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Measurement.Blues
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Re: Thanx!
Measurement.Blues   7/22/2014 11:21:50 PM
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Tough question. If you ssned me 4-6 answers with one being right and a link to a source, I'll post it in a future quiz <martin.rowe@ubm.com>. This week's quiz is already loaded into the system and will appear at 0500 GMT on Friday. .

DrFPGA
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Re: Thanx!
DrFPGA   7/22/2014 11:08:58 PM
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How about a question on the size of a reflection on a 1micron trace of 1cm length over a perfect insulator without termination. Driven by a perfect step function of 1V. What voltage level will the 3rd reflection be at the driven end? Extra credit- when will it happen...

David Ashton
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Re: Withhold the answers for a week?
David Ashton   7/22/2014 7:58:13 PM
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I'd go along with Antedeluvian, getting the answers on the last page is fine for this quiz.

Zeeglen a couple of weeks ago gave us a schematic to puzzle over and let us stew for a few days, during which there were lots of comments about what it might be - but this is a different kettle of fish.

Measurement.Blues
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Re: Withhold the answers for a week?
Measurement.Blues   7/22/2014 5:01:00 PM
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antedeluvian writes:

In this day and age of instant gratification, I think the format should stay just as it is.

Agreed. Answers will remain on the last page.

Measurement.Blues
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Re: Thanx!
Measurement.Blues   7/22/2014 4:59:14 PM
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@DrFPGA asks:

How about an extra credit question at the end that involves math...

I'm assembling this week's quiz. Be careful what you ask for.

Measurement.Blues
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Re: Withhold the answers for a week?
Measurement.Blues   7/21/2014 10:24:03 AM
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I've started adding links to my source material. I hope you find that helpful.

antedeluvian
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Re: Withhold the answers for a week?
antedeluvian   7/21/2014 10:08:36 AM
Martin

The problem with holding back is that you may forget your answers a a week later. Are you more likely to come back the next week to see the answers


By the next week I willl have forgotten all about the quiz. I think postponing the answers will reduce the number of comments.  

In this day and age of instant gratification, I think the format should stay just as it is.

 

MeasurementBlues
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Re: Relieved
MeasurementBlues   7/21/2014 10:04:42 AM
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Antedeluvian,

I'm also relieved that I got the questions right. Sometimes I run them by people to make sure that the wrong answers are really wrong. Some can be open to interpretation.

Of course, you are now qualified to submit your own quiz questions.

MeasurementBlues
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Withhold the answers for a week?
MeasurementBlues   7/21/2014 10:01:48 AM
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Would you prefer that I hold the answers for the following week or do you need the instant gratification from knowing your results right away?

The problem with holding back is that you may forget your answers a a week later. Are you more likely to come back the next week to see the answers?

antedeluvian
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Relieved
antedeluvian   7/21/2014 9:54:33 AM
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Martin

Questions are relatively easy to get. there are plenty of technical articles fromt eh old EE Times on the site and even more on EDN.

 I am relieved to see that I got 100% since I did write a series of articles on Temperature Measurement on Planet Analog (Part 5 is the link since you can get to the first 4 from there).

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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