Timeline for How to measure the actual length of a long twisted pair?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 21, 2020 at 18:08 | answer | added | FredW | timeline score: 1 | |
| Nov 27, 2019 at 20:36 | vote | accept | user16307 | ||
| Nov 14, 2019 at 5:02 | comment | added | joribama | @Shadetheartist - I had noticed (and up-voted) already. That's exactly what I had in mind :) | |
| Nov 14, 2019 at 0:01 | history | tweeted | twitter.com/StackElectronix/status/1194767148486418434 | ||
| Nov 13, 2019 at 22:58 | comment | added | Shadetheartist | @joribama I have submitted a geometric math themed answer that you might find interesting. | |
| Nov 13, 2019 at 0:14 | answer | added | Shadetheartist | timeline score: 5 | |
| Nov 12, 2019 at 15:15 | answer | added | JRobert | timeline score: 3 | |
| Nov 12, 2019 at 6:14 | comment | added | joribama | That's a very good question. I'm wondering whether we can get a good estimate by measuring the twisting pitch and the individual wire insulator external diameter. If you are the one actually twisting the wires, a practical solution is to simply measure the length before and after the twist and come up with a fraction. If you're buying an already twisted cable, you could do the opposite and untwist a small segment of the cable. | |
| Nov 11, 2019 at 22:25 | comment | added | Captainj2001 | Time domain reflectometry is a technique where you send a short pulse and measure the travel time to the open terminated end of the cable and back to the source. Half of this time is your effective cable "length". | |
| Nov 11, 2019 at 18:49 | comment | added | Chris Stratton | What method you chose should take into consideration why you need the answer. Don't forget obvious things like looking at building plans. | |
| Nov 11, 2019 at 18:07 | answer | added | Stefan Wyss | timeline score: 2 | |
| Nov 11, 2019 at 13:23 | comment | added | analogsystemsrf | loosely twisted wires will not be "as long" as tightly twisted pairs. I've seen this effect in using a drill to create tight twists, and during the drill's rotation the wire is continually CONTRACTING. | |
| Nov 11, 2019 at 12:39 | comment | added | Andy aka | If you want to determine volt drop then measure the loop resistance. | |
| Nov 11, 2019 at 12:31 | history | asked | user16307 | CC BY-SA 4.0 |