| ??? 07/22/09 15:13 Read: times |
#167700 - Oscillator candidate Responding to: ???'s previous message |
I've successfully used these in the past:
http://nl.farnell.com/iqd-frequ...dp/1100747 Just out of curiosity, I just fired one of those units up after about three years or so and after initial warmup (just a minute or so) it shows a deviation of only 0.25 ppm! |
| Topic | Author | Date |
| Frequency Counter using prescaler | 01/01/70 00:00 | |
| Find prescaler. Then find time period. Then multiply count. | 01/01/70 00:00 | |
| Think about crystal stability | 01/01/70 00:00 | |
| Oscillator candidate | 01/01/70 00:00 | |
| i wish that would become clear to the majority | 01/01/70 00:00 | |
| 0.1 % | 01/01/70 00:00 | |
| I'm sorry? | 01/01/70 00:00 | |
| i'm sorry | 01/01/70 00:00 | |
| Clearer now | 01/01/70 00:00 | |
| Dividers increase the error, but... | 01/01/70 00:00 | |
| if extreme precision is required ... | 01/01/70 00:00 | |
| or count more seconds | 01/01/70 00:00 | |
| Remember resolution != precision :) | 01/01/70 00:00 | |
Excellent - responses thanks so much | 01/01/70 00:00 |