thrilling movie

That was amazing, John. You should send it here:

:-|

Bob

On a sunny day (Thu, 07 Aug 2008 09:36:43 -0700) it happened John Larkin wrote in :

Honestly, I have not the slightest clue as to what this represents? Care to tell us ;-)

Wowee, pazowee!

What's it do ?:-)

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

On a sunny day (Thu, 07 Aug 2008 09:36:43 -0700) it happened John Larkin wrote in :

I have enhanced your movie a bit :-) ftp://panteltje.com/pub/T346_demo_enhanced.MPG

Where is the audio?

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs (among other things)

void _-void-_ in the obvious place

The first three are just demos of waveform triggering and modulation/arb capability. Here's the box:

The green trace simulates a group of variable-reluctance pickups on a shaft inside a jet engine. They put ring-gear looking things at various places on the shaft, with various numbers of teeth. The triplet pulse tells you the 0 degree angular reference and the basic speed. The moving pulses could be from another set of teeth on the other end of the shaft; their phase relationship to the triplet is shaft twist, torque. This waveform is simplified for cosmetics; real ones like the JSF fan shaft system can have a lot more features. For some reason, the mechanical and sensor people seem to like to encode a lot of information in a single electrical signal, and let the engine control computer figure it out. In my demo, the movable pulses are actually being phase modulated by a 0.5 Hz gaussian noise generator, another channel in the little box.

Channel 3 is my crude attempt at the company logo, made out of line segments.

We want to do an add in an aviation magazine: this box spewing out four waveforms, looking sort of like an airplane taking off. The green trace is a known eye-catcher to a certain group of aircraft engineers. I need three other "iconic" waveforms. Maybe a chirp for the radar guys? Maybe something that looks like an impact event picked up by an accelerometer?

We tried a Golden Gate Bridge waveform, but it didn't look very good.

John

On a sunny day (Thu, 07 Aug 2008 12:01:58 -0700) it happened John Larkin wrote in :

One detail, the screws on the front and back are not flush with the surface, perhaps nuts, chrome, closed, would look better? _ /___\\ | | ==========================

eh. maybe not...

I have build several things in housings like that. And I hope it has no-slip feet.

......................................................

I always thought an animation showing the operation of a FIFO would be a neat thing to do.

Tam

That's massively unexciting, I expected all the traces to dance :-(

Dave.

!!Thank you!! for disclosing the size in advance. Will pass because it is on the large size for dial-up.

...

Nah. Just make the countersinks deeper, or use undercut flat head screws.

Cheers! Rich

On a sunny day (Fri, 08 Aug 2008 17:11:57 GMT) it happened Rich Grise wrote in :

In that case, make the labels cover the screws, that makes an anti- open system, if label damaged, guarantee void.

The problem with labels like that is that, placed on a corner of a small electronics item, they're very likely to be damaged just in the general rough-and-tumble of being used/moved/etc.

In general I think such sticks are poor form anyway -- it's usually obvious if a failure is caused by someone taking a device apart and messing with it, and the number of failures left that (1) aren't obvious in such a manner and (2) the individual is willing to lie about whether or not they opened it up is so small that I don't think it's worth bothering with.

Would you buy a car where the hood had a "warranty void if opened" sticker on it?

On a sunny day (Fri, 8 Aug 2008 12:03:41 -0700) it happened "Joel Koltner" wrote in :

Some space needs to be left, I think there is enough in this case.

If you look at it as just a signal... Anyways, I have plenty of electronics around with stuff like that,

Cars require the hood to be opened for all sorts of maintenance, oil, sparkplugs, air filter etc..

Having the labels cover the screws also looks a bit nicer though :-)

But you are right, if this is just a technician's tool, then perhaps it is better to leave it the way it is, those guys will want to peak inside anyways, if it is nicely constructed then that can help sales, can work against you too...

Only dealers and other authorized service centers should be performing maintenance, and they'll have the appropriate replacement labels.

:-)

The next thing you're going to tell me is that you expect you should be able to take a DVD and be able to transfer its contents to a portable media player without breaking any laws, you know?

:-)

But that would ruin the label every time we open it up, which would be a nuisance.

There's nothing wrong with the screws. They make a statement: this thing is held together with screws.

better

too...

It's not too ugly inside.

ftp://66.117.156.8/DSC01786.JPG

I sort of like the little heastsinks on the DACs. Too bad they don't come in anodized colors.

John

On a sunny day (Fri, 08 Aug 2008 15:22:10 -0700) it happened John Larkin wrote in :

better

too...

That large DIL IC socket? or maybe for a second board? Those sockets are bad, I exclusively use 'turned' ones. Already I see pins bended in yours. I mean like those:

For the rest it looks very nice John!

better

too...

Eprom. It holds the firmware and the FPGA config.

They always work.

Which ones? They all look OK to me.

We use them sometimes, but they're not really beneficial here. One of these sockets will typically be used once, for the initial eprom. Rarely will that rom be changed.

Never had one fail in the field, so far.

John