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Thanks Very Nice presentation

Iron

Thank you Fanny, very complex test setups.

Nice presentation.

Iron

Thank you for keeping this class up

Iron

Ihanks for having this lesson and archiving it.

Iron

Used test instruments not a master

Iron

I have been a tester and used these fixtures.  It was good to get a wider view of the available hardware, Thanks

Iron

Yes, involvement in product test

Electronics Engineer

R&D, MFG

I have no role in production test.

Iron

I have no role in production test, but I have helped to troubleshoot production test setups.

Iron

no production test involvement

Iron

Thank you Fanny. Good lesson.

Iron

@Ann - re. test paralellization... yes in QA testing (can't comment re. production testing)

Iron

@Ann - no role in production test

Iron

@Ann - not involved in manufacturing or production testing

Iron

Great to have access to the recorded sessions!

Iron

Missed the live lecture due to travel...

Iron

sometime we can parrallelize

no role in production testing

No I'm not involved in any testing of wireless

Looking forward to more quality wireless info (pun here folks)

Picking up a last class in the series

Good presentation, thank you

Iron

Well, better late than never

Iron

@luizcosta, if I'm understanding right, if you just plugged a USB cable through the test enclosure to connect the DUT, the USB cable would act as an antenna, reacting to signals outside the test chamber and altering the test results.  The "USB feed-through filter" on that slide is just a part of the test enclosure that gets rid of this external noise and provides a cleaner test environment.

Iron

@LevitonDave: Thanks for the feedback. I thought I understod the "bad-of-nails" metaphor. The USB, I am confused about its purpose in the RF link as shown in Session 3 slide 6. Why would one do that?

Iron

@luizcosta  - Bed-of-Nails is a connection technique used to probe a PC Board by using "pins" and pressing the board onto these pins. The term is due to the pins looking like the old torture device by teh same name.

USB - Universal Serial Bus - the same port that is on your computer used for memory sticks (thumb drives)

Hope this helps

@FANNY: Just to confirm my understanding of two terms this week: bed-of-nails and USB.

Iron

yes - i believe the entire broadcast is recorded and accessible in the archives.  you will also be able to download the slides.

Blogger

@Fanny: If I understood correctly, audio file that JI referred to was just the audio, not the whole broadcast. When I go to the archive, I get the whole broadcast repeated. Did I miss something?

Iron

audio file will be in the archives.  Anne, do you happen to know how soon after the show it's available?

Blogger

@jl What do you mean by "directly contacting you"? Perhaps you could share with us how to down load just the audio file.

Iron

Thanks Fanny - See you tomorrow.

Systems Integration test engineer for Industrial Controls.

Involved in both production test and QA,

Use Software defined Test Instruments, GPIB Controller and PLC.

Single DUT at a time during final test except during production we can test several units for temperature in a chamber

 

Iron

@bigchin - the audio for the presentations can be listened to again from the "archives" link in the menu above. contact me directly if you want to download your own copy of the audio file to learn how I have dowlnloaded them

Iron
IRON
 Just go to the "archive" in a little bit. access it from the calendar page itself.
Iron

you can access the recorded sound on the website after we are done.

Blogger

for 315 MHz we would be in the near field, but may be in the stable field.  We would need to use thicker absorptive foam, on the order of 4", but we can make things work

Blogger

Hello,

Is it some ways that I can get a copy of the presentation with sound?  I loss it in half way.

Regards, Chin

Iron

in some cases there exist precalibrated golden units, for example there are certified measurement antennas with guarangeed signal shape and power, but these are very expensive and may be unnecessary in production if proper calibration exists,

Blogger

Thanks for an informative presentation.

Iron

any phase compensations in respect of antennae, cinnections and attenuators?

Iron

the golden unit starts out to be a regular 'non-golden' unit and then becomes a golden unit in the process of calibration

Blogger

Thanks so much for the info.  very helpful as always.  I'll continue to refer my friends.

