| ??? 10/27/09 11:53 Read: times |
#170095 - Look up TDR Responding to: ???'s previous message |
Time domain reflectometry?
eg http://en.wikipedia.org/wiki/Time-domain_reflectometer Other ways Can you measure the cable impedance , DC resistance? Google cable impedance and cable resistance. Can you get access to both ends of the cable? NOTE These are "real world" measurements... and you will probably need a 80c51 and a good ADC. You should work out your theories (prove them) 1st before starting any design hardware. Joe |
| Topic | Author | Date |
| How to measure cable length (RJ45) using 8051? | 01/01/70 00:00 | |
| Some motivating questions... | 01/01/70 00:00 | |
| Hints | 01/01/70 00:00 | |
| Look up TDR | 01/01/70 00:00 | |
| maybe | 01/01/70 00:00 | |
| Right now... | 01/01/70 00:00 | |
| Some Ideas | 01/01/70 00:00 | |
| not practical with a '51, but with a scope | 01/01/70 00:00 | |
| Great progress | 01/01/70 00:00 | |
| We'll see... | 01/01/70 00:00 | |
| End goal is important when selecting method | 01/01/70 00:00 | |
| use pulse method | 01/01/70 00:00 | |
yeah TDR? | 01/01/70 00:00 |