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Thank you Fanny; very informative session

Rookie

Thanks for this course. It has been informative.

Rookie

Thank you very much.

Rookie

May I have one more question: one slide 20 of Jan 17 section, it says that BIFA antenna performance is very good. I wanted to try it on our products, but I don't know how to match it to differentical input of the RF IC. Do you have any paper(s) recommended for me to read? Thank you!

Rookie

very informative sections. I feel that I want to anttend EE times university now.

Rookie

Thank you Fanny for informative lecture, thank you Alex for directing

Rookie

yes - very important to correlate lab to field test results

Blogger

Interesting fact is to see any deviations from lab testing and open field. And correct them accordingly.

Rookie

you can typically catch 70-80% of issues in the lab and then you need to go into the real-life environment to catch the rest... or your customers will catch them in the end :)

Blogger

however, you can create controlled dynamic conditions, such as noise, multipath and emulated motion in the lab

Blogger

Field test is required, of course

Blogger

Lab testing does have its limitations

Blogger

comment: Lab testing is prone to stay in the static state vs dynamic state of field environment.

Rookie

Public safety LTE handsets require mission-critical voice service, and commercial LTE currently does not support voice, so this leaves some work for the industry to do.

Blogger

octoScope has done work iwth LMR radio technology and we completed a project iwht DHS on public safety LTE deployment.

Blogger

at octoScoe we developed a line of magnetic filters that support gig Ethernet PoE, USB and other copper transmissionl lines

Blogger

Slide 15 shows a wireless mesh of LMR (public safety) radios... do you (octoScope) antipcipate developing test equipment/software for LTE/LMR coexistence? the octoScope brochure calls it the DHS SBIR project

Rookie

for conducted testing, the filters are the same as for OTA, but for conducted tests isolation is not as critical since we take antennas off.

Blogger

Yes, getting a lab test setup that duplicates the wierd scenarios you find in the field is one of the big challenges of testing.

Rookie

I'm an EE and used to work in radio, and I'm still amazed that all my wireless devices work like they do. But after learning about modern test setups in today's presentaton, I only attribute 50% of it to magic. It used to be 90%.

Rookie

Thank you Fanny and Alex, I've enjoyed the topic and it has given me a nice introduction of things to look for.

Rookie

Q: page 9  What type of filters are applicable for conducted test? Can you give us an example (parameters of filter)? Thanks.

Rookie

Testing in the lab is obviously easier than in the field and creating a good teswtbed that exercises outdoor conditions well is of great value

Blogger

For what Fanny had listed for Deployment, we actually used to run as a validation step in R&D.

Rookie

the best case ifs when you can capture an dbring in outdoor real life environment into the lab

Blogger

R&D testing involves both Laboratory and field testing

Blogger

this is fine, but it's difficutl to get gigabit Ethernet and PoE this way

Blogger

yes - for feedthrough Ethernet filters, some manufacturers use electro-optical converters and guide a fiber optic cable through a waveguide in the wall of the chamber

Blogger

So BT is not normally effected by say noisy power lines and such?

Rookie

Q: page 16   Does R&D considering to run some experiments / tests at the field to capture any environment issues? Or R&D is doing only a lab testing?

Rookie

Excellent job!

Thank you.

Rookie

Bluetooth is susceptible to Wi-Fi interference because the networks are in the same band and because BT signal is much lower in power than Wi-Fi

Blogger

Thanks! Although I did not listen to all courses live, but I did get to all of them and learned a lot!

Rookie

I think I got the most out of this presentation compared to the others.  Maybe because it covered the biggest gaps in my knowlege of wireless design.

Rookie

controlled environment testing is evolving quickly and it's difficult to find high quality setups. That's one of the reasons octoScope entered the business of controlled environment testbeds.

Blogger

Question:  Is Bluetooth very suceptible to interference ? Is there a particular form of interference that is more troublesome? RF radiated sources, Electronic switching ? 

Rookie

Great informative sessions.  Thanks.

Rookie

Thank you so much! Great series.

 

 

Indeed. Much thanks, Fanny, for taking the time to share your knowledge with us. Thanks to EET, R&S, and Alex for helping it happen.

Rookie

Thanks for a great week.

Rookie

Thank you very much. The course contained many important technical foundations.

Thank You Fanny for the excelent presentation!

Thank you to Alex!

Thank you to EE Times University

Rookie

Thank you Fanny and Alex, great and useful information.

Rookie

Sure I've already looked at OctoScope site - very informative and interesting :)

Rookie

thanks much folks !

