| ??? 07/03/08 13:58 Read: times |
#156384 - terminate with the "characteristic impedance" and Responding to: ???'s previous message |
terminate with the "characteristic impedance" and you will be fine.
The datasheet for the "special military grade shielded cable" will have the characteristic impedance. The 485 drivers are made to drive less than 50 ohms, so a bit of cable capacitance should not hurt any. The above with two assumptions 1) only two nodes 2) two wires inside the shield used for 485 Erik |
| Topic | Author | Date |
| RS485 on straight wires? | 01/01/70 00:00 | |
| terminate with the "characteristic impedance" and | 01/01/70 00:00 | |
| Possible | 01/01/70 00:00 | |
| No so good | 01/01/70 00:00 | |
| The idea of pairing and twisting... | 01/01/70 00:00 | |
| Telephone Cable... | 01/01/70 00:00 | |
| If not straight wires | 01/01/70 00:00 | |
| sorry Per | 01/01/70 00:00 | |
| it's okay | 01/01/70 00:00 | |
| We use Cat-5 cables... | 01/01/70 00:00 | |
| ESD | 01/01/70 00:00 | |
| Which end? | 01/01/70 00:00 | |
| If ... | 01/01/70 00:00 | |
485/422/profibus | 01/01/70 00:00 | |
| 485 cable | 01/01/70 00:00 |