Back when I worked for an Oscilloscope company, we were pretty proud of our differential probes. Even the “low-bandwidth” probes were still around 1GHz of bandwidth.
Daniel Kramnik built an active differential probe and looks like he is seeing about 400MHz usable bandwidth. And really, it looks relatively flat. Not bad for a DIY effort. I’m impressed.
Pretty amazing to think about the possibility of building your own (active) scope probes.
Fan of making things beep, blink and fly. Created AddOhms. Stream on Twitch. Video Host on element14 Presents and writing for Hackster.IO. Call sign KN6FGY.
| Cookie | Duration | Description |
|---|---|---|
| cookielawinfo-checkbox-advertisement | 1 year | Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category . |
| cookielawinfo-checkbox-analytics | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics". |
| cookielawinfo-checkbox-functional | 11 months | The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". |
| cookielawinfo-checkbox-necessary | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". |
| cookielawinfo-checkbox-others | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. |
| cookielawinfo-checkbox-performance | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance". |
| CookieLawInfoConsent | 1 year | Records the default button state of the corresponding category & the status of CCPA. It works only in coordination with the primary cookie. |
| viewed_cookie_policy | 11 months | The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data. |
| Cookie | Duration | Description |
|---|---|---|
| language | session | This cookie is used to store the language preference of the user. |
| Cookie | Duration | Description |
|---|---|---|
| _ga | 2 years | The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors. |
| _ga_LHR6J24XSY | 2 years | This cookie is installed by Google Analytics. |
| _gat_gtag_UA_42726312_1 | 1 minute | Set by Google to distinguish users. |
| _gid | 1 day | Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously. |
| browser_id | 5 years | This cookie is used for identifying the visitor browser on re-visit to the website. |
| CONSENT | 2 years | YouTube sets this cookie via embedded youtube-videos and registers anonymous statistical data. |
| Cookie | Duration | Description |
|---|---|---|
| VISITOR_INFO1_LIVE | 5 months 27 days | A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface. |
| YSC | session | YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages. |
| yt-remote-connected-devices | never | YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. |
| yt-remote-device-id | never | YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. |
| yt.innertube::nextId | never | This cookie, set by YouTube, registers a unique ID to store data on what videos from YouTube the user has seen. |
| yt.innertube::requests | never | This cookie, set by YouTube, registers a unique ID to store data on what videos from YouTube the user has seen. |
2 Comments
Hi, with your experience in probe design, is there any comment you would like to do for people who want to make it ? Is there anything easy that can be done to improve Daniel’s design ? It would be great if probe designer could help this project gets to 1Ghz … Thank you !!
I wasn’t directly involved in probe design, so I couldn’t offer specific tips. But when talking to the probe teams, it was a matter of mechanical and electrical black magic. Historically, designers would do an electrical design and then let the mechanical team figure out how to package it. We found both took hand-in-hand design.
1GHz was like the sound barrier. It takes a certain level of capability to get there.