Agilent Technologies DisplayPort Instrukcja Użytkownika Pobierz pdf (Strona 16)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 16 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

c. In the oscilloscope, using the Analysis > Serial Data > Clock Recovery menu, change the

clock recovery from 2nd Order PLL to Constant Frequency.

Figure 9: Constant Frequency CDR for RJ and SJ Calibration

d. Alternate between adjusting RJ on the J-BERT N4903B user interface and press the Single

Acquisition Button on the Oscilloscope until the RJ is calibrated to the following values.

For RBR

For HBR

For HBR2

Adjust RJ to 8.1mUI RMS

Repeat measurement at least 3

times and average the results.

Adjust RJ to 13.5mUI RMS

Repeat measurement at least 3

times and average the results.

Adjust RJ to 16.7mUI RMS,

200mUI Pk-Pk (16.7 RMS x

12.0)

Repeat measurement at least 3

times and average the results.

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Agilent Technologies DisplayPort Instrukcja Użytkownika Strona 16