Leader LV5300A - Page 415

17. Eye Pattern Display (LV5300/LV5300A/LV7300-SER02)
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• Unit interval
This unit uses unit intervals (UI) as jitter measurement units.
One cycle of the eye pattern is 1 UI. The time that corresponds to 1 UI varies depending on
the input signal, as shown below.
Table 17-2 Time that corresponds to 1 UI
Input Signal
Bit Rate
Time That Corresponds to 1 UI
3G
2.970/1.001 Gbps
337.0 ps
2.970 Gbps
336.7 ps
HD
1.485/1.001 Gbps
674.1 ps
1.485 Gbps
673.4 ps
SD
270 Mbps
3.7 ns
Figure 17-5 Unit interval
• Histogram display
The histogram is superimposed on the eye pattern display and shows amplitude information
of the eye pattern waveform, such as the amount of eye opening, amplitude position,
superimposed noise, rising edge overshoot (Or), and falling edge overshoot (Of).