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TDS-1002b Any good? Comments?

D

David L. Jones

Jan 1, 1970
0
I'll gladly pay shipping costs for a good one. :)

Heck, I'll happily pay express postage to Australia for one!!

Dave :)
 
D

David L. Jones

Jan 1, 1970
0
[...]
I pretty much read the whole user manual. It certainly has features that
I've wanted in the past. Just being able to see what happened before the
trigger will be a boon. I doubt I really "need" this scope, but I sure do
want it.

[...]

As a general comment, I'm genuinely puzzled at the large number of people
who need and seemingly make regular of, the pre trigger and pre storage
facilities of digital scopes.
Can't remember the last time I needed the facility.
Am I missing out here, or doing something wrong, or thick or summat, or
what?.
john

It's a simple matter of that if you have it available you'll find a
lot of uses for it you didn't know you had before. If you don't have
it available you make do and don't realise what you are missing.

Dave :)
 
A

Anthony Fremont

Jan 1, 1970
0
john said:
[...]
I pretty much read the whole user manual. It certainly has features
that I've wanted in the past. Just being able to see what happened
before the trigger will be a boon. I doubt I really "need" this
scope, but I sure do want it.
[...]

As a general comment, I'm genuinely puzzled at the large number of
people who need and seemingly make regular of, the pre trigger and
pre storage facilities of digital scopes.
Can't remember the last time I needed the facility.
Am I missing out here, or doing something wrong, or thick or summat,
or what?.

That really surprises me. In my meager experience I have wanted to know
what happened _before_ the trigger many times. I, for one, can't wait to
find out. ;-)
 
C

Charlie Edmondson

Jan 1, 1970
0
Joerg said:
Same here. Not that I need one right now but it would get a loving home.




Yes!
Put me in that list! I don't own a scope (I Know, how can I be an
engineer if I don't have an o-scope...) and could use one if it doesn't
cost much. Used is fine, I only need it to troubleshoot the occasional
board. For digital, I have a small USB signal analyzer...

Charlie
 
J

John F

Jan 1, 1970
0
Eeyore said:
2465s are fetching decent money on ebay.co.uk.

I'll help you get rid of one for sure !

"Me wants one too!" :)
 
M

Marra

Jan 1, 1970
0
Anybody got one? Do they suck? Will it last thru 10 years of off-and-on
hobby usage? Any horrible "features" that didn't make it to the marketing
brochures?

Since all my stuff is ancient and I'm tired of being publicaly embarassed
(;-) I've decided to seriously consider some upgrades. My old Hitachi
V650-F has been great, but it's sadly in need of a calibration and the
controls/switches are a bit flakey at times. After talking with some local
cal shops, I've decided that my $250 could be better spent somewhere else.

I called Tucker about a used HP they had on their site, but alas they were
all sold out. After yacking with Jerry for a couple of minutes he tossed
out the idea of a TDS-1002b. I've looked at the specs and man I feel like
I've been living under a rock. It looks like these things almost make
thinking a thing of the past. I've never even used a DSO before, so I'm a
bit shy about trying something new but they certainly look handy. Any
advice?

I would bite the bulet and buy a new one.
I bought 2 second hand ones from a dealer and they stopped working
very soon after I got them.
I would go for a modern new scope that fits what you are trying to do.

www.ckp-railways.talktalk.net/pcbcad21.htm
 
K

krw

Jan 1, 1970
0
[...]
I pretty much read the whole user manual. It certainly has features that
I've wanted in the past. Just being able to see what happened before the
trigger will be a boon. I doubt I really "need" this scope, but I sure do
want it.
[...]

As a general comment, I'm genuinely puzzled at the large number of people
who need and seemingly make regular of, the pre trigger and pre storage
facilities of digital scopes.
Can't remember the last time I needed the facility.
Am I missing out here, or doing something wrong, or thick or summat, or
what?.

Seems to me you're missing something. Moons ago scope manufacturers
spent a *lot* of money on delay lines and dual-timebase modes to do
what is trivial with digital storage and $.29 worth of code today.

Do you never trigger logic analyzers on anything but the start?
 
J

John Larkin

Jan 1, 1970
0
My wife would have fits if I ever started doing that.

