User manual

55 Chapter 3
3.10 Frequency Control
Figure 3.15: Frequency Control screen
3.10.1 Spread Spectrum
Use this function to tune the PCI clock frequency. Setting this option to
Disabled will limit the clock signal spread, increase the consistency of the
frequency, but increase the EMI. Setting this option to Enabled will
decrease the EMI.
To enable/disable the spread spectrum. The choices are: "Disabled,"
"-0.40%," "- 0.50%," "- 0.60%," and "- 1.00%".