Platinum

Fanny - how low in frequency does teh OctoBox go? we have test requrements at the 315 MHz range and suspect that those frequencies might be difficult to address in a "portable" absorbed solution.

phase may be important when testing MIMO devices.  but there may be a way to isolate and test each of the MIMO radios by itself, which would be more reliable.  phase may be difficult to get right, particularly at 6 GHz.

Blogger

@fanny thanks! are there non-golden unit models that are commonly used or does it always come down to that?

 

Iron

typically steel works well. you need good high frequency plating for seals and gasketing in the right places.  right angle seals help prevent leakage.  does this help?

 

Blogger

@FANNY: Is there any need for phase insertion compensation due to the attenuators, connections, antennas, etc?

Iron

@octoScope - not that interested in the octoBox, just wanted a little more explanation

Iron

Thank you for today's session

Iron

the golden unit is indeed tricky.  the tricky part is characterizing it on its own in open air.  And this woudl require a discussion with specific examples.

Blogger

Thanks Fran, Digikey and all, for the program!

Iron

thanks to Ann and DigiKey for the great job in providing the forum for these presentations

Iron

Thank you Fanny and Ann, a great session today. No time to linger, so see all tomorrow, Friday 13th.

Iron

please contact me directly regarding the octoBox at fm@octoscope.com

 

Blogger

thank you Fanny, great presentation

Iron

Thanks for today's session, Max

Iron

thanks Fanny - another great presentation

Iron

Thank you, look forward to tomorrow.

Iron

@Fanny How do you make/create a golden unit - this seems like the hard part. And once you made one, and decided it's "gold" how to you ever make another that is identical?...

 

Iron

Thank you Fanny, Ann and Digikey for these excellent presentation.

Iron

Good presentation Fanny! See you tomorrow.

Iron

Hello Fanny - (reposted) looking at today's slides, and looking more closely at your octoBox. Is this made from basic material (metals?) or are there proprietary electronic or some other structure that isolates one chamber from the other. Just a breif explanation would be helpful to more fully understand the material you are presenting. Thanks 

Iron

Thanks for a lecture!

Iron

No I have not had the chance to use parallelism

Iron

Very great stuff!!   Thank you, everyone!

1) NO; 2)N/A; 3) Use Test Instruments for Productions Testing.; 4) High yield. 5) We do Multi site testing 2-4 device at the same time.

Iron

Thanks for today's session, Fanny.

Iron

@Ann - not involved in testing, so parrallel testing NA

Iron

yes, multiple test fixtures for parallel production testing/rework.

Iron

Please let us know 5) do you employ test parallelism to speed up your production test?

Blogger

Ann,

Do you know how to get the sound back?

Iron

4) room for improvement, but we are in a glacial industry

1) No

2) N/A

3) test setup

4) High yields

Iron

If you haven't told us yet, please let us know 1) Are you involved with production test?  If yes, what radio technology and applications are you working with?, 2) what is your role in production test?, 3) in your production test setup are you using test instruments or a golden master device?, 4) do you have high production yields or is there room for improvement?

Blogger

A reminder, if you've got additional questions for Fanny, she will answer them here in the second part of the show. 

Blogger

Yes, involved in field testing at the BTs

Iron

No, I'm not involved in Production Test

Iron

@ANN: Are you getting any of our questions? If you are and you don't think they should not be addressed now: I understand you want our feedback, but don't you think that a two way participation will be more active learning?

Iron

This is N/A for my last position, we make 1 at a time.

Iron

Hi Ann, not involve..

Iron

still room for improvements

Iron

high, but significant lot to lot variation

Iron

I'm not involved in Production Test. Just R & D.

Iron

high production yields, close coupling between production and engineering to fix a problem before it gets too big or escapes to the customer.

Iron

not involved in that testing

Iron

Always room for improvement!

Iron

Hi, but still room for improvements

Iron

Please let us know 4) do you have high production yields or is there room for improvement?

Blogger

OK, so the gradient absorption doesn't present an abrupt impedance change, minimizes reflection amplitude.

