User guide

• The DER is the current DER, calculated upon a period of 200ms.
• The AccumDER shows either the accumulated DER of the current
accumulation, or if no accumulation is running, the results of the most recent
accumulation.
This enables you to monitor real-time DER behavior as you do things such as to
manually adjust the sampling point, to add errors, or to make adjustments to your
device.
Click this button to toggle between DER or AccumDER results.
This area displays the actual illegal disparity change count or cumulative illegal
disparity change count.
ISR Results Window
This window displays the actual (ISR) or cumulative (AccumISR) ISR results:
Evaluating Results 7
Agilent J-BERT N4903B High-Performance Serial BERT 371
Accumulated/Actual Button
Error Count/Accum Error Count