Author Topic: Example Project: Tektronix TekProbe Adapter/Breakout  (Read 4415 times)

0 Members and 1 Guest are viewing this topic.

Offline voltsandjolts

  • Supporter
  • ****
  • Posts: 755
  • Country: gb
Example Project: Tektronix TekProbe Adapter/Breakout
« on: May 05, 2017, 08:23:44 am »
I have some TekProbes which I wanted to use on another brand of 'scope so made this adapter board.
Signal path feeds straight through on a BNC coupler.
Requires +/-18VDC supply preferably from current limited dual channel bench supply.

Overview PDF and CircuitStudio Project:
https://www.dropbox.com/sh/bcglmw3oyjebbi6/AAAEL99iNCpyd_N8FTopRDaZa?dl=0
 
 
The following users thanked this post: lowimpedance, Harvs, edavid, negativ3, onesixright, iainwhite, Neomys Sapiens

Offline JamesH-AltiumOfficial

  • Contributor
  • Posts: 37
  • Country: au
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #1 on: May 09, 2017, 04:28:36 am »
Hi voltsandjolts,

Thank you for posting your useful project! It's nicely documented and good to see CircuitStudio in use.

Also it's nice to see that you used the little known Guides feature to add guides for alignment.
For others:
Home > Board > Board Options > Guides button, opens the Snap Guide Manager.
Click the Add button to add a guide and click the ... button to snap to an object on your board.
It will snap to the object like a pad center if (Hotspot Snap) or (Hotspot Snap (All Layers)) is displayed in the Status Bar. Press Shift E to cycle through the 3 Electrical snap modes.

In the Board Options dialog, enable the Snap To Linear Guides if you'd like objects to snap to them.

Best regards,

James Harriman
Altium
 
The following users thanked this post: trevwhite

Online KE5FX

  • Super Contributor
  • ***
  • Posts: 1085
  • Country: us
    • KE5FX.COM
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #2 on: May 09, 2017, 05:53:36 am »
I'd totally buy one of these if you were selling them.  :-+  (Same Agilent scope, same Tek probes.)  How about some pogo pins for the Agilent probe interface, instead of requiring an external supply?  The voltages you need might already be available.
 

Offline tggzzz

  • Super Contributor
  • ***
  • Posts: 10252
  • Country: gb
    • Having fun doing more, with less
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #3 on: May 09, 2017, 08:27:50 am »
Consider posting the gerber files, or some PCB houses allow you to make the design available for anyone to buy (e.g. dirtypcbs.com)
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline MarkL

  • Supporter
  • ****
  • Posts: 1551
  • Country: us
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #4 on: May 15, 2017, 02:55:12 pm »
I'd totally buy one of these if you were selling them.  :-+  (Same Agilent scope, same Tek probes.)  How about some pogo pins for the Agilent probe interface, instead of requiring an external supply?  The voltages you need might already be available.
Unfortunately, the TekProbe interface needs +/15V and the Agilent autoprobe interface only supplies +/-12V.  There's some discussion of autoprobe here:

  https://www.eevblog.com/forum/projects/agilent-probe-interface-(-autoprobe-and-probe-id)/msg42290/#msg42290

Agilent/Keysight solves this problem by putting DC-DC converters in their N2744A TekProbe adapter.  So it's possible, but more complicated.

A lot of Agilent/Keysight scopes are fairly limited in the power available from the autoprobe interface anyway, so the external power supply I don't think is so bad.  Ideally, a solution could implement both by getting power from the autoprobe interface for low power probes, with an option for external power if more is needed.
 
The following users thanked this post: Someone

Offline voltsandjolts

  • Supporter
  • ****
  • Posts: 755
  • Country: gb
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #5 on: May 16, 2017, 09:01:55 am »
I wanted this adapter to be usable with any scope so didn't consider using Agilent Autoprobe interface.

Consider posting the gerber files

Now included in the download (gerber + drill)
 

Offline Neomys Sapiens

  • Super Contributor
  • ***
  • Posts: 1335
  • Country: de
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #6 on: June 30, 2017, 08:25:26 pm »
Well, this is not exactly what I thought about, but close. And your layout contains the necessary data. I want to build a real breakout box for TekprobeII, not an interface for other scopes. Coax needs to go through, all other lines ending in double 2mm jacks with 10mm or 12.5mm shorting plugs.
 

Offline Harvs

  • Super Contributor
  • ***
  • Posts: 1161
  • Country: au
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #7 on: June 30, 2017, 11:21:45 pm »
Also it's nice to see that you used the little known Guides feature to add guides for alignment.
For others:
Home > Board > Board Options > Guides button, opens the Snap Guide Manager.
Click the Add button to add a guide and click the ... button to snap to an object on your board.

Thanks voltsandjolts for posting, and to James for pointing out something I'm not currently using.

However I can't for the life of me find the ... button.  I must be blind.  Could someone point it out for me?

 

Offline voltsandjolts

  • Supporter
  • ****
  • Posts: 755
  • Country: gb
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #8 on: July 02, 2017, 04:26:36 pm »
Hi Harvs,
Prepare to kick yourself!
In the table click on a X or Y value cell for a guide or snap point, as if you were editing the value.
When you click on the cell the fabled [...] button shall appear at the side of that cell which allows you to select an object to snap to.
 

Offline Harvs

  • Super Contributor
  • ***
  • Posts: 1161
  • Country: au
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #9 on: July 02, 2017, 10:40:07 pm »
Hi Harvs,
Prepare to kick yourself!
In the table click on a X or Y value cell for a guide or snap point, as if you were editing the value.
When you click on the cell the fabled [...] button shall appear at the side of that cell which allows you to select an object to snap to.

Oh god...  Thanks!
 

Offline JamesH-AltiumOfficial

  • Contributor
  • Posts: 37
  • Country: au
Re: Example Project: Tektronix TekProbe Adapter/Breakout
« Reply #10 on: July 03, 2017, 05:54:11 am »
No problem harvs, oh I should have posted a screen capture!

Best regards,

James Harrman
Altium
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf