Chapter 5 How to Operate BERT
5-22
5.2.9 Setting ED Measurement Condition
To set how to measure bit error:
Set Gating Cycle at Gating.
Single: Performs measurement until the time set at the
measurement period is exceeded.
Repeat: Performs measurement until ER Result button display
becomes Stop.
The bit error rate returns to 0 at each measurement
period.
Untimed: Performs measurement until ER Result button display
becomes Stop. The bit errors are accumulated.
The following figure shows the relationship between the Gating Cycle
setting and the change in the displayed bit error count.
Figure 5.2.9-1 Gating Cycle Settings and Bit Error Count
Bit error measurement Period
The Gating Period can be set when Gating Cycle is Single or Repeat.
The time can be set from 1 second to 9 days 23 hours 59 minutes 59
seconds.
Time
Time
Time
Set button to Stop
Single
Repeat
Untimed
Bit error count
0
0
0
Measurement
period
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