Author Topic: eevBLAB #8 - New Tektronix AGO3000 Oscilloscope (Read 34958 times)

parbro · « **Reply #25 on:** March 31, 2015, 03:28:51 pm »

I am getting glitchy video playback on the eevBLAB videos including this one. The video becomes unsynchronized from the sound. The video has a strange jittery looped playback appearance. Seems to only be a problem in HD. Windows 7 64-bit, Firefox browser.

DanielS · « **Reply #26 on:** March 31, 2015, 03:31:07 pm »

Quote from: mux on March 31, 2015, 01:15:16 pm

If the frequency stability craze continues a company like Rigol might very well have enough production volume to warrant something custom (but fundamentally cheap) like that.

With the number of devices that require increasingly accurate and stable clocks for various reasons, such an inexpensive compensated and stable integrated clock would likely become an off-the-shelf part found just about everywhere that can afford the power to run it.

Quote from: Trey on March 31, 2015, 03:17:58 pm

For applications where the timebase is SO critical, why not just use an external frequency reference (e.g., disciplined rubidium, cesium)? It seems that one might well need precision on the source side and other instruments too.

You do not necessarily want to lug around your clock reference whenever and wherever you need a reasonably accurate measurement. The scope likely has a reference in/out in case you want to either use the lab's reference when one is available or use the scope as the reference for your other equipment otherwise, sparing you the trouble of lugging a reference around when the scope's internal clock is good enough.

Trey · « **Reply #27 on:** March 31, 2015, 03:59:29 pm »

Quote from: DanielS on March 31, 2015, 03:31:07 pm

Quote from: Trey on March 31, 2015, 03:17:58 pm
For applications where the timebase is SO critical, why not just use an external frequency reference (e.g., disciplined rubidium, cesium)? It seems that one might well need precision on the source side and other instruments too.
You do not necessarily want to lug around your clock reference whenever and wherever you need a reasonably accurate measurement. The scope likely has a reference in/out in case you want to either use the lab's reference when one is available or use the scope as the reference for your other equipment otherwise, sparing you the trouble of lugging a reference around when the scope's internal clock is good enough.

Agreed that reasonable accuracy is important and I'm glad to see a good TCXO. I suppose short-term repeatability is more the point of the gravity compensation since it is much finer than the inherent timebase accuracy anyway:

The (DRAFT) spec sheet indicates:

Time base accuracy: TCXO ±0.05ppm + aging factor (1st year: ±0.005 ppm, 2nd year: ±0.01 ppm, 5 years: ±0.03 ppm) over any ?1 ms interval over operational temperature range.

Gravity Compensation: ±0.01ppb maximum TCXO timebase change over +/-2.5g range and 0.31 GRMS (5-500 Hz) maximum vibration

Now HP ~~Agilent~~ Keysight just needs to build in compensation for relativistic effects. :-)

economist · « **Reply #28 on:** March 31, 2015, 04:32:44 pm »

I am most interested in the integration of instruments that we've seen in recent years. Scope, 12-digit counter, arb wave gen, SA, all in one box with a nice interface and big screen -- very neat. I can see how industrial use might not be satisfied with only such an integrated instrument, but for hobby / small shop use it's very appealing.

SeanB · « **Reply #29 on:** March 31, 2015, 05:02:12 pm »

I wonder if you make a 3 axis MEMS device, and then use it to generate the compensation coefficients for the TXCO if that would allow the oscillator to be more accurate, down to the 0.01PPB level, as opposed to the current Tek one of being compensated to 0.1 PPB, which is an order of magnitude better than the original unit.

Then you can compensate for it being used anywhere in the world, and it might even be possible to compensate it for use in space, as there you do need to compensate for Einsteinian effects on clocks, as they do run slower in orbit. If they need somebody to hold it in the ISS I am available, just not tomorrow as I am busy all day, full day already set out and then I might even be able to do my own work a little.

MarkL · « **Reply #30 on:** March 31, 2015, 05:43:17 pm »

Quote from: arjengerstel on March 31, 2015, 02:04:18 pm

Sorry Dave, this one is not for you. It works for the Northern Hemisphere only. Using this baby on the Southern Hemisphere will only result in a double error. Maybe next year Tek will issue a probe that compensates?

Tek has already issued a work around for this. You just have to turn the scope upside down.

It's a software bug. There's already an open case for it and they'll get it fixed "real soon".

ruffy91 · « **Reply #31 on:** March 31, 2015, 05:48:37 pm »

Dave already used this workaround for oscilloscopes that have been manufactured on the northern hemisphere.

M4trix · « **Reply #32 on:** March 31, 2015, 06:00:55 pm »

Well, I guess the AGO3104 model will cost around $14,000USD. I could buy a house for that money!

Smokey · « **Reply #33 on:** March 31, 2015, 07:05:23 pm »

The links on the Tek page don't work for the video or "Read More". Did they actually have content there and it's just slashdotted now?

rolycat · « **Reply #34 on:** March 31, 2015, 07:12:21 pm »

Quote from: Smokey on March 31, 2015, 07:05:23 pm

The links on the Tek page don't work for the video or "Read More". Did they actually have content there and it's just slashdotted now?

