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On 8/19/2010 1:36 PM, Nial Stewart wrote: >> I take it all back! > > All of the sarcy comments, ever? > > :-) > > > Nial. > > No, only last night's drunken paranoia!Article: 148751
On 8/18/2010 5:11 PM, Fredxx wrote: > I have a small electronic unit which needs some CE compliance testing. > > Cost is a major issue and was wondering if anyone here can offer advice on > an affordable solution. > > Hi Fred, I have no idea if this is appropriate to your situation, but you might avoid a lot of the CE compliance issues by using a wall-wart or somesuch which is already CE marked. Then all the mains powered stuff is pre-certified by someone else. Get one with a ferrite thingy near the DC jack! HTH., Syms.Article: 148752
"Fredxx" <fredxx@spam.com> wrote in message news:i4jb3m$5nq$2@news.eternal-september.org... > I am aware that you can self certify, but I wanted to collate some > evidence that it would actually pass the EMC requirements, especially for > radiated emissions. I'm very confident about the rest. There is a few hands-on test that I always do to get an idea if my design has weaknesses: -Does it work when I call someone with my cellphone and put the phone over my electronics (remember to make noise to get max radiation). -Does it block my cellphone? You may try a FM radio closeby to see how bad it is.. Compare with similar products. > I can see the cost of a spectrum analyser is a fraction of the cost of any > assessment or testing by an EMC lab. Many thanks for the pointer and am > looking on eBay for suitable equipment. If your project cant afford a test, then its unlikely that you will ever get sued for not being within specs. You are just "noise" in the marked. On the other hand, be sure that nobody can get killed by touching your product. And that it doesnt burn down the building if something fails. Then you can put the CE mark on it and sleep well at nights.Article: 148753
Ive seen some different blasters now and they are all missing ESD protection on the jtag pins. A colleague has blown quite a few now. The jtag signals only have a small L and then goes direct into level translators that has ESD warning in their datasheets. Does anyone know of a protected or opto isolated device within a reasonable price?Article: 148754
On 8/19/2010 2:45 PM, Morten Leikvoll wrote: > Ive seen some different blasters now and they are all missing ESD protection > on the jtag pins. A colleague has blown quite a few now. The jtag signals > only have a small L and then goes direct into level translators that has ESD > warning in their datasheets. Does anyone know of a protected or opto > isolated device within a reasonable price? > > Maybe solder these on? http://www.nxp.com/documents/data_sheet/PESD5V0X1BQ_PESD5V0X1BT.pdf HTH., Syms.Article: 148755
"Symon" <symon_brewer@hotmail.com> wrote in message news:i4jc0c$e1a$1@news.eternal-september.org... > On 8/18/2010 5:11 PM, Fredxx wrote: >> I have a small electronic unit which needs some CE compliance testing. >> >> Cost is a major issue and was wondering if anyone here can offer advice >> on >> an affordable solution. >> >> > Hi Fred, > I have no idea if this is appropriate to your situation, but you might > avoid a lot of the CE compliance issues by using a wall-wart or somesuch > which is already CE marked. Then all the mains powered stuff is > pre-certified by someone else. Get one with a ferrite thingy near the DC > jack! Many thanks. I was already intending to use an external wall-wart. As you say this circumvents much testing. The total power dissipation is likely to be around 3W in any case.Article: 148756
"Morten Leikvoll" <mleikvol@yahoo.nospam> wrote in message news:dPqdnSoZacs3qfDRnZ2dnUVZ8iSdnZ2d@lyse.net... > "Fredxx" <fredxx@spam.com> wrote in message > news:i4jb3m$5nq$2@news.eternal-september.org... > >> I am aware that you can self certify, but I wanted to collate some >> evidence that it would actually pass the EMC requirements, especially for >> radiated emissions. I'm very confident about the rest. > > There is a few hands-on test that I always do to get an idea if my design > has weaknesses: > -Does it work when I call someone with my cellphone and put the phone over > my electronics (remember to make noise to get max radiation). > -Does it block my cellphone? You may try a FM radio closeby to see how bad > it is.. Compare with similar products. > >> I can see the cost of a spectrum analyser is a fraction of the cost of >> any assessment or testing by an EMC lab. Many thanks for the pointer and >> am