See this Fast pulse circuit.

I ran across this thread that starts with,
  "Here is a simple pulse generator I have made for testing medium BW 
scopes' rise times.  It produces flat top signal with clean and fast 
rise and fall edges."

  He uses a MAX3949 Laser Driver to generate the signal.

  He started with 40 to 50 ps and got a little better each iteration. 
Also, has better connectors if you need them and some other mods.

It's not a toy, but priced well. Somewhere between $60 and $100.

  Here's the thread starting when people started receiving their pulsers 
and making scope measurements. The first few pages were just people 
placing orders before he started production.

> https://www.eevblog.com/forum/projects/yet-another-fast-edge-pulse-generator/75/

Don't be turned off by the eevblog, some high end developers commenting 
in this thread.

There is a Google sheet comparing dozens of different scopes and their BWs.

> https://docs.google.com/spreadsheets/d/1uknvUdL4gNuTyuK7MNAkCj95GFSsDtfgr7nObVppFiE/edit#gid=0

Here's a video from the thread, using the pulser to show bumps from Vias 
and square corners, I found it very interesting but useless to anything 
I do.

The pulser use starts here,

> https://youtu.be/STCGzanAyR0?t=631


That whole video starts here with a lot of high speed talk.
   Hmm, I guess you will need to move the cursor to the beginning I 
could get a link that didn't start at 11 minutes.



Here's a review video by The Signal Path, shows a 40ps Rise time on a 
13GHz Agilent Scope. It may have been better, I didn't understand some 
of what he said.

> https://youtu.be/T-G4OhWSyIo?t=142



            Mikek

On Sat, 4 Jan 2020 10:50:36 -0600, amdx <nojunk@knology.net> wrote:

>I ran across this thread that starts with,
>  "Here is a simple pulse generator I have made for testing medium BW 
>scopes' rise times.  It produces flat top signal with clean and fast 
>rise and fall edges."
>
>  He uses a MAX3949 Laser Driver to generate the signal.
>
>  He started with 40 to 50 ps and got a little better each iteration. 
>Also, has better connectors if you need them and some other mods.
>
>It's not a toy, but priced well. Somewhere between $60 and $100.
>
>  Here's the thread starting when people started receiving their pulsers 
>and making scope measurements. The first few pages were just people 
>placing orders before he started production.
>
>> https://www.eevblog.com/forum/projects/yet-another-fast-edge-pulse-generator/75/
>
>Don't be turned off by the eevblog, some high end developers commenting 
>in this thread.
>
>There is a Google sheet comparing dozens of different scopes and their BWs.
>
>> https://docs.google.com/spreadsheets/d/1uknvUdL4gNuTyuK7MNAkCj95GFSsDtfgr7nObVppFiE/edit#gid=0
>
>Here's a video from the thread, using the pulser to show bumps from Vias 
>and square corners, I found it very interesting but useless to anything 
>I do.
>
>The pulser use starts here,
>
>> https://youtu.be/STCGzanAyR0?t=631
>
>
>That whole video starts here with a lot of high speed talk.
>   Hmm, I guess you will need to move the cursor to the beginning I 
>could get a link that didn't start at 11 minutes.
>
>
>
>Here's a review video by The Signal Path, shows a 40ps Rise time on a 
>13GHz Agilent Scope. It may have been better, I didn't understand some 
>of what he said.
>
>> https://youtu.be/T-G4OhWSyIo?t=142
>
>
>
>            Mikek
>

We never buy Maxim.

SY88022AL is a nice little laser drver.




-- 

John Larkin         Highland Technology, Inc

lunatic fringe electronics 

On Saturday, January 4, 2020 at 2:45:55 PM UTC-6, jla...@highlandsniptechnology.com wrote:
> On Sat, 4 Jan 2020 10:50:36 -0600, amdx <nojunk@knology.net> wrote:
> 
> >I ran across this thread that starts with,
> >  "Here is a simple pulse generator I have made for testing medium BW 
> >scopes' rise times.  It produces flat top signal with clean and fast 
> >rise and fall edges."
> >
> >  He uses a MAX3949 Laser Driver to generate the signal.
> >
> >  He started with 40 to 50 ps and got a little better each iteration. 
> >Also, has better connectors if you need them and some other mods.
> >
> >It's not a toy, but priced well. Somewhere between $60 and $100.
> >
> >  Here's the thread starting when people started receiving their pulsers 
> >and making scope measurements. The first few pages were just people 
> >placing orders before he started production.
> >
> >> https://www.eevblog.com/forum/projects/yet-another-fast-edge-pulse-generator/75/
> >
> >Don't be turned off by the eevblog, some high end developers commenting 
> >in this thread.
> >
> >There is a Google sheet comparing dozens of different scopes and their BWs.
> >
> >> https://docs.google.com/spreadsheets/d/1uknvUdL4gNuTyuK7MNAkCj95GFSsDtfgr7nObVppFiE/edit#gid=0
> >
> >Here's a video from the thread, using the pulser to show bumps from Vias 
> >and square corners, I found it very interesting but useless to anything 
> >I do.
> >
> >The pulser use starts here,
> >
> >> https://youtu.be/STCGzanAyR0?t=631
> >
> >
> >That whole video starts here with a lot of high speed talk.
> >   Hmm, I guess you will need to move the cursor to the beginning I 
> >could get a link that didn't start at 11 minutes.
> >
> >
> >
> >Here's a review video by The Signal Path, shows a 40ps Rise time on a 
> >13GHz Agilent Scope. It may have been better, I didn't understand some 
> >of what he said.
> >
> >> https://youtu.be/T-G4OhWSyIo?t=142
> >
> >
> >
> >            Mikek
> >
> 
> We never buy Maxim.
> 
> SY88022AL is a nice little laser driver.
> 
> 
> 
> 
> -- 
> 
> John Larkin         Highland Technology, Inc
> 
> lunatic fringe electronics

I have heard many people for many years say don't buy Maxim.
 It would seem that would get back to Maxim and they would 
change there ways or go out of business. They are still in
business, have they changed their ways at all?
  Would the SY88022AL be any faster in his circuit?
 Is the price comparable?
Other than that did you find any thing fun?
 Did you like the very small ripple caused by the square corners in the 
Hackaday video?
                  Mikek

Am 04.01.20 um 22:05 schrieb amdx62@gmail.com:
> On Saturday, January 4, 2020 at 2:45:55 PM UTC-6, jla...@highlandsniptechnology.com wrote:

>>
>> We never buy Maxim.
>>
>> SY88022AL is a nice little laser driver.

> I have heard many people for many years say don't buy Maxim.
>   It would seem that would get back to Maxim and they would
> change there ways or go out of business. They are still in
> business, have they changed their ways at all?

I have done design work for at least two customers who
felt besieged by Maxim salesdroids. It helps enormously
if you have a _pilot_ production line with 300 people working
there. One of them did actually custom chips with Maxim,
medium size BGAs, and more than once.

cheers, Gerhard

p.s.
The German word Beuteschema does not seem to have an English
equivalent, i.e "the sum of attributes that make sth. interesting prey"

p.p.s.
I do have some LT1028 with Maxim logo. Weird.