Archive Compression Example: Bad Data
This example demonstrates that repeated bad values are not stored. Assume a large archive compression deadband, such as, 75%.
| Time | Value | Quality |
|---|---|---|
| t0 | 2 | Good |
| t0+5 | 2 | Bad |
| t0+10 | 2 | Bad |
| t0+15 | 2 | Bad |
| t0+20 | 2 | Good |
| t0+25 | 3 | Good |
- The t0+5 value is stored because of the change in data quality.
- The t0+10 value is not stored because repeated bad values are not stored.
- The t0+15 value is stored when the t0+20 comes in because of a change of quality.