Author Topic: > 1 GHz DIY differential probes  (Read 29452 times)

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Offline the Willows

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Re: > 1 GHz DIY differential probes
« Reply #125 on: February 20, 2019, 09:44:24 am »
Your are the best.
Thanks!

 

Online nctnico

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Re: > 1 GHz DIY differential probes
« Reply #126 on: March 02, 2019, 07:45:58 pm »
The first batch of 9 probes is ready to go. The product name has become 'DIP1400' (DIfferential Probe 1400MHz). The bandwidth is +/-3dB up to 1.4GHz.



Datasheet:
http://www.nctdev.nl/NCT%20Instruments%20DIP1400%20V1.0.pdf

The final price is 125 euro ex. VAT ex. Paypal / wire transfer fees. Shipping in Europe is 16 euro, worldwide 27 euro including insurance.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
The following users thanked this post: Mechatrommer, rx8pilot, 2N3055, Manx, paul67

Offline paul67

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Re: > 1 GHz DIY differential probes
« Reply #127 on: March 03, 2019, 09:51:27 pm »
Looks great nctnico :-)
PM Sent with purchase request...
 

Offline rsjsouza

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Re: > 1 GHz DIY differential probes
« Reply #128 on: March 04, 2019, 01:32:57 am »
Great work, Nico! It will be on my wish list as my finances for hobbies are quite depleted at the time.

I read the datasheet and spotted a couple of typos:
Page 3: pads cannot be torn off very easily

Page 6: A more coarse measurement of the bandwidth

One question:
Page 4: do you have a characterization for the worst case scenario on the table?

Again, great work!
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline paul67

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Re: > 1 GHz DIY differential probes
« Reply #129 on: March 14, 2019, 10:29:26 pm »
Thanks for the delivery of the probe, Nico. It works really nicely! I'm very happy with it. I wondered, what do you do with the LMH3401 inverting output... connect directly to 0V, or...?
I looked at the datasheet but couldn't see guidance for using in single-ended output mode.
 
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Online nctnico

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Re: > 1 GHz DIY differential probes
« Reply #130 on: March 14, 2019, 10:35:13 pm »
Thanks for the delivery of the probe, Nico. It works really nicely! I'm very happy with it. I wondered, what do you do with the LMH3401 inverting output... connect directly to 0V, or...?
I looked at the datasheet but couldn't see guidance for using in single-ended output mode.
The inverted output is terminated to ground with a (in total) 50 Ohm resistor so both output see (about) the same load.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Evodad

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Re: > 1 GHz DIY differential probes
« Reply #131 on: November 01, 2019, 06:04:13 pm »
Hi ntcnico,

Any chance you have any probes left ?
This was an interesting thread. Why did it not survive longer ? Any spin-offs ?

// Per
 

Online nctnico

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Re: > 1 GHz DIY differential probes
« Reply #132 on: November 01, 2019, 06:07:36 pm »
Hi ntcnico,

Any chance you have any probes left ?
This was an interesting thread. Why did it not survive longer ? Any spin-offs ?

// Per
Actually I have 20 new probes fresh from the assembler.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Evodad

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Re: > 1 GHz DIY differential probes
« Reply #133 on: November 03, 2019, 07:04:20 pm »
That was good news  :)

Any modifications since the last batch ?

May I buy 2 of you ?

)) Per
 


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