Date   

Tek Scopes on Government deals

Bill Higdon
 


Re: Help needed finding a connector as used in TDS scopes.

Jared Cabot
 

Unfortunately the Champ part (1-1734099-0) won't fit as the staggering of the pins is opposite to the footprint on the PCB.

Here is the underside of that part:
https://i.imgur.com/DGVLdeO.jpg

Here is the top of the PCB it needs to fit into:
https://i.imgur.com/C3FEtuA.jpg


Re: Type 106 Adjustment

tgerbic
 

Yes the silicon diode mod. Was wondering if someone in the past had performed the mod and got it wrong.


Re: Help needed finding a connector as used in TDS scopes.

Jim Ford
 

I'll take Amp/Tyco/TEConnectivity over Molex any day.  From bad experiences with Molex.         Jim Ford Sent from my T-Mobile 4G LTE Device

-------- Original message --------From: Bruce Lane <kyrrin@...> Date: 1/21/22 6:02 PM (GMT-08:00) To: TekScopes@groups.io Subject: Re: [TekScopes] Help needed finding a connector as used in TDS scopes.     Indeed I do. Those are actually made by at least three different companies: Tyco/AMP, Hirose Electric and Molex. They're 1.27mm pitch on the contact spacing, and DigiKey has a generous selection at this link.     Here's one example of a mating part, for the one in your picture, from DigiKey.https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/1-1734037-0/1121339     That should help you track down what you need. Happy tweaking.On 21-Jan-22 08:04, Jared Cabot via groups.io wrote:> Hi all,>> as part of repairing a couple TDS600/700 series scopes, I need to source a few connectors.> Does anyone know what this connector is and where I can find some? I can't see any markings on it to even get me started..>> https://i.imgur.com/UBmmtoZ.jpg>> Thanks!>>> >>-- Bruce Lane, ARS KC7GRkyrrin@..."Quando Omni Flunkus Moritati" (Red Green)


Re: Option 7 for DC-508A

Greg Muir
 

I unfortunately don’t have any documentation on this option but you might gain a little information by going here:

https://groups.io/g/TekScopes/topic/dc508_help_with_photos_option/30289354

Greg


Re: Help needed finding a connector as used in TDS scopes.

Bruce Lane
 

Indeed I do. Those are actually made by at least three different companies: Tyco/AMP, Hirose Electric and Molex. They're 1.27mm pitch on the contact spacing, and DigiKey has a generous selection at this link.

    Here's one example of a mating part, for the one in your picture, from DigiKey.

https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/1-1734037-0/1121339

    That should help you track down what you need. Happy tweaking.

On 21-Jan-22 08:04, Jared Cabot via groups.io wrote:
Hi all,

as part of repairing a couple TDS600/700 series scopes, I need to source a few connectors.
Does anyone know what this connector is and where I can find some? I can't see any markings on it to even get me started..

https://i.imgur.com/UBmmtoZ.jpg

Thanks!



--
Bruce Lane, ARS KC7GR
kyrrin@...
"Quando Omni Flunkus Moritati" (Red Green)


Re: Help needed finding a connector as used in TDS scopes.

durechenew@...
 

Seems close (not significant differences) with 1-1734099-0, used in TDS3000.

https://www.ebay.ca/itm/163591113538

TT


Option 7 for DC-508A

 

Does anyone happen to have a PDF of the instructions that accompanied the Tektronix 040-0789-00 field modification kit for adding Option 7 to the DC-508 or DC-508A counters?

Bruce, KG6OJI


Re: What is it about Z-axis amps?

 

Where I wrote "pin #4 of U1560" I should have written "pin #9 of U1560"; I mis-traced the long parallel tracks on the schematic.

-- Jeff Dutky


Re: TDS380 Jerky Response with Measurements Turned On

Harvey White
 

Shouldn't be a factor, adding an extra display that exactly replicates the internal display is just paralleling signals.

If the external display could be written to separately, then it would be CPU intensive.

Harvey

On 1/21/2022 5:15 PM, David Templeton wrote:
How are you displaying on that monitor? , I presume it must have a secondary output, could that be a factor?





Re: Type 106 Adjustment

Stephen
 

On Fri, Jan 21, 2022 at 04:39 PM, <Zentronics42@...> wrote:

Interleaved.


The DSA602A should work though it is being pushed to the practical limit. It
will not be able to do amplitude measurement based on the -3db limit and being
in the upper range of the falling curve. Wave shape should be accurate.
However the time base in the DSA is plenty fast once it kicks in to sampling
mode. That is also a good point. The DSA is a sampling scope so you are good
to go there. I will take some measurement on my 106 with the DSA so we have
something to compare to.
Yes, please do.

The DSA will kick in and out of sampling >mode based. on the time base settings. This is not bad just they way they implemented the
function in the 90's era (I think for the DSA)

But Stephen is correct the waves forms of the fast rise should look exactly
like the fast fall just inverted something is definitely wrong on the fast
rise board.
Thanks. If you have seen the latest pictures after I switched around Q103 and Q124, things look much, much better.
I wouldn’t mind see how flat the entire first half of the fast + waveform is on yours. Because although mine is now looking less funky, the hump is still there, albeit a bit less pronounced.

At this point I’m trying to determine if I should try to make it flatter.


Ill be back in the lab tonight if there is anything that I can do to help the
cause.

Zen
Thank you Eric, you’ve always been m, like many others, very humble and helpful, and your YouTube channel helped me bring this 106 back to life.

Regards,


Re: Wanted: Tektronix 067-0645-0X TM 500 flexible extender (or equivalent)

fiftythreebuick
 

Soon as I figure out how to send you a photo I'll get it on the way!


Re: TDS380 Jerky Response with Measurements Turned On

Dave Voorhis
 

I don’t own a TDS380 so I don’t have a basis of comparison, but it looks completely normal to me. I would expect measurements to consume some CPU horsepower, with a corresponding slowdown or latency elsewhere.

On 21 Jan 2022, at 20:11, Richard Peterson <saaber1@...> wrote:

Any thoughts? Normal?


Re: TDS380 Jerky Response with Measurements Turned On

Richard Peterson
 

Any thoughts? Normal?


Re: Help needed finding a connector as used in TDS scopes.

Dave Casey
 

Have a look at TE part number 1-1734099-0. Not sure if anyone has stock,
but Mouser's minimum buy is 1 piece (when they have them).

Dave Casey

On Fri, Jan 21, 2022 at 12:23 PM Jared Cabot via groups.io <jaredcabot=
protonmail.com@groups.io> wrote:

Tracked it down to Tektronix part number 131-4619-00, 3M part number
91100-1201BP.


https://www.mouser.jp/ProductDetail/3M-Electronic-Solutions-Division/91100-1201BP?qs=pxWKQutMSmprHMNm7tgF9Q%3D%3D

Now to find somewhere to buy a handful without having to buy a box of
1000..........






Re: Help needed finding a connector as used in TDS scopes.

Jared Cabot
 

Tracked it down to Tektronix part number 131-4619-00, 3M part number 91100-1201BP.

https://www.mouser.jp/ProductDetail/3M-Electronic-Solutions-Division/91100-1201BP?qs=pxWKQutMSmprHMNm7tgF9Q%3D%3D

Now to find somewhere to buy a handful without having to buy a box of 1000..........


Re: Type 106 Adjustment

Zentronics42@...
 

This is correct on a DSA 602a there are 2 distinct modes of operation straight sampling and equivalent time sampling. You can clearly tell which mode it is in based on how long it takes to build a waveform. Straight sampling is instant. However in equivalent time mode it takes longer to build the wave form. But it does work quite well.

Zen

-----Original Message-----
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Raymond Domp Frank
Sent: Friday, January 21, 2022 10:57 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Type 106 Adjustment

On Fri, Jan 21, 2022 at 04:39 PM, <Zentronics42@...> wrote:


The DSA602A should work though it is being pushed to the practical
limit. It will not be able to do amplitude measurement based on the
-3db limit and being in the upper range of the falling curve. Wave shape should be accurate.
However the time base in the DSA is plenty fast once it kicks in to
sampling mode. That is also a good point. The DSA is a sampling scope
so you are good to go there. I will take some measurement on my 106
with the DSA so we have something to compare to. The DSA will kick in
and out of sampling mode based on the time base settings. This is not
bad just they way they implemented the function in the 90's era (I
think for the DSA)
The 106 can generate square waves with a frequency between 10Hz and 1MHz so even a 10MHz 'scope can show their amplitude. It just cannot show anything even resembling the signal's rise time.
I guess that with "it kicks in to sampling mode" you mean "switches from real-time sampling to equivalent time sampling". All digital 'scopes are sampling 'scopes, it's just the difference between one-shot sampling and repetitive sampling to produce a usable waveform.

Raymond


Help needed finding a connector as used in TDS scopes.

Jared Cabot
 

Hi all,

as part of repairing a couple TDS600/700 series scopes, I need to source a few connectors.
Does anyone know what this connector is and where I can find some? I can't see any markings on it to even get me started..

https://i.imgur.com/UBmmtoZ.jpg

Thanks!


Re: Type 106 Adjustment

 

On Fri, Jan 21, 2022 at 04:39 PM, <Zentronics42@...> wrote:


The DSA602A should work though it is being pushed to the practical limit. It
will not be able to do amplitude measurement based on the -3db limit and being
in the upper range of the falling curve. Wave shape should be accurate.
However the time base in the DSA is plenty fast once it kicks in to sampling
mode. That is also a good point. The DSA is a sampling scope so you are good
to go there. I will take some measurement on my 106 with the DSA so we have
something to compare to. The DSA will kick in and out of sampling mode based
on the time base settings. This is not bad just they way they implemented the
function in the 90's era (I think for the DSA)
The 106 can generate square waves with a frequency between 10Hz and 1MHz so even a 10MHz 'scope can show their amplitude. It just cannot show anything even resembling the signal's rise time.
I guess that with "it kicks in to sampling mode" you mean "switches from real-time sampling to equivalent time sampling". All digital 'scopes are sampling 'scopes, it's just the difference between one-shot sampling and repetitive sampling to produce a usable waveform.

Raymond


Re: Type 106 Adjustment

Zentronics42@...
 

The DSA602A should work though it is being pushed to the practical limit. It will not be able to do amplitude measurement based on the -3db limit and being in the upper range of the falling curve. Wave shape should be accurate. However the time base in the DSA is plenty fast once it kicks in to sampling mode. That is also a good point. The DSA is a sampling scope so you are good to go there. I will take some measurement on my 106 with the DSA so we have something to compare to. The DSA will kick in and out of sampling mode based on the time base settings. This is not bad just they way they implemented the function in the 90's era (I think for the DSA)

But Stephen is correct the waves forms of the fast rise should look exactly like the fast fall just inverted something is definitely wrong on the fast rise board.

Ill be back in the lab tonight if there is anything that I can do to help the cause.

Zen

-----Original Message-----
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of David Templeton
Sent: Friday, January 21, 2022 10:19 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Type 106 Adjustment

Raymond, I was oversimplifying too, I would say any modern 2GHz scope should work.

I tend to get complacent with scope availability since my day to day job has always had 1GHz to 3GHz scopes available.

David

On 21 Jan 2022, at 14:01, Raymond Domp Frank <hewpatek@...> wrote:

On Fri, Jan 21, 2022 at 02:44 PM, David Templeton wrote:


Raymond, I was kind of paraphrasing. The question was if a modern
scope could be used. And not too "modern" scopes, like the TDS7254 or
DPO7254 could be capable as modern digital scopes of doing the same
job, or similar aged LeCroys. Set the timebase to what they recommend
and you should see the right waveform (assuming the unit is working of course ;) ).

On your 7603 example, even if the mainfram is 100MHz, the sampling
head must have the bandwidth capability or you wont see that 1ns rise.
Hi David,
Reading back my message, I realized that it could be seen as criticism of what you wrote. It wasn't meant that way and I apologize if that was how it came through.
In fact my reason to write my message was mostly the culmination of several previous messages in the thread and when I read your sentence about the 10 or 20GS/s, I thought it could add to the impression that sample rate is of great importance to achieve high BW (for periodic events).
I had interpreted the OP's question as asking if there was something special about a sampling scope that would allow the intended adjustment. That question and the fact that all modern 'scopes are digital and therefore are sampling 'scopes landed in the various posts in various ways, which I thought could be a source of confusion.

In my example, I tried to illustrate using a sampling head (Tek S-4) and achieving 14GHz BW with a 100MHz 'scope.

Raymond




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