YOKOGAWA TA220 User Manual page 61

Digital jitter meter
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5.1 Meter Display
5-2
Note
The shortest period of jitter than can be measured by the instrument is 50 ms (or 2 ms
when D-to-C high speed calculation is ON). The meter needle may not respond to all
changes in the measured value.
If the jitter or jitter ratio exceeds the maximum value of each scale, the meter needle goes
beyond the scale line that indicates the maximum value of each scale.
If the trigger is not activated on the input signal and measurements cannot be made, the
meter needle goes off the scale beyond the scale line that indicates the maximum value of
each scale.
If the clock cannot be regenerated by the PLL circuit during D-To-C measurement (unLoC
is displayed on Display 1), the meter needle goes beyond the scale line that indicates the
maximum value of each scale. The jitter ratio output and determination output (see
section 7.1) are 5 V and 0 V respectively.
IM 704610-01E

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