Re: [PSES] FCC - Frequency Range of Investigation for Intentional Radiator

Larry, Please find FCC's response, dated July 22, 2010, for your information: ** *Office of Engineering and Technology* *Inquiry:* For a class B digital device, with clocks/oscillators below 108 MHz, that incorporates an FCC certified 2.4GHz spread spectrum transmitter module, how high

[PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

Dear Members, Can an IEC 60950-1 power adapter be used with an IEC 60065 device? Two of my collleagues told me yes. However, they couldn't find any regulatory document to support the comment. We have an IEC 60065 device under CB evaluation. The power adapter's CB certificate is under IEC

[PSES] 461 CE102 Attenuator Value

Ken: Why did the committee settle on the value of 20 dB for the CE102 attenuator? I know that transient current changes in the LISN load can cause energy to be coupled into the analyzer, possibly damaging the analyzer input, so some protection is a good idea. And, if you do have a high

Re: [PSES] Color of Mains Wiring (DC supply)

Short and sweet: No. There are some conventions people adopted over the years which may be confusing: where in AC/DC feed, the DC side is Red for (+) and Black for (-), in some -48 V systems I've seen the reverse. What is important is the correct polarity marking such as -48 (-) and Return (+).

Re: [PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

This may shed some light on your question. http://data.ul.com/pagos/PAG60950.asp?Num=1.1Bullet=1 ___ Kenneth Wyatt Wyatt Technical Services LLC Woodland Park, CO Email Me! | Web Site | Blog Subscribe to Newsletter Connect with me on LinkedIn On Apr 12, 2012, at 5:51 AM, Grace

Re: [PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

Right smack in the middle of this myself. The answer received so far is it's one directional. UL will accept a 60950 power supply with 60065 equipment, but they cannot have a full CB report written because EU or parts of it (as explained to me) won't allow it. Most maddening is that our

Re: [PSES] 461 CE102 Attenuator Value

Ed, I don¹t recall why the specific value of 20 dB was selected, but you have hit on all the reasons a pad is necessary. The first reason is the issue of protecting the EMI receiver/analyzer, and I suspect the largest pad was chosen for that job that would maintain the required sensitivity. As

[PSES] US MIL-STD

Hi group, I use to have access to US MIL-STD trough ASSISTS-ONLINE at http://assist.daps.dla.mil/ http://assist.daps.dla.mil/ but this link seems to be out of service or not accessible any more, does anyone know where MIL-STD can be downloaded from? Best regards Helge Knudsen

Re: [PSES] US MIL-STD

Apparently, they upgraded their links without telling you! The thought of it! :-) The Assist site has updated the links. Please update your bookmarks and favorites to reflect the new links: Home https://assist.daps.dla.mil/online/start/ Quick Search https://assist.daps.dla.mil/quicksearch/

Re: [PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

Hi Grace: Since the lab has requested a 60065 CB, I would seek a second CB, for IEC 60065, rather than argue with the lab. The physical construction of a power adapter meets both standards. The terminology differs, and the CB differs. This should be a paperwork endeavor with no

Re: [PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

Thank you so much, Richard. You pointed out a good approach. On Thu, Apr 12, 2012 at 2:33 PM, Richard Nute ri...@ieee.org wrote: ** Hi Grace: Since the lab has requested a 60065 CB, I would seek a second CB, for IEC 60065, rather than argue with the lab. The physical construction of a

Re: [PSES] FCC - Frequency Range of Investigation for Intentional Radiator

Hello Grace - That's correct of the module is certified. However the original post only indicated a wireless device. So, assuming that it's NOT a module then the frequency range of testing is from the LOWEST frequency used in the system to the 10th harmonic of the transmitter. Best Regards

[PSES] HAR cable -v- BS 75671

Hi. The UK are cosigners to the HAR agreement. However, BS 7671 calls out a number of BS standards for cables, but does not mention HAR cable. Can HAR cables be used in the UK and meet BS 7671? What sort of limitations are there? Regards, Peter L. Tarver This email message is for the sole

Re: [PSES] HAR cable -v- BS 7671

Make that BS 7671 -Original Message- From: Peter Tarver Sent: Thursday, April 12, 2012 15:00 Hi. The UK are cosigners to the HAR agreement. However, BS 7671 calls out a number of BS standards for cables, but does not mention HAR cable. Can HAR cables be used in the UK and meet

Re: [PSES] AC Power Adapter, IEC 60065 vs IEC 60950-1

I supposed different agency has difference preference. They have no reason to reject your IEC60950 CB report of the power adaptor unless the power adaptor can't pass the different testing according to IEC60065. Regards Tim From: Grace Lin [mailto:graceli...@gmail.com] Sent: Thursday, April 12,

Re: [PSES] 461 CE102 Attenuator Value

Ken: Whenever I wrote an EMCTP, I typically included a 10 dB pad for CE102, especially if I felt (yes, a very subjective guess) that the system would be relatively quiet. And when I actually got into a test, if the system was extraordinarily quiet, I would suggest going to a 3 dB pad.