| 摘要 |
A data receiver comprises a plurality of controllable circuit blocks, each circuit block responsive to a control parameter, and an optimiser 100 to optimise in turn each parameter of the circuit blocks for a period during which the other parameters are held constant. The parameters may include an amount of equalisation applied to an analogue data waveform, a data sampling phase, a sampling reference level and an amount of gain applied to an analogue waveform by an amplifier. The parameter optimisation may be based on measures of an eye height of a data waveform in the receiver. The optimisation process may comprise establishing a plurality of parameter test points having different values, measuring the responses of the receiver (the eye height) in response to the values, comparing the responses and then updating the test points. The process is repeated using the updated test points (see figures 7 and 8). |