looking on eBay for suitable equipment. > > If your project cant afford a test, then its unlikely that you will ever > get sued for not being within specs. You are just "noise" in the marked. > This is for a niche market, though any market has competitors who can play informer to the authorities. It's difficult to justify a cost of several £000s on a relatively small unit where the maket may be just 100 per year. > > On the other hand, be sure that nobody can get killed by touching your > product. And that it doesnt burn down the building if something fails. > Then you can put the CE mark on it and sleep well at nights. > I would put my hand up and say that good safe working practices have been followed. Also the power supply will be a wall-wart, which will have its own certification.Article: 148757
On 19 Aug., 15:45, "Morten Leikvoll" <mleik...@yahoo.nospam> wrote: > Ive seen some different blasters now and they are all missing ESD protect= ion > on the jtag pins. A colleague has blown quite a few now. The jtag signals > only have a small L and then goes direct into level translators that has = ESD > warning in their datasheets. Does anyone know of a protected or opto > isolated device within a reasonable price? Maybe you want to try our EEBlaster: http://www.entner-electronics.com/tl/index.php/eeblaster.html Our level-translator have following specifications: ESD Protection Exceeds JESD 22 =96 8000-V Human-Body Model =96 150-V Machine Model =96 1000-V Charged-Device Model (Because of series-resistors on the PCB, it will be even higher in real life...) We have heard of no field-failure of any EEBlaster up to now. Regards, ThomasArticle: 148758
Sink0 wrote: > Thank you very much for the information. I am going to talk with my other > team members to discuss that. Can you answer me if you can write down on > the bill a lower price than the board cost? Thats becouse i live in Brazil > and here i would have to pay 88% of taxes to goverment.. Do you really think he wants to help you with tax fraud? And do you expect a public commitment to underhand dealings in this newsgroup? -- Frank Buss, fb@frank-buss.de http://www.frank-buss.de, http://www.it4-systems.deArticle: 148759
>Do you really think he wants to help you with tax fraud? And do you expect >a public commitment to underhand dealings in this newsgroup? > >-- >Frank Buss, fb@frank-buss.de >http://www.frank-buss.de, http://www.it4-systems.de > Yea thats true, i am sorry.. i did a great mistake on that post, even if it was not about this subject, this newsgroup is not suposed to be used for comercial transactions or commitments. Sorry. Is there any way to delet taht post? Back to FPGA design... I am using a cyclone II for my design with 208 Pins.. but just Bank 1 and Bank 3 have PCI clamp diodes.. Am i going to have any problem to use Banks that are placed physicaly at the oposit side of each other to run a PCI bus? As i am using quickswitchs approach, do i really need PCI clamp diodes? And is it really recomended to place all the PCI data IOs (32 bit bus) at the same bank? Thank you, sorry about my other post again! --------------------------------------- Posted through http://www.FPGARelated.comArticle: 148760
"Fredxx" <fredxx@spam.com> wrote: > >"Nico Coesel" <nico@puntnl.niks> wrote in message >news:4c6c3aef.2204064734@news.planet.nl... >> <fredxx@spam.com> wrote: >> >>> >>>I have a small electronic unit which needs some CE compliance testing. >>> >>>Cost is a major issue and was wondering if anyone here can offer advice on >>>an affordable solution. >> >> If you are located within Europe CE conformation is just a matter of >> putting a CE sticker on your product. It really is simple as that. The >> sticker says you take responsibility for the product. >> >> If you really want compliance testing then it is advisable to find a >> company with an EMC test setup to do some pre-compliance testing. This >> will tell you where the problem areas are. Next you'll need a spectrum >> analyzer to find the problem areas in your product. >> >> This is a very cheap one but it does the job: >> http://www.door2doorshop.com/wholesale/Atten-Spectrum-Analyzer-AT6011-213.html >> >> If you shop on Ebay you can get these for half the price (new >> ofcourse). >> >> The last step is shopping around for a cheap EMC lab. >> > >I am aware that you can self certify, but I wanted to collate some evidence >that it would actually pass the EMC requirements, especially for radiated >emissions. I'm very confident about the rest. > >I can see the cost of a spectrum analyser is a fraction of the cost of any >assessment or testing by an EMC lab. Many thanks for the pointer and am >looking on eBay for suitable equipment. > >One thing that does bother me still, is sourcing wideband aerials suitable >for measure field strength. Don't bother. They will be more expensive than renting a lab to do pre-compliance testing. Without a properly shielded cage (which is difficult to construct anyway) it is difficult to test. For bench testing a small pick-up loop is much more usefull to identify the exact source of the excess radiation. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------Article: 148761
