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Old 9th Jan 2012, 8:11 pm   #81
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

happy new year

Tek 310A Dual Beam Oscilloscope...

greetings
Martin
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Old 9th Jan 2012, 8:21 pm   #82
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

Tek 515A (the new case one)

the painting Co made a mistake in the color selection. May be I will repeat that to get a true türkis ( ~RAL6015, Tek blue). But it looks very nice, my self made Case...

greetings
Martin
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Old 9th Jan 2012, 8:34 pm   #83
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Default Re: Oscilloscope Collection / Junky

Yes,i would need a list as well with all that gear!

David GM8JET
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Old 9th Jan 2012, 8:52 pm   #84
Craig Sawyers
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Default Re: Oscilloscope Collection / Junky

For anyone interested, I got Tek blue colour and matt texture matched some years ago by Paints4u. I have no idea whether they still have the formulation on file, but anyone interested drop me a PM and I'll look out the details.

I got it both in spray cans, and in a tin with the correct thinners for paint spray application.
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Old 12th Jan 2012, 12:20 am   #85
Richard984
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Default Re: Oscilloscope Collection / Junky

Tek 310A Dual Beam Oscilloscope.

Yes, you cannot have too many 310s.
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Old 14th Jan 2012, 1:11 pm   #86
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

my next restoration will be a Tek 305DMM
it have a bad HV module, the spare part is on the way from sweden.

greetings
Martin
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Old 30th Jan 2012, 8:36 pm   #87
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Default Re: Oscilloscope Collection / Junky

I have still a problem to fix this 305DMM...

I found yesterday Tek 310A. (I love to restore tube Tek)

greetings
Marti
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Old 31st Jan 2012, 7:59 pm   #88
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Default Re: Oscilloscope Collection / Junky

Oscilloscopes are like landrovers: you always end up with more than you need.
I've got four
My best one is a Gould 4030 DSO
the reserve one is a Scopex 4D10B which I have had from new
and the other two are just taking up space
one is a sevicscope type D31 in need of some attention
I think the other one is a Tek but the label is missing. It is transistor, has a central modual with a plugin unit either side
the central modual is numbered 7200 Display unit.
to the left is a two channel input numbered 7212
And to the right is a timebase numbered 7202
What is it?
also it has a 6 pin plug in the back for the mains input. Does anybody know what the connections are and where I might get a suitable socket?
I rescued it from somewhere with one of the side moduals bent, straitened it out, but have never tried to put power on to it.
Geoff
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Old 31st Jan 2012, 8:19 pm   #89
Craig Sawyers
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Default Re: Oscilloscope Collection / Junky

Er - I'm at 17 Tektronix 'scopes and counting. And that is the tip of a very large test equipment iceberg. My wife, as I often remind her, is a saint.

Craig
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Old 31st Jan 2012, 8:59 pm   #90
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Default Re: Oscilloscope Collection / Junky

Quote:
Originally Posted by geoff_n View Post
think the other one is a Tek but the label is missing. It is transistor, has a central modual with a plugin unit either side
the central modual is numbered 7200 Display unit.
to the left is a two channel input numbered 7212
And to the right is a timebase numbered 7202
What is it?
Interesting. That doesn't sound like any Tektronix I've ever heard of. Any chance of posting a photo? The only '7200' scopes I can see on Google are by LeCroy, and are (relatively) modern DSOs. I'm curious.

Chris
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Old 31st Jan 2012, 9:18 pm   #91
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Default Re: Oscilloscope Collection / Junky

Sounds like a Dynamco, dual trace and delayed sweep plug ins.
Rob.
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Old 31st Jan 2012, 10:54 pm   #92
geoff_n
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Default Re: Oscilloscope Collection / Junky

There should be a photo attached to this reply
As you can see it's quit a dinky thing quite portable
If this one is succesfull I will do a couple more .
Geoff
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Old 31st Jan 2012, 11:17 pm   #93
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I've cropped the two side moduals out of the original photo so as to get the detail.
There's a calibration due label for june 1980 and I think it is British made.
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Old 31st Jan 2012, 11:43 pm   #94
cmjones01
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Default Re: Oscilloscope Collection / Junky

That's definitely not a Tektronix. I agree with Rob that it's a Dynamco.
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Old 1st Feb 2012, 12:08 am   #95
glowinganode
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Default Re: Oscilloscope Collection / Junky

Definitely Dynamco, this was the follow on from the popular 71xx series.
Rob.
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Old 1st Feb 2012, 9:19 pm   #96
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Default Re: Oscilloscope Collection / Junky

I'm also blessed with a saint that can tell when a new addition to my inventory arrives. Got to learn and keep the car boot closed.

Cheers Craig
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Old 2nd Feb 2012, 6:20 pm   #97
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Default Re: Oscilloscope Collection / Junky

Dynamco 7200. A very niece little portable scope, with 7 x 5 screen, to 15 Mhz.
Manual is dated 1969. Also appears as Post Office type 14A, with dual trace, twin TB. Priced in March 1973 at £435 for single TB, and £485 for twin TB. Particularly good small Brimar tube with mesh pda; D10-210, or GEC/MOV 974W.
Geoff_n asks about the power connector. It is a 6 pin Bulgin type P427 chassis male socket, for mains (A= line, B = neutral, C= earth) and from the add-on DC converter (D = AC,E = earth, F = AC, being 24-0-24V or so at 80Hz). Pins are usually marked, but they go from A in order, counting clockwise from the indent, looking onto the P428 cable female plug. A quick check with the ohmmeter will confirm. A to B, via the fuse and on/off switch to the transformer primary. Changing the mains setting 110/250 will change the resistance. C and E to chassis. D & F go to the secondary windings on the transformer, part of the winding which feeds the 20V bridge rectifier for the +-20V rails. Bill m0wpn
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Old 3rd Feb 2012, 11:18 am   #98
Craig Sawyers
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Quote:
Originally Posted by Renato65 View Post
I'm also blessed with a saint that can tell when a new addition to my inventory arrives. Got to learn and keep the car boot closed.
There are many and various tricks. Possibly the most effective are:

(1) Sneak it in, and set it up. When the inevitable question is asked, the response is "Had it for ages - surprised you haven't seen it"

(2) Use the existence of an overflow lock-up. "Just pulled it from the lock-up to restore"

Of course the awkward question that is difficult to answer is "Now - where are you going to put it"

Craig

PS she also reminds me that there is a fine dividing line between "hobby" and "mental illness". I remind here that it could be worse - I could be into military vehicles or traction engines.
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Old 3rd Feb 2012, 8:12 pm   #99
geoff_n
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Default Re: Oscilloscope Collection / Junky

Thanks Very much to Bill for the info on my Dynamco and to the other lads who helped identify it.
I will have a go at getting it going soon,but I shall have to reform some caps before I power it up.
The low voltage AC input could be quite usefull. I sometimes need a scope in odd places such as a farmyard or a quarry. so the ability to run the scope from the Landrover battery would be better than trying to use the often dodgey mains in a farmyard. I tried using the Gould on an inverter once and got a shock everytime I touched it. So I soon gave that up.
Cheers for now
Geoff
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Old 16th Feb 2012, 9:34 pm   #100
6AL5W-Martin
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Wink Re: Oscilloscope Collection / Junky

Tek 310A #100676, made in Guernsey C.I.


with some little problems.

greetings
Martin
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