| ??? 11/12/05 00:00 Read: times |
#103601 - Doubtful Responding to: ???'s previous message |
Neil Arora said:
Keypad check can also be done by displaying pressed key. Here, you assume that a human operator is present to press the key. for display(7-seg LED MUX) checking, we can illuminate each segment of particular digit and check wheather theres any short connection with other digit/segment or not? As you're assuming that a human operator is present, just have the processor light each segment individually in a known sequence. If there are any gaps, or if more than 1 segment ever illuminates simultaneously, the operator will know that there's a fault. The whole objective is to save/minimize manual testing time. Easy: do no field testing; Just do field replacement. Testing/fault-finding/repair can then be done at leisure in a properly equipped facility with appropriately-qualified staff, away from the customer's view. Ofcourse we need to make some assumptions like controller is working !! With a field-replacement strategy, you don't even need to assume that! |
| Topic | Author | Date |
| S/w for H/w Testing | 01/01/70 00:00 | |
| adc o/p checking | 01/01/70 00:00 | |
| Nothing special | 01/01/70 00:00 | |
| what are you making? If it is not extrem | 01/01/70 00:00 | |
| Waste of time? | 01/01/70 00:00 | |
| Doubtful | 01/01/70 00:00 | |
| Purpose of this... | 01/01/70 00:00 | |
| just replace the darn thing | 01/01/70 00:00 | |
| not everything can be replaced | 01/01/70 00:00 | |
| I could possibly support that were it no | 01/01/70 00:00 | |
design for the application | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 |