Price modification for duty and taxation is something we can't do for obvious reasons. We have met the issue of very high taxes in Brazil before and it's a very big barrier to get getting modern technology into your country. One thing you didn't say was if this for a commercial or academic project. We do have academic discounts for students and universities that pass validation criteria. On programming cables our USB Prog3 cable is an option with this board. It operates seemlessly with Xilinx software tools and doesn't need any other software or drivers other than come with Xilinx software. It's a similar price to the Chinese option. John Adair Enterpoint Ltd. On 19 Aug, 13:24, "Sink0" <sink00@n_o_s_p_a_m.n_o_s_p_a_m.gmail.com> wrote: > >I asked the office to check as the website stock levels are not > >totally live and accurate and we have had a run of sales on these > >lately. We have 2 Hollybush1 HB1-400C and 1 HB1-1500C and we can make > >more on our assembly line fairly quickly as we have stock for all of > >the parts for them. > > Thank you very much for the information. I am going to talk with my other > team members to discuss that. Can you answer me if you can write down on > the bill a lower price than the board cost? Thats becouse i live in Brazi= l > and here i would have to pay 88% of taxes to goverment.. My second proble= m > would be that i still need a Xilinx USB download cable (we do not have an= y > paralel potr available). A clone would cost me $80 with my usual chinese > eletronic supplier.. thats something i must take in consideration becouse > we already have an Altera one. > > Thank you very much for all the answers!! =A0 =A0 =A0 =A0 =A0 > > --------------------------------------- =A0 =A0 =A0 =A0 > Posted throughhttp://www.FPGARelated.comArticle: 148762
On Thu, 19 Aug 2010 08:21:41 +0100, "Michael Kellett" <nospam@nospam.com> wrote: > >"Nico Coesel" <nico@puntnl.niks> wrote in message >news:4c6c3aef.2204064734@news.planet.nl... >> <fredxx@spam.com> wrote: >> >>> >>>I have a small electronic unit which needs some CE compliance testing. >>> >>>Cost is a major issue and was wondering if anyone here can offer advice on >>>an affordable solution. >> >> If you are located within Europe CE conformation is just a matter of >> putting a CE sticker on your product. It really is simple as that. The >> sticker says you take responsibility for the product. >> >> If you really want compliance testing then it is advisable to find a >> company with an EMC test setup to do some pre-compliance testing. This >> will tell you where the problem areas are. Next you'll need a spectrum >> analyzer to find the problem areas in your product. >> >> This is a very cheap one but it does the job: >> http://www.door2doorshop.com/wholesale/Atten-Spectrum-Analyzer-AT6011-213.html >> >> If you shop on Ebay you can get these for half the price (new >> ofcourse). >> >> The last step is shopping around for a cheap EMC lab. >> >> -- >> Failure does not prove something is impossible, failure simply >> indicates you are not using the right tools... >> nico@nctdevpuntnl (punt=.) >> -------------------------------------------------------------- > >The two replies above do not accurately reflect the practical and legal >situation in the UK with regard to CE marking. >You can just put a sticker on your product and a declaration (mandatory) in >the manual and you may get away with it. If your product is investigated and >does not comply with the regulations then when they discover that you have >done no testing at all Trading Standards (the UK authority which enforces CE >marking of electrical and electronic devices) will throw the book at you. However this is extremely unlikely - it is a complaint-driven system, and Trading Standards have better things to do. Germany can be a bit riskier as I believe they do random test purchases, but in a niche market this is unlikely. >You need to test for radiated RF emmissions, susceptibility, electrostatic >discharge susceptibility (8kV sparks to any exposed part), power surges from >anins or power supply. Has anybody ever been done for non-safety critical products failing immunity? In practice it's a product quality issue. Waving a cellphone near it is as much of a test as needed to cover 99% of what it will see in the field. Immunity testing on something that presents no hazard is a ridiculous and unnceessary expense. > If you are connected to the mains you must also test >for mains pollution as well. Be aware that most approved PSUs are tested with resistive loads. In practice it is easy to make a supposedly compliant PSU kick out noise above limits with a moderately noisy load. And of course many cheap supposedly approved PSUs aren't.Article: 148763
On 18 Aug 2010 18:19:58 GMT, General Schvantzkoph <schvantzkoph@yahoo.com> wrote: >On Wed, 18 Aug 2010 17:11:21 +0100, Fredxx wrote: > >> I have a small electronic unit which needs some CE compliance testing. >> >> Cost is a major issue and was wondering if anyone here can offer advice >> on an affordable solution. > >You should contact a certification lab in your area. CE and UL are mostly >a lot of paperwork with a small amount of actual testing. They are >designed to be fee generators, and in CEs case trade barriers, do there >isn't going to be a cheap way to do it. FCC is easier because it's based >on physics not on the whims of bureaucrats, you can do FCC certification >in a few hours because it's just a matter of measuring the emissions of >the system, you are either within bounds or not. CE is no different. Once you've figured out what standards apply.Article: 148764
On Thu, 19 Aug 2010 14:11:58 +0100, "Fredxx" <fredxx@spam.com> wrote: > >"General Schvantzkoph" <schvantzkoph@yahoo.com> wrote in message >news:8d2mieFco2U4@mid.individual.net... >> On Wed, 18 Aug 2010 17:11:21 +0100, Fredxx wrote: >> >>> I have a small electronic unit which needs some CE compliance testing. >>> >>> Cost is a major issue and was wondering if anyone here can offer advice >>> on an affordable solution. >> >> You should contact a certification lab in your area. CE and UL are mostly >> a lot of paperwork with a small amount of actual testing. They are >> designed to be fee generators, and in CEs case trade barriers, do there >> isn't going to be a cheap way to do it. FCC is easier because it's based >> on physics not on the whims of bureaucrats, you can do FCC certification >> in a few hours because it's just a matter of measuring the emissions of >> the system, you are either within bounds or not. >> > >I have, and we're talking about £1,500 just for a pre-test, and £3,000 for >final testing and documents. the only difference between 'pre-test' and 'final test' is the test house's libility, A pragmatic approach is to book a day or half-day at a test house, test as much as you can & use the plots from that to self-certify.Article: 148765
>ROHS is easy to comply with if sourcing known components from reputable >companies. but nobody is ever going to find the odd bit of lead.Article: 148766
>> If your project cant afford a test, then its unlikely that you will ever >> get sued for not being within specs. You are just "noise" in the marked. >> > >This is for a niche market, though any market has competitors who can play >informer to the authorities. Who are probably running exactly the same risk as you. >It's difficult to justify a cost of several £000s on a relatively small unit >where the maket may be just 100 per year. > >> >> On the other hand, be sure that nobody can get killed by touching your >> product. And that it doesnt burn down the building if something fails. >> Then you can put the CE mark on it and sleep well at nights. >> > >I would put my hand up and say that good safe working practices have been >followed. Also the power supply will be a wall-wart, which will have its >own certification. Don't believe everything you read on PSU labels. Take one apart to check build quality.Article: 148767
