User talk:Rubasch: Difference between revisions
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As a substitude for the [[Media:R114 dielectric constant.pdf| R114]] I used [[Media:Shell-diala-s4-zx-i english.pdf| Shell-diala-s4-zx-i]] with a dielectric constant of 2. | As a substitude for the [[Media:R114 dielectric constant.pdf| R114]] I used [[Media:Shell-diala-s4-zx-i english.pdf| Shell-diala-s4-zx-i]] with a dielectric constant of 2. | ||
The diala oil has a high break down voltage of 70 kV, is enviroment friendly, not corrosive and cheap. | The diala oil has a high break down voltage of 70 kV, is enviroment friendly, not corrosive and cheap.<br> | ||
Drinking the oil is deadly, because it will creap into the lung! | Drinking the oil is deadly, because it will creap into the lung! | ||
| Line 199: | Line 199: | ||
The Probe body is modified as follow: | The Probe body is modified as follow: | ||
* cleaned in ultrasonic bath | * cleaned in ultrasonic bath (every printing on the device will disapear!) | ||
* cleaned with isopropanol | * cleaned with isopropanol | ||
* airfree filled with oil | * airfree filled with oil | ||
Revision as of 02:46, 20 October 2023
7000 Overview Table
Hi, I've extended the table a bit, what do you say?
- Is writing speed in cm/μs not a cleaner spec than div/μs?
- Can you add the digitizers please?
- --Peter (talk) 08:11, 20 September 2023 (PDT)
- Mostly I found div/µs, that's why I used it. but we can change it of course.
- Done the digitizer. Kinda. Maybe they belong in another table with better fitting details (sample rate, resolution, etc.)
- Barrytech said there is no R7704A http://www.barrytech.com/tektronix/tek7000/tekr7704.html. should we delete it?
- checked in catalogs - the R7704 remained non-A and was available until 1985 -- Peter
- about the 7603: what is "some" cooling? :-)
- some models, as noted on the page --Peter
- are you sure with the 7623B writing speed? should it not more like the 7633?
- spec from 1991 catalog, p.68 --Peter
- I love the table! I came here to mention that I have a 7704A with a cooling fan - but you also have the question re the 7603. The weirdest thing is that the 7704A service manual makes no mention of a fan! This led me down a bit of a rabbit hole of reading... I'd not be surprised if some 7603s had cooling fans. I thought that there might have been a period they tried some fans before Tek change from linear PSUs to the more efficient switching PSUs - I've found no data. Qfissler (talk) 12:24, 20 September 2023 (PDT)
On the page 7000-series scopes there are production dates for the digitizers. But there is no source for that information... --Rubasch (talk) 10:59, 22 September 2023 (PDT)
7000 Time Table
| Scope | Bandwith [MHz] |
Years of Sales |
Start of Sales |
End of Sales |
1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7313 | 25 | 8 | 1972 | 1979 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||
| 7403N | 65 | 6 | 1970 | 1975 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||||
| R7403N | 65 | 5 | 1971 | 1975 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| 7503 | 90 | 3 | 1970 | 1972 | 1 | 1 | 1 | |||||||||||||||||||||
| 7504 | 90 | 3 | 1969 | 1971 | 1 | 1 | 1 | |||||||||||||||||||||
| 7514 | 90 | 5 | 1970 | 1974 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| 7603 | 100 | 19 | 1972 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| R7603 | 100 | 18 | 1973 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| 7613 | 100 | 19 | 1972 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| R7613 | 100 | 18 | 1973 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| 7623(A,B) | 100 | 4 | 1972 | 1992 | A | A | A | A | A | A | A | A | A | A | A | A | A | A | A | A | B | B | ||||||
| 7623 | 100 | 4 | 1972 | 1975 | 1 | 1 | (-) | 1 | ||||||||||||||||||||
| R7623 | 100 | 2 | 1973 | 1974 | 1 | 1 | ||||||||||||||||||||||
| 7623A | 100 | 16 | 1975 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| R7623A | 100 | 17 | 1975 | 1991 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| 7623B | 100 | 2 | 1991 | 1992 | B | B | ||||||||||||||||||||||
| R7623B | 100 | 2 | 1991 | 1992 | B | B | ||||||||||||||||||||||
| 7633 | 100 | 16 | 1975 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| R7633 | 100 | 16 | 1975 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| 7704 | 150 | 4 | 1969 | 1972 | 1 | 1 | 1 | 1 | ||||||||||||||||||||
| R7704 | 150 | 16 | 1970 | 1985 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| 7704A | 200 | 16 | 1972 | 1987 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| 7834 | 400 | 10 | 1977 | 1986 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||
| 7844 | 400 | 15 | 1974 | 1988 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||
| R7844 | 400 | 18 | 1975 | 1992 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| 7854 | 400 | 11 | 1980 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||
| 7904 | 500 | 13 | 1971 | 1983 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||
| R7903 | 500 | 9 | 1974 | 1982 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||
| 7904A | 500 | 7 | 1984 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||||
| 7934 | 500 | 4 | 1987 | 1990 | 1 | 1 | 1 | 1 | ||||||||||||||||||||
| 7104 | 1000 | 13 | 1978 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||
| R7103 | 1000 | 6 | 1985 | 1990 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||||
| 7D20 | 70 | 11 | 1982 | 1992 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||
| 7612D | 90 | 9 | 1980 | 1988 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||
| R7912 | 500 | 6 | 1973 | 1978 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||||
| 7912AD | 500 | 10 | 1978 | 1987 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||
| 7912HB | 750 | 3 | 1987 | 1989 | 1 | 1 | 1 | |||||||||||||||||||||
| P7001 | 175 | 9 | 1973 | 1981 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
No Storage Analog Storage Digital Storage Dual Beam Unknown
Quick edit in the table generator:
| No Storage |
| Analog Storage |
| Digital Storage |
| Dual Beam |
| Unknown |
What do think about condensing the information like in the example I have added above, 7623 (A,B)?
