Not to pile on but our EMC lab has performed testing on a lot of equipment used in an Ambulance and it is always Class B. The reason I was told was because ambulances can go into Residential Areas.
We have also tested DC Outboard Trolling Motors for boats which are also class B because residential homes can be on the water. And boats can operate near homes. So if a product can be used within or near a residential area most likely it will have to meet the Class B emissions limits. Otherwise you will have to have a strong argument of why your product is not likely to be used near residential areas. The Other Brian -----Original Message----- From: Rodney Davis [mailto:[email protected]] Sent: Friday, January 29, 2016 3:10 PM To: [email protected] Subject: Re: [PSES] [EXTERNAL] [PSES] AU CISPR 22 Class B Interpretation Wow how we easily get off topic. What about the simple definition Class A.... Such equipment should not be restricted in its sale but the following warning shall be included in the instructions for use: Even the authorities indicated Class A in an option but SUGGESTED class B. Good luck... not a black and white answer Rodney Davis ________________________________________ From: Carl Newton <[email protected]> Sent: Friday, January 29, 2016 2:25 PM To: [email protected] Subject: Re: [PSES] [EXTERNAL] [PSES] AU CISPR 22 Class B Interpretation Brian, I disagree that the fact that this device is an automotive device excludes it from the scope of CISPR 22. ITE is defined primarily by the functionality of the device (displays, stores, communicates, etc). ACMA doesn't exclude vehicles from the requlations. If vehicle accessory manufacturers belong to one of several industry groups and the device is in compliance with that groups relevant standard, then the ACMA regulation need not apply. But that would be more costly than applying one of the ACMA accepted standards: http://www.acma.gov.au/~/media/Technical%20Regulation%20Development/Regulation/pdf/EMC_Standards_List_25May15%20pdf.pdf Also note that in the OP I stated the the device has been in use in these markets within USA/CAN/EU for years with no interference problems. Finally, the customer received quotes from three AU labs and all three suggested that CISPR 22 be applied. Thanks for your reply, Carl On Fri, 29 Jan 2016 13:23:10 -0500, Brian O'Connell <[email protected]> wrote: > Correct - CISPR22 not scoped for automotive end-use installation. And > there is additional stuff for ambulance (60601-1-2), where there are > additional immunity and emissions requirements. Also, class A stuff > will probably degrade P25 and TETRA radio systems. > > Methinks mundane ACMA requirements not main problem. Need to look at > particular specs for police and fire communications. > > Brian > > -----Original Message----- > From: Gary McInturff [mailto:[email protected]] > Sent: Friday, January 29, 2016 10:03 AM > To: [email protected] > Subject: Re: [PSES] [EXTERNAL] [PSES] AU CISPR 22 Class B > Interpretation > > These vehicles travel between residential and commercial zones on a > regular basis, so on that alone I would agree with the class B > assessment, but I'm wondering if you don't have lots of other EMC > issues to deal with - automotive immunity etc. > > The only time I've personally seen an exemption for Class A in a > residential zone was for telecommunications equipment installed into a > room or facility owned by a telecom company. Doesn't mean there aren't > other exemptions it just means I am unaware of them. So I think you > stuck with Class B IMHO > > -----Original Message----- > From: Carl Newton [mailto:[email protected]] > Sent: Friday, January 29, 2016 9:10 AM > To: [email protected] > Subject: [EXTERNAL] [PSES] AU CISPR 22 Class B Interpretation > > Group, > > My customer builds vehicular laptop and tablet docking stations > intended for hard mounted use within emergency vehicles such as police > and ambulance, as well as work trucks and forklifts. The vehicular > power supply narrowly missed CISPR 22 radiated Class B limits. Then > their AU Responsible Party told us they called the ACMA and they > "insisted" this is a Class B device. I then sent my own request to > ACMA and received the reply below. > > In my opinion the ACMA individual is clearly biased toward the Class B > rating, but the fact that he leaves the door open to the Class A > rating is enough proof for me that he agrees that it is a Class A device. > However, my customer is looking for safety in numbers. The author > raises a valid note of caution concerning receivers within vehicles, > but these systems are already compliant with CISPR 25 and are widely > used within North America and Europe with no interference problems so > we're not concerned with that warning. > > I would appreciate it if some of you would review this information and > provide your professional opinion as to whether vehicle mounted ITE > qualifies as Class A or Class B: > > +++++++++++++++ > > Dear Mr Newton > > Clause 4.1 of AS/NZS CISPR 22 (which is identical to CISPR 22, Ed. 6.0 > (2008)) includes the following; > > Class B ITE is intended primarily for use in the domestic environment > and may include: > > - Personal computers and auxiliary equipment. > > Note: The domestic environment is an environment where the use of > broadcast and television receivers may be expected within distances of > 10 m of the apparatus concerned. > > Given that the class B limits apply to "personal computers" (which > would also include "tablets") it would seem logical that your mounting > stations "for computers and tablets" (which I would think fall within > the definition of "auxiliary equipment") should comply with the same > limits as the devices they are intended to hold. > > I would also think that, because police and ambulance vehicles will > probably have a broadcast (AM/FM) receiver installed in them this > would probably constitute a "domestic environment". I would also > question whether it would be prudent to have a device meeting the > class A limits installed in a vehicle that relies heavily on two-way > radiocommunications equipment where said device may interfere with the > operation of this on-board radiocommunications equipment. > > Having said that, clause 4.2 of AS/NZS CISPR 22 includes the > following; > > Class A ITE is a category of all other ITE which satisfies the class A > ITE limits but not the class B ITE limits. Such equipment should not > be restricted in its sale but the following warning shall be included > in the instructions for use: > > Warning > > This is a class A product. In a domestic environment this product may > cause radio interference in which case the user may be required to > take adequate measures. > > It is up to you whether you wish to comply with the class A or the > class B limits however, I would personally err on the side of caution > - if an ambulance or a police car were unable use its > radiocommunications equipment and it turned out it was due to > interference from your device the legal ramifications could be costly. > > Regards > > XXXXXXXXXX XXXXXXXXX > Technical Regulation Development Section Australian Communications & > Media Authority > > ++++++++++++++++++++++ > > Thanks group, > > Carl > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. To post a message to the list, send your > e-mail to <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities > site at http://product-compliance.oc.ieee.org/ can be used for > graphics (in well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher: <[email protected]> > David Heald: <[email protected]> -- Using Opera's mail client: http://www.opera.com/mail/ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> ________________________________ NOTE: This e-mail (including any attachments) is for the sole use of the intended recipient(s) and may contain information that is confidential and/or protected by legal privilege. Any unauthorized review, use, copy, disclosure or distribution of this e-mail is strictly prohibited. If you are not the intended recipient, please notify Mitel immediately and destroy all copies of this e-mail. Mitel does not accept any liability for breach of security, error or virus that may result from the transmission of this message. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