Not working yet, but don't forget it's an unreleased product. I'm sure the people at Tek are working just as hard on the marketing media as they are on the scope itself...

elgonzo · « **Reply #35 on:** March 31, 2015, 07:18:29 pm »

Quote from: M4trix on March 31, 2015, 06:00:55 pm

Well, I guess the AGO3104 model will cost around $14,000USD. I could buy a house for that money!

I heard on the US market it will cost $41,000USD.
Europeans should get a better deal at 14,000EUR, though
Rest of the world i don't know. Depends on their local customs in this day and age, i guess

dadler · « **Reply #36 on:** March 31, 2015, 07:40:17 pm »

Quote from: EEVblog on March 31, 2015, 10:22:18 am

Quote from: trevwhite on March 31, 2015, 10:18:31 am
What is the Agilent counter you use in the video?

53131A

Ahh, I thought it was an HP 40115A. Thanks.

tszaboo · « **Reply #37 on:** March 31, 2015, 07:44:35 pm »

Quote from: daqq on March 31, 2015, 11:23:20 am

The next stage is quite obvious: Relativistic effects compensated oscilloscope - you choose your frame of reference, enter your speed, the speed of the measured system, any additional gravitational fields in place and you're in!

AFAIK, Keysight is working on their GPS compensated Scope, which has all these things built in. I'm very disappointed that this was not addressed before, even a very low, 4.2 Km/s speed is enough to cause 1ppb error. It is supposed to be launched on the 31. of April, Ijon Tichy himself will be hosting the show when they launch.

T3sl4co1l · « **Reply #38 on:** March 31, 2015, 07:45:49 pm »

Such compensation is very important, especially in countries such as Australia where the gravity is negative and the electrons fall out.

elgonzo · « **Reply #39 on:** March 31, 2015, 07:46:48 pm »

Quote from: NANDBlog on March 31, 2015, 07:44:35 pm

AFAIK, Keysight is working on their GPS compensated Scope, which has all these things built in. I'm very disappointed that this was not addressed before, even a very low, 4.2 Km/s speed is enough to cause 1ppb error. It is supposed to be launched on the 31. of April, Ijon Tichy himself will be hosting the show when they launch.

I heard I. Tichy will present the new KeySigh scope on the next Futurological Congress - didn't know that it will already happen on the 31. of April...

tszaboo · « **Reply #40 on:** March 31, 2015, 07:52:49 pm »

Quote from: elgonzo on March 31, 2015, 07:46:48 pm

Quote from: NANDBlog on March 31, 2015, 07:44:35 pm
AFAIK, Keysight is working on their GPS compensated Scope, which has all these things built in. I'm very disappointed that this was not addressed before, even a very low, 4.2 Km/s speed is enough to cause 1ppb error. It is supposed to be launched on the 31. of April, Ijon Tichy himself will be hosting the show when they launch.
I heard I. Tichy will present the new KeySigh scope on the next Futurological Congress - didn't know that it will already happen on the 31. of April...

To be honest, I read books. Didn't watch the german TV show.
You edited the post this doesnt count.

elgonzo · « **Reply #41 on:** March 31, 2015, 07:54:53 pm »

Quote from: NANDBlog on March 31, 2015, 07:52:49 pm

To be honest, I read books. Didn't watch the german TV show.
You edited the post this doesnt count.

Yes, i edited my comment. Stanislaw Lem being such a well known writer, i found my original comment somewhat ...erm... dumb...

(Also read his books - he and P. K. Dick are being my favorite writers. Also have seen the German TV series, and i found it to be rather good and funny...) (EDIT: Just made a pointless edit just for the sake of editing my comment

)

eV1Te · « **Reply #42 on:** March 31, 2015, 08:14:40 pm »

Dave, please publish the outtakes from making this video, I noticed quite a few more cuts than usual

economist · « **Reply #43 on:** March 31, 2015, 08:15:06 pm »

Damn it, I wanted that 12 digit counter...

photon · « **Reply #44 on:** March 31, 2015, 08:35:09 pm »

I'm holding out for a scope that can have a conversation with me.

brabus · « **Reply #45 on:** March 31, 2015, 09:07:16 pm »

elgonzo · « **Reply #46 on:** March 31, 2015, 09:16:23 pm »

Quote from: photon on March 31, 2015, 08:35:09 pm

I'm holding out for a scope that can have a conversation with me.

To realize this to its fullest potential, you would need to equip the scope also with vision system and 2 to 4 manipulator arms to handle the probes.

"Scope, diagnose this circuit in front of you and search the internet for solutions for all the problems it has."

AndyC_772 · « **Reply #47 on:** March 31, 2015, 09:40:30 pm »

Diagnosis: PEBCAK error. The circuit is doing exactly what it should be doing under the circumstances.

Shame, really. I'm still waiting for an IDE that'll let me press CTRL-B to select all bugs, then <DEL> to remove them.

EEVblog · « **Reply #48 on:** March 31, 2015, 10:04:47 pm »

Quote from: eV1Te on March 31, 2015, 08:14:40 pm

Dave, please publish the outtakes from making this video, I noticed quite a few more cuts than usual

No outtakes, just the usual single take first time Blab video. Because I was editing in the overlay video, thought I'd take out some um's and ah's as well.

Dave Turner · « **Reply #49 on:** March 31, 2015, 10:26:22 pm »

How about an Anti-Gravity-Oscilloscope


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Author Topic: eevBLAB #8 - New Tektronix AGO3000 Oscilloscope (Read 34958 times)

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