"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
I bought an assortment of 1% 1/4 watt resistors from a Chinese source on ebay. They came in strips of 100 each value. Only about 1 of 100 were within tolerance.
I guess that's their idea of 1% tolerance.
;-)
Sounds like something RadioShaft would have done. A floor sweeping grab bag.
Over $10,000? How many are you ever going to see in use?
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
$10K hasn't been a lot for a scope for thirty years. In the early '70s, a full-boat 7904 was easily twice that. ...in different dollars.
This one costs $25.000:
And if you buy active probes and other accessory, it could be easily going up to $50.000 (a 50 GHz active probe costs more than a good x GHz scope, x $10.000 scope, because they need it for SDI and other high speed applications. But if you don't need it full-time, it would make more sense to rent it when you need it.
-- Frank Buss, http://www.frank-buss.de piano and more: http://www.youtube.com/user/frankbuss
I see lots in use, regularly. Not that I'd always spent that much if it was my decision. So far I could scope everything I needed with the Tek
7704, the 200MHz Taiwanese DSO, or a 1GHz boat anchor DSO I landed via silent auction at a factory fire sale.The 7704A is still in use here. So Michael, there :-)
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
If we ever get another decent sized project, I'm planning on lobbying for a MSO3034, which is about $14K with the SPI/I2C and I2S support. Then, when the firmware types slip schedules I'll tell management that they should have had the scope so they could see what's happening. ;-)
For some reason I never liked the 7704A. The only one I bought was one of the split ones, with the A/Ds in the middle section (the original DPO - Digital Processing Oscilloscope).
Well, Tek just launched a 100Gs/s scope. AFAIK its >$100k excluding matching probes. I guess some people are going to buy those.
-- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
But those were the only way to get the performance you needed. Today, there are alternatives.
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
'So there' isn't a new scope.
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
Rental is OK, but at the end you have little to show for it. One place I worked had about 100 Leader 508 scopes in the metrology system. They were used wherever possible. They were over 20 years old, and sold new for about $500. There were about 35 newer scopes, mostly in engineering which didn't do a thing to help on the production floor where they were used all day, every day.
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
Of course they will, but how many?
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
I have an old Leader that I dearly loved, but it's lost focus. I'm considering sending it in for refurb. ...Jim Thompson
--
| James E.Thompson, CTO | 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 http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
ond
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oit
of
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a .Archie will buy a dozen. He personally buys only the finest. He stacks them up like cord wood, just to make sure he has backups. Right Archie?
Certainly, but the performance point has just shifted. $10K is *not* a lot to spend on a scope. Like I said earlier, even the MSO3034 is about $13K. It's
*certainly* not top-o'-the-line.
So, sort of a Dear Leader?
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Truly... it's really analog :-) ...Jim Thompson
--
| James E.Thompson, CTO | 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 http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Have you checked the resistors in the intensity/focus divider chain? I repaired a lot of scopes with just a couple new resistors in that circuit.
-- For the last time: I am not a mad scientist, I'm just a very ticked off scientist!!!
I should open it up myself first. ...Jim Thompson
--
| James E.Thompson, CTO | 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 http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
it
Yup. Check the value of resistors with HV DC across them... likely one or more have shifted in value.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
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