Technical data

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Using the 86100C

Eye/Mask Mode

Eye/Mask mode allows you to perform NRZ (Non-Return to Zero), or RZ

(Return to Zero) eye diagram measurements and eye mask tests. The eye dia-

gram is typically produced by triggering the instrument with a synchronous

clock signal.

Eye/Mask mode measurements only work when an eye diagram, and not a

pulse, is present on the screen. Measurements made on a pulse waveform

while in Eye/Mask mode will fail.

Use the Autoscale button to ensure that an optimum eye diagram is displayed,

which consists of a full display of the eye in addition to portions of the wave-

form preceding and following the eye.

The measurement toolbars provide measurements such as rise time, fall time,

jitter, and extinction ratio, as well as the mask test start and stop controls. Eye

measurement and mask test results appear below the display graticule.

To learn more about the Eye/Mask mode and switching from NRZ to RZ mea-

surement mode, consult the Help.

Figure 2-7. Eye/Mask Mode