tests for the nearest future?

Thanks.

#Amund

-

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[PSES] SV: [PSES] FCC and immunity

2015-01-19 Thread Amund Westin
Many thanks for all inputs!

#Amund




-Opprinnelig melding-
Fra: Bill Stumpf [mailto:bstu...@dlsemc.com] 
Sendt: 19. januar 2015 17:51
Til: EMC-PSTC@LISTSERV.IEEE.ORG
Emne: Re: [PSES] FCC and immunity

That is correct. The FCC does not regulate immunity of equipment.  The FCC's
function is to regulate interstate and international communications and
promote the effective and efficient use of the frequency spectrum in US
territories (and of course enforce FCC regulations!).


Bill Stumpf
D.L.S. Electronic Systems, Inc.
166 South Carter Street
Genoa City WI 53128
Ph: 262-279-0210





-Original Message-
From: Paasche, Dieter [mailto:dieter.paas...@christiedigital.com]
Sent: Monday, January 19, 2015 10:33 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] FCC and immunity

It is my impression that FCC's would leave the immunity as a self-regulated
requirement between manufacturer and user and just mentioned that the device
must accept harmful interference.

Sincerely, 

Dieter Paasche
Advanced Product Developer, Electrical
CHRISTIE
809 Wellington Street North
Kitchener, Ontario  N2G 4Y7
Phone: +1 519-744-8005 Ext 7211
www.christiedigital.com

This e-mail message (including attachments, if any), is confidential. Any
unauthorized use, distribution or disclosure is prohibited.  If you have
received this e-mail message in error, please notify the sender by reply
e-mail or telephone and delete it and any attachments from your computer
system and records.

From: Amund Westin [mailto:am...@westin-emission.no]
Sent: Monday, January 19, 2015 7:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] FCC and immunity

Still no EMC immunity requirements within FCC Part 15, right?
Is immunity on the agenda or does it seems that only radiated and conducted
emission will be the tests for the nearest future?

Thanks.

#Amund

-

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Re: [PSES] FCC and immunity

2015-01-19 Thread Paasche, Dieter
It is my impression that FCC's would leave the immunity as a self-regulated 
requirement between manufacturer and user and just mentioned that the device 
must accept harmful interference.

Sincerely, 

Dieter Paasche
Advanced Product Developer, Electrical
CHRISTIE
809 Wellington Street North
Kitchener, Ontario  N2G 4Y7
Phone: +1 519-744-8005 Ext 7211
www.christiedigital.com

This e-mail message (including attachments, if any), is confidential. Any 
unauthorized use, distribution or disclosure is prohibited.  If you have 
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or telephone and delete it and any attachments from your computer system and 
records.

From: Amund Westin [mailto:am...@westin-emission.no] 
Sent: Monday, January 19, 2015 7:22 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] FCC and immunity

Still no EMC immunity requirements within FCC Part 15, right?
Is immunity on the agenda or does it seems that only radiated and conducted 
emission will be the tests for the nearest future?

Thanks.

#Amund

-

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Re: [PSES] FCC and immunity

2015-01-19 Thread Mike Violette
The FCC is charged with protection of the spectrum and licensed services, 
primarily.

They leave the issue of immunity 'to the market.'


Mike Violette
Washington Laboratories  American Certification Body
mi...@wll.com
+1 240 401 1388



On Jan 19, 2015, at 7:21 AM, Amund Westin wrote:

 Still no EMC immunity requirements within FCC Part 15, right?
 Is immunity on the agenda or does it seems that only radiated and conducted 
 emission will be the tests for the nearest future?
 
 Thanks.
 
 #Amund
 
 -
 
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Re: [PSES] FCC and immunity

2015-01-19 Thread Ed Price
Very broadly,  the USA FCC regulates (both intentional and unintentionable)
emitters and not receivers when it promotes that efficient use concept.
That's the way that the underlying Communications Act is applied. OTOH, they
sometimes do get into control of receivers when they specify technical
content like blocked frequency bands, minimum signal-to-noise ratios and
tuning requirements. If that type of regulation on receivers was acceptable,
then I don't see any barrier to the FCC someday deciding to impose immunity
regulations on communication receivers. However, it would be a philosophical
reach to try to apply immunity to all electronic devices in general.

 

Ed Price
WB6WSN
Chula Vista, CA USA

 

-Original Message-
From: Bill Stumpf [mailto:bstu...@dlsemc.com] 
Sent: Monday, January 19, 2015 8:51 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] FCC and immunity

 

That is correct. The FCC does not regulate immunity of equipment.  The FCC's
function is to regulate interstate and international communications and
promote the effective and efficient use of the frequency spectrum in US
territories (and of course enforce FCC regulations!).

 

 

Bill Stumpf

D.L.S. Electronic Systems, Inc.

166 South Carter Street

Genoa City WI 53128

Ph: 262-279-0210

 

 

 

 

 

-Original Message-

From: Paasche, Dieter [ mailto:dieter.paas...@christiedigital.com
mailto:dieter.paas...@christiedigital.com]

Sent: Monday, January 19, 2015 10:33 AM

To:  mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG

Subject: Re: [PSES] FCC and immunity

 

It is my impression that FCC's would leave the immunity as a self-regulated
requirement between manufacturer and user and just mentioned that the device
must accept harmful interference.

 

Sincerely, 

 

Dieter Paasche

Advanced Product Developer, Electrical

CHRISTIE

809 Wellington Street North

Kitchener, Ontario  N2G 4Y7

Phone: +1 519-744-8005 Ext 7211

 http://www.christiedigital.com www.christiedigital.com


-

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Re: [PSES] SELV rated power supplies

2015-01-19 Thread Richard Nute
Hi Dave:


EN60950-1 is not equal to SELV.

Certifications and reports do not necessarily
indicate outputs are SELV, although careful
reading of the test results can conclude that the
outputs are SELV or not.

Not all outputs of EN60950-1 power supplies are
SELV and need not be.  The power supplies are
nevertheless EN60950-1 power supplies.

The requirement for SELV is whether or not the
circuit is accessible.  Accessible circuits must
be SELV.  

To perform a single-fault test, one must
understand how the circuits operate, and what
faults could cause the output to possibly exceed
SELV limits.  In today's power supply topology,
such circuit analysis is not necessarily
straight-forward.

Your statement

Therefore my contention is it cannot be assumed
that a power supply listed as EN 60950-1 compliant
on a manufacturer's data sheet is also SELV
compliant unless explicitly stated so or proven in
the test report results.

is correct.


Best regards,
Rich

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