Iron

@ANN: a question for Fanny. Is there any need for phase insertion compensation due to the attenuators, connections, antennas, etc?

Not involved in production test.

Iron

I'm not sure when to ask this - but I really would like to understand how you make/create a golden unit - this seems like the hard part. And once you made one, and decided it's "gold" how to you ever make another that is identical?...

 

Iron

I'm not involved in produciton test

Iron

If you haven't told us yet, please let us know 1) Are you involved with production test?  If yes, what radio technology and applications are you working with?, 2) what is your role in production test?, 3) in your production test setup are you using test instruments or a golden master device?

Blogger

You can access archives of the previous days' lectures on this page:

http://www.designnews.com/lecture-calendar.asp

Blogger

For applications the have RF connection that go to an external antenna, could the master and the DUT be connected through a cabled connection with an characterized attenuator between them to remove variances in the antenna to air interface?

 

Iron

1)Yes, none

2)Create test/support

3)both

Iron

@hany.a... or anyone interested in obtaining audio for these presentations, please contact me to find out how I have done it.

Iron

Ahmed

Are you in Alexandria?

 

Iron

How do you accomodate degradation of the Golden DUT over time?

 

Iron

A tombstone cap is a SMT solder defect where the surface tension of the solder on one of the solder pads causes the part to pivot up off the other pad and stand up straight like a tombstone.  Happens more often with smaller parts.

Iron

@ANN: a question for Fanny. Is there any need for phase insertion compensation due to the attenuators, connections, antennas, etc?

Iron

Could I get the audio file for the previous lectures ?

 

@gschmick - tombstone cap? = a dead capacitor (broken)

Iron

I'm not involved in produciton test

Iron

Medical applications

Iron

Work for NXP Semiconductors

Iron

For those of you just joining us, please let us know the applications you're working on.

Blogger

What is a tombstone cap?

Iron

we use dedicated test instruments and fixture for production tests/calibration

Iron

Use Test Instruments.

Iron

Please let us know 3) in your production test setup are you using test instruments or a golden master device?

Blogger

Avionics communication equipment design

Iron

Is this Receive Sensitivity Test done conductivly or over the air at production?

Iron

Hello  all, Iam sorry to enter late

 

Iron

For those of you just joining us, please let us know your industry you're working in.

Blogger

RF Engineer.  Not working in production test.

Iron

For those who have commented about asking questions orally, please know that this is part of the format of the Digi-Key Continuing Education Center program.

Blogger

Provide ProductionTest Plan and guidance on Production Test Procedure and fixture design.

 

Iron

no role in testing

Iron

Design Equipment, Layout test facilities,install and commission, calibration and provide ongoing technical support to test technicians.

Iron

hardware. medical equipment.

Iron

@Ann - even though I am not currently involved in production testing, am very interested in the process and techniques generally  used in the industry

Iron

sr engr. electronics

Iron

No role in testing yet...

Iron

Hardware designer and test engineer

Iron

SW and HW..moving towards SW.

Iron

HW Design engineer; not in wireless production test at this time

 

Iron

role in production is design and updating test procedures for QA and functional tests.

Iron

@Ann: provide troubleshooting support during production test. Would you consider simply typing your questions into the Live Chat instead of interrupting the audio?

Iron

sometimes involved in production

Iron

@Ann - not involved in productino tests at this time

Iron

Role in production testing - complete involvement from test development to final documentation sign-off

not currently in production test

Iron

test process design and review of data

Iron

Not involved in production test

Iron

Project Mng(also Prof.)/Embedded System Design

Iron

Hardware design engineer..  Advisory support for production

 

 

Please let us know: 2) What is your role in production test?

 

Blogger

No role in production test

Iron

Embedded Systems Engineer.  Sometimes involved in production testing.

Iron

SEnsor networks solution developer

Iron

@Ann: software designer

Iron

Hi Ann, Fanny, and all.

Iron

For those of you just joining us, please let us know your job title.

