BNC 670C - Timing

Model 670C Berkeley Nucleonics Corp. 58 of 96
Timing
• Sampling Clock[Hz]: specifies the Arbitrary Waveform Generator Sample Rate.
• Sampling Clock Source: specifies the clock source as Internal or External.
If Internal Clock is selected, the sampling clock is synthesized using a reference clock generated
internally.
If External is selected, the sampling clock is synthesized using the clock provided externally to
the Ref.Clock In SMA connector.
When the External is selected, the Reference Clock[Hz] control will appear and the user needs to
specify the Reference Clock frequency[Hz].
• Enable 2X Interpolation: this control enables or disables the 2X interpolation.
It enables a digital interpolation filter which generates extra data points and that moves the
image frequencies higher.
• CH1/CH2 Fine Skew – CH3/CH4 Fine Skew: the Fine Skew parameter sets a fine delay on the
couple of channels CH1/CH2 and CH3/CH4 depending on the instrument model.
The pair of channels will move simultaneously of the applied value.
The maximum allowed value is 1 clock cycle that depends on the current instrument sampling
rate and the resolution is about 3 ps.