Brent & Jim:
I am surprised that some compliance engineer from a TV or monitor company hasn’t stepped up, even if privately, to offer a purchase suggestion for a robustly quiet and immune test aid. Long ago, I had a contract testing big console Sony TV’s, and I sure knew that there were a few models that were more desirable (from a lab aid point of view) than other models. Somewhere around 2005, the CRT monitor which I used with the PC controlling my HP EMI data acquisition system suffered an expected fatal electrical injury. When I replaced it with a Viewsonic LCD monitor, I was pleasantly surprised to find that it did not increase the system noise level anywhere, and it also eliminated the 15.75 kHz harmonic train associated with the old monitor’s horizontal deflection frequency. BTW, I currently have two Toshiba 24SL410U combination TV/Monitors (one at my desk and another in my ham shack). Both have never shown any undesirable interactions with Wi-Fi, Bluetooth, cordless phones [yes, I still have one of those], iPhones or ham receivers (FWIW, anecdotal, no actual measurements ever made.) Ed Price WB6WSN Chula Vista, CA USA From: Brent DeWitt [mailto:[email protected]] Sent: Tuesday, January 10, 2017 1:11 PM To: [email protected] Subject: Re: [PSES] lowest emissions 4k TV? I should have mentioned that, in this case, we (Bose Corp.) are the test lab and it's our equipment we're testing. We just came out with a couple of new audio-for-video devices that route HDMI through to pick out the 5.1 surround. Had a heck of a time finding good sources and sinks. Not sure there are very many test reports to be looked at since TVs are verification only device. I suppose that more might be found if they incorporate non-modular Wi-Fi or RF remotes.. Brent -----Original Message----- From: Jim Bacher Sent: Jan 10, 2017 8:15 AM To: [email protected] Subject: Re: [PSES] lowest emissions 4k TV? It is ok to post recommendations on devices that are good for testing to this list. As the list is archived one can always search the archives for such things. I have used several approaches to finding good support devices. I have like others looked at FCC test reports. For the most part it was after getting recommendations to make sure it was a good choice. I look to make sure it was tested properly and had 6 dB of margin. That allows for production variations. I have on rare occasions looked for good support devices on the FCC website. I have also contacted compliance engineers at the company of interest to see what they recommend. In one case they told me not to use theirs. Not everyone supplies all support devices needed for testing. So the test labs do have support devices. Therefore you can ask your test lab as well, as they might have favorite support devices. Jim - ---------------------------------------------------------------- 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]>