Blogger

Currently not involved.

Iron

No, I am not involved whith it.

Iron

Production tests are done on RF tecnology, Guided Wave RADAR, but not intentionally wireless.

Iron

Yes, WiMax and LTE currentlyl

Iron

Please let us know 1) Are you involved with production test?  If yes, what radio technology and applications are you working with?

Blogger

Test Engineer, I am not involved

Iron

Hello everybody\

Goombi in ohio

Iron

Have been involved in GSM and AMPS testing in the past.

 

Gold

occasional production test support

Iron

not involved in production test

Iron

yes, have designed and implemented production test procedures. no wireless applications.

Iron

Yes, production test

No wireless applications at this time.

Iron

I am not involved right now.

Iron

I am not involved with production test

Iron

No Production tests at present.

not currently involved with production test.

not currently involved in production test

Iron

@Ann - not involved in production tests at this time

Iron

Not involved in production testing.

Iron

Hi - Sr. Sw Embedded Engineer - Lighting controls - wireless wlighting contol devices

I am and engineering team lead looking at a large scale install.

 

Iron

Good afternoon Fanny.

Iron

@GBoos, try browser refresh to fix.

Iron

If audio is stuck in a loop, refresh the page.

radio streamer seemed to go into a loop at beginning 2 sec. refreshed web page and everything OK now.

Iron

If you refresh, the loop will stop.

Iron

The audio is in an endless loop

 

Iron

HW/SW/FW & knowledge junkie.  :)

Greetings from NW Minnesota.

Iron

Snr Supervisor

ESP Systems manufacturer (Water, Oil & Gas)

Test Systems for motors, seals and pumps that are deployed in multiple domestic and international locations.

Iron

Telecom Systems Engn

Iron

@drw36, the play bar should come up at the top of the hour.

Iron

@drw36 - audio will not begin until precisely 2:00 pm EST

Iron

@jl, thanks, may be a local problem with the cloud.

Iron

Greetings from MN! QE-Electrical. Consumer electronics.

Iron

Good afternoon everyone.

 

Iron

Download ok. But I see no audio play bar this morning. Refreshed several times.

Iron

Hello from wet germany

Iron

A reminder, if you've got additional questions for Fanny, she will answer them in the second part of the show on the comments page. 

 

Blogger

@Danlafleur - just downloaded todays PPT with no problem in less than 5 secs

Iron

Does anyone else have trouble downloading the PPT? my download speed for the file is 3.5KB/s right now!

Iron

Telecom, Sr DSP engineer, wireless & voip

Iron

Hello Fanny - looking at today's slides, and looking more closely at your octoBox. Is this made from basic material (metals?) or are there proprietary electronic or some other structure that isolates one chamber from the other. Just a breif explanation would be helpful to more fully understand the material you are presenting. Thanks 

Iron

Associate RF Engineer/ATP Field Technician,     CDMA/LTE-4G

Iron

Hello from MA.

Sr. Embedded Systems Designer. HW and SW. Industrial controls.

Iron

Good afternoon from TX

Iron

Electronic engineering consultant, microcontrollers

Gold

Good morning from CA

Iron

Hello Ann...looking forward to another great presentation sponsored by DigiKey!

Iron

Looking forward to today's presentation

Iron

Sustaining Engineering Project Leader, the company designs and manufactures Guided Wave RADAR liquid level gauges for the tank truck industry. Wireless applications are Bluetooth now, future may be WiFi.

Iron

Hi all from California.

Lab and Automation Manager

Iron

Software test engineer, battery chargers

Iron

Howdy folks!!!  :)  

electronic profession engineer, general interest

Ann, your audio is rather quiet during the presentations, compared to Fanny's.

Iron

Please let us know your job title, your industry, and the applications you're working on. 

Blogger

Please join our Digi-Key Continuing Education Center LinkedIn Group at http://linkd.in/yoNGeY

Blogger

The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.

Blogger

Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session.

Blogger


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