Agilent Technologies DisplayPort Uživatelský manuál stáhnout pdf (Strana 26)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 26 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

Note: Crosstalk is highly dependent on the Receptacle fixture used.

b. Alternate between adjusting the Vamp 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 value.

For RBR

For HBR

For HBR2

Adjust the Clock/Trigger Vamp

Height measurement on the

Scope is 90mV

diff

+/-10%

Repeat measurement at least 5

times and average the results.

Figure 25: HBR2 Eye Height Measurement with crosstalk

2. At TP3, disconnect ‘P’ (Plug) type adapter from the ‘R’ (Receptacle) calibration adapter and connect

the ‘P’ type adapter to the DUT for testing (Figure 4-4).

a. At TP3, disconnect ‘P’ (Plug) type adapter from the ‘R’ (Receptacle) calibration adapter and

connect the ‘P’ type adapter to the DUT for testing (Figure 4-4).

b. Disconnect the Plug fixture from the calibration Receptacle fixture for the test. Refer to the

Testing the DUT section below.

Note: Always calibrate for a four lane configuration even if the device under test is a

single lane or two lane device. Perform the testing with aggressor signals applied on all

lanes independent of the actual device configuration.

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Agilent Technologies DisplayPort Uživatelský manuál Strana 26