On Thu, 19 Aug 2010 18:13:55 GMT, nico@puntnl.niks (Nico Coesel) wrote: >"Fredxx" <fredxx@spam.com> wrote: > >> >>"Nico Coesel" <nico@puntnl.niks> wrote in message >>news:4c6c3aef.2204064734@news.planet.nl... >>> <fredxx@spam.com> wrote: >>> >>>> >>>>I have a small electronic unit which needs some CE compliance testing. >>>> >>>>Cost is a major issue and was wondering if anyone here can offer advice on >>>>an affordable solution. >>> >>> If you are located within Europe CE conformation is just a matter of >>> putting a CE sticker on your product. It really is simple as that. The >>> sticker says you take responsibility for the product. >>> >>> If you really want compliance testing then it is advisable to find a >>> company with an EMC test setup to do some pre-compliance testing. This >>> will tell you where the problem areas are. Next you'll need a spectrum >>> analyzer to find the problem areas in your product. >>> >>> This is a very cheap one but it does the job: >>> http://www.door2doorshop.com/wholesale/Atten-Spectrum-Analyzer-AT6011-213.html >>> >>> If you shop on Ebay you can get these for half the price (new >>> ofcourse). >>> >>> The last step is shopping around for a cheap EMC lab. >>> >> >>I am aware that you can self certify, but I wanted to collate some evidence >>that it would actually pass the EMC requirements, especially for radiated >>emissions. I'm very confident about the rest. >> >>I can see the cost of a spectrum analyser is a fraction of the cost of any >>assessment or testing by an EMC lab. Many thanks for the pointer and am >>looking on eBay for suitable equipment. >> >>One thing that does bother me still, is sourcing wideband aerials suitable >>for measure field strength. > >Don't bother. They will be more expensive than renting a lab to do >pre-compliance testing. Without a properly shielded cage (which is >difficult to construct anyway) it is difficult to test. For bench >testing a small pick-up loop is much more usefull to identify the >exact source of the excess radiation. Yes - unless you live in the middle of the arctic, or down a mine, there is so much ambient that it's impossible to get any meaningful measurements outside of a shielded anechoic room.Article: 148768
>Price modification for duty and taxation is something we can't do for >obvious reasons. We have met the issue of very high taxes in Brazil >before and it's a very big barrier to get getting modern technology >into your country. One thing you didn't say was if this for a >commercial or academic project. We do have academic discounts for >students and universities that pass validation criteria. > >On programming cables our USB Prog3 cable is an option with this >board. It operates seemlessly with Xilinx software tools and doesn't >need any other software or drivers other than come with Xilinx >software. It's a similar price to the Chinese option. > Its for Academic Purposes on Universidade de São Paulo here in Brazil. Can you give me your e-mail for further questions? I just found out that i wont have the Quickswiths ICs on my hand fast enough becouse i am going to Spain at September 19 but would be very good to have the board on my hands 2 weeks before i go and it takes 3 weeks to arrive. Thank you! --------------------------------------- Posted through http://www.FPGARelated.comArticle: 148769
>>Price modification for duty and taxation is something we can't do for >>obvious reasons. We have met the issue of very high taxes in Brazil >>before and it's a very big barrier to get getting modern technology >>into your country. One thing you didn't say was if this for a >>commercial or academic project. We do have academic discounts for >>students and universities that pass validation criteria. >> >>On programming cables our USB Prog3 cable is an option with this >>board. It operates seemlessly with Xilinx software tools and doesn't >>need any other software or drivers other than come with Xilinx >>software. It's a similar price to the Chinese option. >> > >Its for Academic Purposes on Universidade de São Paulo here in Brazil. Can >you give me your e-mail for further questions? I just found out that i wont >have the Quickswiths ICs on my hand fast enough becouse i am going to Spain >at September 19 but would be very good to have the board on my hands 2 >weeks before i go and it takes 3 weeks to arrive. > >Thank you! > >--------------------------------------- >Posted through http://www.FPGARelated.com > Just to complement my last post, i think a CPLD board that could work as a PCI o local bus bridge would be a nice one too. With a very low price.. I could find one at Altera for 150 USD but i still have to solve tax problems over here. Cya! --------------------------------------- Posted through http://www.FPGARelated.comArticle: 148770
"Fredxx" <fredxx@spam.com> wrote in message news:i4jh01$ukp$1@news.eternal-september.org... > This is for a niche market, though any market has competitors who can play > informer to the authorities. I would not worry (I used to worry too). The authorities has a lot more important work to do than chasing low qty products that has a tiny bit more radiation than the papers allow.Article: 148771
