Specifications

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Chapter 3: Testing Performance
Test Pod 1 in the 800 Mb/s mode
width of the 8133A pulse generator so that the pulse width measured at 1
volt on the oscilloscope is equal to 750 ps minus the measurement
uncertainty and display resolution of the oscilloscope, further reduced by
35 ps for test margin.
If you are using the 54845A/B oscilloscope, the measurement uncertainty
is ±((0.007% * ∆t) + (full scale/2x memory depth) + 30 ps) ≅ ±30 ps. Add
5 ps for display resolution. Add 35 ps test margin.
750 ps - 30 ps - 5 ps - 35 ps = 680 ps. Set the pulse width as measured on
the 54845A/B oscilloscope to 680 ps.
In the oscilloscope horizontal setup, change the position to 450 ps. Change
the horizontal scale to 100 ps/div. This will make it easier for you to set the
pulse width accurately.
On the oscilloscope move the Ax and Bx markers to the crossing points of
the pulse and the horizontal center line. Read the pulse width at the
bottom of the oscilloscope display. It is displayed as “∆=”.
10 In the logic analyzer “Setup and Trigger...” window, select the Sampling
tab. In the “State Mode Controls” section, select the “800 Mb/s / 64M State”