When we bought and refurbed the fortune cookie factory, they built a
room just for my scopes.

John
 
J

john jardine

Jan 1, 1970
0
krw said:
[...]
I pretty much read the whole user manual. It certainly has features that
I've wanted in the past. Just being able to see what happened before the
trigger will be a boon. I doubt I really "need" this scope, but I sure do
want it.

Now all I need is about $1600 to pay for it all. Paypal donations
accepted
[...]

As a general comment, I'm genuinely puzzled at the large number of people
who need and seemingly make regular of, the pre trigger and pre storage
facilities of digital scopes.
Can't remember the last time I needed the facility.
Am I missing out here, or doing something wrong, or thick or summat, or
what?.

Seems to me you're missing something. Moons ago scope manufacturers
spent a *lot* of money on delay lines and dual-timebase modes to do
what is trivial with digital storage and $.29 worth of code today.

Do you never trigger logic analyzers on anything but the start?

Yes indeed, for logic it's essential!.
Maybe that's the difference I'm puzzling over, in that my scope gets used
about 95% for analogue.
For logic and micro stuff I've a HP1630D. Must admit though I'd rather run a
mile, before being arsed to pulling it's bulk off the shelf, clip on the
mess of pods and probes, battle with the lunatic menus and listen to the
horrendous fan noise.
john
 
J

Joerg

Jan 1, 1970
0
John said:
When we bought and refurbed the fortune cookie factory, they built a
room just for my scopes.

Ah, you bought that. That's why we didn't get fortune cookies the day
before yesterday. Oh wait, it was a Thai restaurant. Excellent dinner BTW.
 
B

BFoelsch

Jan 1, 1970
0
Ah, you bought that. That's why we didn't get fortune cookies the day
before yesterday. Oh wait, it was a Thai restaurant. Excellent dinner BTW.

I always print my own fortunes, generally something along the lines of
"Generous person across table buys dinner to-nite"

Ink-jet technology is a wonderful thing....
 
T

Terry Given

Jan 1, 1970
0
Eeyore said:
John Larkin wrote:




Nice if you don't mind 1.5V of induced 48kHz !

Graham

its quite possible that particular piece of equipment was (is) faulty.
Im pretty sure it had to pass CISPR xx at some point....

Cheers
Terry
 
T

Terran Melconian

Jan 1, 1970
0
its quite possible that particular piece of equipment was (is) faulty.
Im pretty sure it had to pass CISPR xx at some point....

That one may be worse than usual, but I recall seeing the same general
issue on mine. The probes were sitting disconnected on top of the
scope, and I started wondering what the signal was. At first I thought
it was from the lamp (a compact fluorescent known to switch around the
same frequency), but I turned it off and realized it was coming from the
scope itself. So far (knock on wood) it has not been a problem for me
in actual use, but I can confirm that the noise is present, and really
quite disappointing, considering.
 
M

Mike Harrison

Jan 1, 1970
0
Radiated emissions tend to not mater below about 30MHz..
That one may be worse than usual, but I recall seeing the same general
issue on mine. The probes were sitting disconnected on top of the
scope, and I started wondering what the signal was. At first I thought
it was from the lamp (a compact fluorescent known to switch around the
same frequency), but I turned it off and realized it was coming from the
scope itself. So far (knock on wood) it has not been a problem for me
in actual use, but I can confirm that the noise is present, and really
quite disappointing, considering.

Probably the LCD backlight - a few hundred volts at around that frequency behind an unshielded
window is bound to get out...
 
J

joseph2k

Jan 1, 1970
0
Joerg said:
Eeyore wrote:

A 465 is tricky to beat but a 2465 does it !
It sure does. The 2465 is what I usually recommend to clients. Then
they get them on EBay or through other places. Best scopes Tek ever
made IMHO. With those new little bread-box thingies I have the
impression they are just some kind of outsourced design. Like what HP
used to do with Yokogawa designs, except that the results, well, ...
The only downside with the 2465 series is that they are only available
used. And since they are some of the best scopes since sliced bread
that means used a lot. So all the encoder shafts are usually sloshing
around or like what happened to us you pull into delayed-trigger and
hear plastic pieces rain down behind the front panel, meaning it won't
switch back to non-delayed. Anyhow, it's best to budget in some serious
mechanical fixing. The knobs, shafts and so on are IMHO a bit on the
flimsy side.