In comp.arch.fpga, Morten Leikvoll <mleikvol@yahoo.nospam> wrote: > "Fredxx" <fredxx@spam.com> wrote in message > news:i4jh01$ukp$1@news.eternal-september.org... >> This is for a niche market, though any market has competitors who can play >> informer to the authorities. > > I would not worry (I used to worry too). The authorities has a lot more > important work to do than chasing low qty products that has a tiny bit more > radiation than the papers allow. They may not actively chase for such products, but when a complaint is made (by, for example, that competitor) they will have to follow that up. And although it may not happen very often, I have seen it happen, twice. And how do you know you're only 'a tiny bit' over the limits without actually measuring your device? Take a simple oscillator chip and connect it to the 'wrong' trace, emissions will go through the roof. There is no requirement to actually do measurements, you just have to be under the limits. How you make sure you are, is up to you. If you can calculate and simulate everything, that may be enough proof you honestly believe that your device is under the limits. I have not seen that happen, just measuring is usually simpler. And even good measurements are not a complete guarantee your device is always under the limits. These measurements are just scans through the required frequency range. And if your device produces short burst, they may be missed in those scans. But at least you have evidence that you did all you could to make sure your device is under the limits. -- Stef (remove caps, dashes and .invalid from e-mail address to reply by mail) The world needs more people like us and fewer like them.Article: 148772
Hi, I am looking for a low cost, small form factor video processing module. It should have single or dual analog inputs and analog output(s). A DSP (DaVinci, DM355, Sharc etc) will be required to do the video processing. Presence of an FPGA is not a must. Any suggestions........ ThanksArticle: 148773
One workmate of mine has given me a small clue of how the problem can be solved. The failing line is at the makefile. The following: mb-gcc -L"C:\Xilinx\12.1\ISE_DS\EDK\gnu\microblaze\nt\microblaze-xilinx-elf\include" -Wl,-T -Wl,../src/lscqagipt.ld -L../../empty_application_bsp_0/microblaze_0/lib -mxl-pattern-compare -mcpu=v7.30.a -mno-xl-soft-mul -o"LEDs.elf" $(OBJS) $(USER_OBJS) $(LIBS) Here the error is: /cygdrive/c/Xilinx/12.1/ISE_DS/EDK/gnu/microblaze/nt/bin/../lib/gcc/microblaze-xilinx-elf/4.1.2/../../../../microblaze-xilinx-elf/bin/ld: cannot find -lstdio.h which mainly tells that it can not find libstdio.a in the library folder. I have introduced in windows' environment variables the following path: C:\Xilinx\12.1\ISE_DS\EDK\gnu\microblaze\nt\microblaze-xilinx-elf\include but the error remains the same. In that folder there is no libstdio.a as well as in the rest of the EDK folders... really i do not know what to do at this point --------------------------------------- Posted through http://www.FPGARelated.comArticle: 148774
Best thing to do is contact through the general email boardsales AT enterpoint DOT co DOT uk. Either myself or one of my team can answer questions there. John Adair Enterpoint Ltd. On 20 Aug, 02:04, "Sink0" <sink00@n_o_s_p_a_m.n_o_s_p_a_m.gmail.com> wrote: > >Price modification for duty and taxation is something we can't do for > >obvious reasons. We have met the issue of very high taxes in Brazil > >before and it's a very big barrier to get getting modern technology > >into your country. One thing you didn't say was if this for a > >commercial or academic project. We do have academic discounts for > >students and universities that pass validation criteria. > > >On programming cables our USB Prog3 cable is an option with this > >board. It operates seemlessly with Xilinx software tools and doesn't > >need any other software or drivers other than come with Xilinx > >software. It's a similar price to the Chinese option. > > Its for Academic Purposes on Universidade de S=E3o Paulo here in Brazil. = Can > you give me your e-mail for further questions? I just found out that i wo= nt > have the Quickswiths ICs on my hand fast enough becouse i am going to Spa= in > at September 19 but would be very good to have the board on my hands 2 > weeks before i go and it takes 3 weeks to arrive. =A0 > > Thank you! =A0 =A0 =A0 =A0 > > --------------------------------------- =A0 =A0 =A0 =A0 > Posted throughhttp://www.FPGARelated.com
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