| ??? 08/09/05 14:05 Read: times |
#99049 - OK then check max232 Responding to: ???'s previous message |
You should get an oscilloscope at this stage and check what you see on the MAX. Just a few thoughts:
- is it a MAX232? - what capacitors are you using (if electrolytics, check polarity according to datasheet) - it can still be bad ground problem on you board... Oh you've surely checked the pump's voltages, haven't you? Just to be sure, could you try an another cable? I have seen cables which tested OK but when slightly bent or stretched, they were intermittent. Jan Waclawek |
| Topic | Author | Date |
| max232 loopback | 01/01/70 00:00 | |
| where do you set speed/parity/etc. | 01/01/70 00:00 | |
| RE: where do you set speed/parity/etc. | 01/01/70 00:00 | |
| Should be irrelevant... | 01/01/70 00:00 | |
| Maybe not helpful but | 01/01/70 00:00 | |
| Loopback | 01/01/70 00:00 | |
| RE: loopback | 01/01/70 00:00 | |
| OK then check max232 | 01/01/70 00:00 | |
| clarification please | 01/01/70 00:00 | |
| RE:clarification please | 01/01/70 00:00 | |
| Scope/. | 01/01/70 00:00 | |
| RE: Scope/. | 01/01/70 00:00 | |
| Tricky. | 01/01/70 00:00 | |
| RE: Tricky. | 01/01/70 00:00 | |
| Scopes | 01/01/70 00:00 | |
| Steve please qualify | 01/01/70 00:00 | |
| Logic Probe | 01/01/70 00:00 | |
| I misunderstood your post, I see you are | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
| with a DMM | 01/01/70 00:00 | |
| Is your problem solved ? | 01/01/70 00:00 | |
| thanks for your help-i found the problem | 01/01/70 00:00 | |
three ? | 01/01/70 00:00 |