The 2465 is quite a nice scope for some analog work. Mine gets used on
occasion. They are useless for digital work and I sometimes forget that
when I am at the wrong bench with the digital stuff. Low duty cycle is
a killer. The tds3000 are really nice and make it harder to go back and
use the 2465 even with its nicer user interface. No storage for
averaging or looking at noise either, just you and the phosphor.

You also mentioned the 7000 series scopes. Here you cannot give them
away. We set an entire truckload to the landfill because of that.
The only I have left has a tdr in it.- Hide quoted text -

- Show quoted text -

We have the same problem with Tek 2465's, we have them stacked up in
storage to the ceiling, nobody will touch them with a ten foot pole,
one guy uses one to prop his monitor up higher in his lab, that is
about the only use they get.

I would rather you sent one or two to me rather than put them in a landfill.
I can squeeze a few more years out of it.
 
K

krw

Jan 1, 1970
0
krw said:
[...]

I pretty much read the whole user manual. It certainly has features that
I've wanted in the past. Just being able to see what happened before the
trigger will be a boon. I doubt I really "need" this scope, but I sure do
want it.

Now all I need is about $1600 to pay for it all. Paypal donations
accepted
[...]

As a general comment, I'm genuinely puzzled at the large number of people
who need and seemingly make regular of, the pre trigger and pre storage
facilities of digital scopes.
Can't remember the last time I needed the facility.
Am I missing out here, or doing something wrong, or thick or summat, or
what?.

Seems to me you're missing something. Moons ago scope manufacturers
spent a *lot* of money on delay lines and dual-timebase modes to do
what is trivial with digital storage and $.29 worth of code today.

Do you never trigger logic analyzers on anything but the start?

Yes indeed, for logic it's essential!.
Maybe that's the difference I'm puzzling over, in that my scope gets used
about 95% for analogue.

Analog scopes can trigger off other than the source too. Delayed
(run A after B, A delayed by B, etc.) are very powerful triggering
modes for analog scopes. Digital scopes make these sorta obsolete.
For logic and micro stuff I've a HP1630D. Must admit though I'd rather run a
mile, before being arsed to pulling it's bulk off the shelf, clip on the
mess of pods and probes, battle with the lunatic menus and listen to the
horrendous fan noise.

Well... ;-) That wasn't my point.
 
M

Michael A. Terrell

Jan 1, 1970
0
Joerg said:
Depends on who is in the lab. When I had the Viewsonic terminals our
younger dog would get up and leave after turning it on. I guess the
flyback transformer whine bothered her. She gave me "the looks" before
leaving.


How often did your dog turn the terminal on? ;-)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
M

Michael A. Terrell

Jan 1, 1970
0
John said:
I'm a collector! I never sell!

I don't have many portable scopes, maybe a Kikusui or two. Mostly big
old mainframes... 535's, 545's, 547's, 7000's, a few HP180's, a few
exotics; a zillion plugins, many sampling. I do have an HP185 4 GHz
sampling scope ca 1961, with plugins and manuals; *that* is a chunk of
history, if an ugly one.

John


Have you considered cleaning the dust of a few items to display in
the lobby, to show the changes in electronics since you started your
business?


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
J

John Larkin

Jan 1, 1970
0
Have you considered cleaning the dust of a few items to display in
the lobby, to show the changes in electronics since you started your
business?

Hey, my business isn't that old!

Besides, we don't have a lobby, and seldom have visitors except for
the UPS guy and pizza delivery.

John
 
J

Joerg

Jan 1, 1970
0
Michael said:
How often did your dog turn the terminal on? ;-)

She is quite smart and would probably be able to figure that out. But
the one who does turn things on is the big one, a Rottie mix. He often
plops down near the conference table where there is a tall lamp with a
foot switch (halogen, for studying schematics). 95lbs seem to be enough
to turn it on. Then when the light bothers him he leaves. Without
turning it off.
 
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