Patent ID: 8462887

Claim:
A method of converting an analog signal to a digital signal, the method comprising: receiving an analog signal corresponding to a selected channel; selecting a sample clock frequency from a plurality of different sample clock frequencies, the plurality of different sample clock frequencies being integer divisions of a master clock signal; determining whether a sample clock signal, generated with the selected sample clock frequency, has overtones outside of a predetermined bandwidth that includes a frequency of the selected channel; if the sample clock signal has overtones outside of the predetermined bandwidth, converting, with a converter circuit, the analog signal to a digital signal at a conversion rate based on the sample clock signal; and if the sample clock signal has overtones inside of the predetermined bandwidth, selecting another sample clock frequency from the plurality of different sample clock frequencies and converting the analog signal to the digital signal at a conversion rate based on the another sample clock signal, the another sample clock signal being generated with the another sample clock frequency, where the conversion rate based on the sample clock signal is the same as the conversion rate based on the another sample clock frequency.