Sample Period Field (Timing Only); Samples/Clock Field(State Only) - Agilent Technologies 16517A User Reference

4-gsa/s timing and 1-gsa/s synchronous state logic analyzer
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The Trigger Menu

Sample Period Field (Timing only)

Sample Period Field (Timing only)
The Sample Period field is used to set the time period between data samples.
Every time a new sample is taken, the analyzer will see updated
measurement data.
In full-channel mode, the sample period is configurable. A list of choices
appear when the field is selected. In half-channel mode, the analyzer
automatically runs at a 250 ps sample period, and is not adjustable.
Measured Waveform
Sample Period
Sampling

Samples/Clock Field(State only)

The Samples/Clock field sets the number of extra sample points
(oversampling) between the external clock edges. All oversampled points
are evenly distributed within the period of the external clock. When the data
is displayed in the state listing, all sampled points are shown by default.
Oversampling is set in powers of two, up to a maximum of 32, or a sample
rate not exceeding 2 GSa/s. The equation below illustrates how the
maximum sample rate is limited.
The external clock rate is checked at each run. If at any time the rate of
oversampling exceeds a 2 GHz rate, a lower Samples/Clock setting is
automatically chosen.
4–34
H
L
Sample 1
Sample 2
Sample 3
(external clock rate) × (oversampled setting) ≤ 2 GHz
H
H
L
Sample 4
Sample 5

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