Agilent Technologies DisplayPort Instrukcja Użytkownika Pobierz pdf (Strona 54)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 54 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

Figure 56: Align Error Detector and Start/Stop Error Counter

g. Switch to Accumulated Results and note the recorded BER.

Figure 57: Accumulated Results for N4916B / N4903B Timing Adjustment

h. Repeat steps c to g for all 6 input timing settings.

i. One or two input timing settings will show a BER>0. Choose the input timing setting which

is the furthest away from the failing input timing settings, e.g. 2 failed choose 5.

Note: If a J-BERT generator only option (-G07 or –G13) is used. Set data rate to HBR2

data rate and change to the HBR2 pattern sequence including the compliance pattern.

Use an HBR2 capable receiver with its built-in error counter for the accumulated ber

measurement for timing settings 1 to 6.

Channel Add of Data Out and Aux Data Out

Figure 58: De-emphasized Signals by Channel Add of Data Out and Aux Data Out

Combine Aux Data Out and Data Out as shown above and activate de-emphasis mode for aux data output.

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Agilent Technologies DisplayPort Instrukcja Użytkownika Strona 54