Agilent Technologies DisplayPort Manuale Utente Scaricare il pdf (Pagina 24)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 24 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

Figure 21: J-BERT N4903B Differential Amplitude Adjustment

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

Clock Recovery from Constant Frequency to 2

Order PLL.

Figure 22: DSA 2

Order PLL Clock Recovery

c. On the Oscilloscope, Select Measure > Eye > Eye Height Measurement.

d. Alternate between adjusting the Vampl on the J-BERT N4903B user interface and pressing

the Single Acquisition Button on the Oscilloscope until the Eye Height is calibrated to the

following values.

For RBR

For HBR

For HBR2

Adjust Eye Height to

46mV

diff

+/-10%

Repeat measurement at least 5

times and average the results.

See C appendix

Adjust Eye Height to 150mV

diff

+/-10%

Repeat measurement at least 5

times and average the results.

Adjust Eye Height to 120mV

diffI

+/-10% as shown in the below

example

Repeat measurement at least 5

times and average the results.

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 55 56

Nessun commento

Agilent Technologies DisplayPort Manuale Utente Pagina 24