 

Rookie

Are most or all of the  test components and devices for the controlled environment testing readily available commercially? or do they need to be designed in-house, if so, which ones?

Rookie

Thank you, Fanny and Alex.

 

Rookie

Great Course! Thank you!

Rookie

Excellent presentation, Thx

Rookie

Can volume be truned up difficult to hear

 

Rookie

Thanks Fanny, great presentation.

Rookie

Thanks Fanny and Alex

Rookie

Thanks again for another great presentation

Rookie

Thanks for a brilliant series.

Rookie

Fanny Thank you for another GREAT presentation. 

Rookie

optical for Ethernet on both sides of a shield/screen room wall is fairly common/popular, but strictly data/control, no PoE which is the norm for an AP

Rookie

Check out the website for Ramesy: they have the most popular, reasonably priced shield boxes, and have lots of feed-thru connector/filter options...

Rookie

Analog RF Design Engineer

Rookie

What type of filters are applicable for conducted test (page 9)? Can you give us an example (parameters of filter)?

Rookie

Distributed Antenna Systems (DAS) widespread  for cellular in hospitals, which is primary location for Vocera VoWLAN deployments, and huge co-ex issue!

Rookie

Is optical ( + batteries inside ) used much for feed thru filters?

Rookie

Can you be specific about the type of filters?

Rookie

That was just and EXCELLENT introduction to feed through filters !!!

Rookie

If the actual world is not a controlled enviornment, is there any Basband algorithms that compensate for Antenna performance creating nulls or poor performance in any direction ?

Rookie

Please enter questions for Fanny

Rookie

EE - R&D - Developing proprietary wireless systems for mining applications

Rookie

medical devices in the past, no current project at this time except dev kit evaluations

Rookie

Embedded systems architect/engineer esp focusing on wireless

Rookie

Embedeed Applications R&D engineer, hardware and software. Working on wireless devices for diverse applications.

 

Rookie

Patent law. General interest in LTE/4G

 

Rookie

Electronics/Software/EMC Engineer

Design and manufacture wayside reporting equipment for railroad applications.

Rookie

Telecommunications Consulting Engineer

Rookie

EE doing hard ware and software design for RF, video monitors, switchers and test equipment

Rookie

R&D Renewable Energy monitoring

Rookie

ECE engineer

Project Leader - developing car management system

Rookie

EE Embedded design

Rookie

North Pole, not the North Pole

look it up in your research engineering

(search engine) ok

Rookie

Military ESM system project

Rookie

i am recent graduate and interest in embedded s/w and h/w 

Sr. Program Manager at Microsoft Windows Phone. Interested in Connectivity Solutions.

Rookie

Product Development Leadership electro-mechanical products

Rookie

Sell Connectivity solutions

 

Rookie

R&D Medical devices

 

Rookie

embedded software, drivers

Rookie

Hardware EE R&D, Test, embedded devices

Rookie

Hi from San Diego, CA!  Retired mechanical designer and currently a tinkerer

 

Rookie

Hello,

Benchmark Test Engineer

Rookie

Engineering Services

Silicon Valley, CA

Rookie

Military Systems - System Test

Rookie

Tektronix applications engineer

Rookie

hardware engineer from sydney

 

Rookie

Good day for Ottawa Canada

 

Rookie

Good morning: Isidro from CA

M2M Applications both H/w & S/W

Rookie

Here we go again!  Audio is up!!

Rookie

Hardware/Systems Eng. from NJ working for Space/Aerospace defense contractor

Rookie

Hi again from Munich. And before Alex asks. My discipline is EE and I work as a technical translator for Rohde & Schwarz (great company)!

Rookie

Good Morning everyone!

Rookie

Good morning, glad its atleast 49 here in CA

Rookie

Greetings from upstate New York! - light snow and 18 deg. F

 

Rookie

hello from sydney again

Rookie

Hey, Alaska IS big, but it doesn't extend to the North Pole!  Ya ain't kidding me!

Rookie

hi fanny gd afternoon..from uk

-25 Below, North Pole, Alaska, near Fairbanks

Rookie

Greetings from Boston (again).  Experiece: went through FCC testing for a non-intentional transmitter (circa 1999).  Equipment in-house: nada.  Cheers jb

Rookie

Hi, Hello from Oregon

Rookie
Good morning from San Jose, CA SW/HW R&D Engineer
Rookie

Good morning from Edmonton, AB.

Rookie

Good morning from Scottsdale

Rookie

Good Morning from GA. It's cold today.

Very informative week session

Rookie


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