Agilent Technologies DisplayPort Uživatelský manuál stáhnout pdf (Strana 29)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 29 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

B. Appendix: Agilent 90000A/X/Q Setup Steps for Sink Calibration

ISI Channel Scope Setup

The following procedure shows the Step-Step procedure for achieving the measurement results in this

MOI for Sink Calibration.

1. Setup the Physical Connection for ISI as documented in 9.1 of the Calibration Procedure.

Note: The physical ISI channel changes between the bit rates supported but the general

measurement procedure is the same. This Step-Step is for HBR2, but highlights what is

different when calibrating HBR and RBR.

Initial Scope Setup

1. Press Default Setup on the Front Panel to start from a known instrument state.

2. Press Front Panel Auto Scale

3. Verify signals are symmetric on screen, set vertical to best sensitivity to make sure signals are

using as much of the A/Ds range as possible without clipping. If the signal is not symmetric and

looks similar to the following screenshot, check your connections until the live signal is

symmetric.

Figure 27: Single Ended HBR2 TP3 Signals

4. In the Channel Setup, menu, select Differential Channels 1&3

5. Turn Off the Blue trace, Channel (3+1).

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Agilent Technologies DisplayPort Uživatelský manuál Strana 29