- --Peter (talk) 03:36, 19 October 2023 (PDT)
- I like it - but in that form, it loses a little bit of info where the 7623 with no suffix was available while the 7623A was also available - it's easy combining A and B by comma separating - but a null suffix... how would we show that? Hmmm - I tried (-) - just to show what I mean. Qfissler (talk) 04:48, 19 October 2023 (PDT)
- I also thought about combining scopes like the 7834--> 7934 but not sure if it still makes sense. Right now have not a lot of time for this. So everybody feel free to edit! --Rubasch (talk) 05:30, 19 October 2023 (PDT)
- We know from catalogs or announcements in ads, articles in TekScope etc. when new models came out. There is no comparable hard info on discontinuation - mostly this comes from models no longer appearing in catalogs. I think it is therefore not meaningful to infer from the model pages that there was any sort of overlap - at some time in 1991 you got a 7623B, whether there's a theoretical choice that you could have requested a 7623A as well is not substantiated by the information we have collected – therefore the box for the first year when the newer model came out would simply show that, i.e. 1991 shows "B". I also find the "(-)" symbol very awkward. The colored box says the model was available in that year, the fact that there is no suffix in that box says it's the base model. Thirdly, I would only combine suffixes, not different models. Just my opinion in the "keep it simple" spirit. --Peter (talk) 06:37, 19 October 2023 (PDT)
- I also thought about combining scopes like the 7834--> 7934 but not sure if it still makes sense. Right now have not a lot of time for this. So everybody feel free to edit! --Rubasch (talk) 05:30, 19 October 2023 (PDT)
- I like it - but in that form, it loses a little bit of info where the 7623 with no suffix was available while the 7623A was also available - it's easy combining A and B by comma separating - but a null suffix... how would we show that? Hmmm - I tried (-) - just to show what I mean. Qfissler (talk) 04:48, 19 October 2023 (PDT)
P6015 refill with oil
R114 has an absolute permittivity/dielectric constant of ≈2 as a liquid and near 1 as a gas.
As a substitude for the R114 I used Shell-diala-s4-zx-i with a dielectric constant of 2.
The diala oil has a high break down voltage of 70 kV, is enviroment friendly, not corrosive and cheap.
Drinking the oil is deadly, because it will creap into the lung!
Disasembling the probe body:
- The resistor should never be touched
- the resistor is plugged in and can be pulled out
- The "golden cap" (resistor end cap) is screwed in. Use a big phillips screwdriver, put some cloth around it so no edges poke out, press it gently into the cap and turn. Be carefull!
The Probe body is modified as follow:
- cleaned in ultrasonic bath (every printing on the device will disapear!)
- cleaned with isopropanol
- airfree filled with oil
Asembling the probe body:
- put everything together (gold cap, resistor)
- hold the probe body upright
- put the sealing ring on top of the probe body
- fill the probe body until the oil spills over the sealing ring
- put the probe togehter
- clean up the mess
The compensation box is modified as follow:
- C1: 47 pF ceramic/polystyrene capacitor parallel
- C2: 220 pF ceramic/polystyrene capacitor parallel
- C3: 100 pF polystyrene capacitor parallel
Compensation:
- follow the rules in the manual
- the probe cable should be stretched out, because it has an importend influence on the first 100 ns
As a rule:
- if you can't tight C1/C2/C3 not as hard as you need for compensation: you need more capacity.
- if you can't loose C1/C2/C3 not as much as you need for compensation: you have too much capacity.
Using only ceramic capacitor seems to increase the ringing.
For soldering the capacitors into the compensation box, a hi-power soldering iron is needed as some pins have to be soldered directly to the chassis.
The modified P6015 is tested at 20 kV DC for 5 min.
oszillograms:
| empty (1000 V peak) | oil filled without compensation (100 V peak) | oil filled with compensation (1000 V peak) | |
|---|---|---|---|
| 50 ns / div |  |
 |
 |
| 100 μs / div |  |
no file |  |
| 1 ms / div |  |
 |
 |
Test are done with a natronic KHT1000D probe calibrator.
- This is great, thanks! I had a quick look and only found 20 liter cans as the smallest order unit, do you have a source for less (group purchase - Europe?)
- --Peter (talk) 03:36, 19 October 2023 (PDT)
- It took me some time to figure out the right solution. At my company we bought 50 l. I use that. For someone living next to Berlin I can give a refill ;-) sending it to the US will be to expensive, I think. Giving away 1-2 l should be OK, so if some people get together, I can help. On the other hand, many other oils should be usefull, I just haven't tested them. Greetings, --Rubasch (talk) 05:26, 19 October 2023 (PDT)
- --Peter (talk) 03:36, 19 October 2023 (PDT)