Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 3
zeeglen
User Rank
Blogger
re: Out of billions, one bit in error
zeeglen   8/25/2010 9:28:42 PM
NO RATINGS
Good catch. How well(er) I remember similar soldering irons with the transformer in the light blue stand. Every time we ran bit error tests on T1 6000 foot lines all soldering irons in the vicinity had to be turned off. One of those irons did turn out to be very useful in a test fixture I built to generate electrical power line transients. This was nothing more than a chattering relay (it's contacts in series with it's coil) to switch the AC line on and off to the soldering iron. Any time this could be shown to cause bit errors in a system under test we knew the shielding and/or power line isolation needed work. It also served to prove to management that bit errors are indeed caused by power line transients getting into the twisted pair and not necessarily through equipment faults, so they did not demand 100% error free tests.

old account Frank Eory
User Rank
Rookie
re: Out of billions, one bit in error
old account Frank Eory   8/25/2010 8:42:12 PM
NO RATINGS
Great story Glenn. This takes me back to the early days of my career when I was testing satellite modems. Those last couple of data points on the BER vs. Eb/No curve took forever to get. We never had issues with EMI from the soldering irons, but we did run into some interesting environmental influences that were only measurable down at the 10^-11 BER level...

<<   <   Page 3 / 3


Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
3 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
19 comments
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
39 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
144 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)