Teledyne LeCroy QPHY-MOST150 - Manual (Page 21)

QPHY-MOST150o Software Option
920456 Rev B
21
Additional tests performed at SP1
Check Bitrate 1.1
The actual bitrate of the signal is measured and the deviation from the nominal value is compared to
the specification.
Figure 14 - Check Bitrate Results
Additional tests performed at SP2
Dark level and Extinction Ratio 2.1
The dark level of the O/E converter is measured and used to calculate the extinction ratio. To
measure the dark level, remove the POF-fibre from the O/E-converter. Shade the input of the O/E-
converter and press the “OK” button. Skipping the measurement of the dark level is allowed but will
result in a failure of the extinction ratio test.
Figure 15 - Dark Level and Extinction Ratio Results