Agilent Technologies DisplayPort Instrukcja Użytkownika Pobierz pdf (Strona 9)

Agilent Technologies, Inc.

DisplayPort Test Implementation Group 9 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2

Sink Jitter Tolerance Test (4.1)

6 Pre-test Procedures:

Prior to making any measurements, the following steps must be taken to assure accurate measurements:

Allow a minimum of 45 minutes warm-up time for oscilloscope and J-BERT N4903B

Ensure the oscilloscope and skew is calibrated per Agilent’s user documentation on calibration.

Make sure you use a torque wrench with the proper torque specification to make all SMA connections.

7 Test Objective

The DisplayPort PHY CTS 1.2b Section 4 outlines the requirements for Sink testing.

8 Test Conditions

Refer to Section 4.1.3 of the PHYCTS 1.2b for the verbose details of the test conditions. Table 1 below is

a summary of these conditions for each data rate.

Stressed Eye

Parameter

RBR

HBR

HBR2

Transition Time

Converter (TTC) Value

for Main Link Stressed

Signal

The value of the transition time converter used for the main link depends on

the channel + TTC combination used to achieve the required compliance

interconnect channel ISI, see 9.1.

Transition time for

crosstalk signals,

measured at TP3

150ps (10% to 90%)

>50ps (10% to 90%)

Bit Rate

1.62Gb/s

2.7Gb/s

5.4Gb/s

Calibration Test Point

TP3

TP3_Eq

Test Signal Pattern

127 Bit PRBS7

CP2520

(PHY1.2Bb CTS

Appendix A Pattern 1)

Compliance

Interconnect Channel

(CIC) ISI

570mUI +/-5%

at TP3

(use N4915A-006)

161mUI +/-5%

at TP3_EQ

(use JBERT-B Opt.

J20)

220mUI +/-5%

at TP3_EQ

(use JBERT-B Opt.

J20)

RJ (RMS)

8.1mUI

13.5mUI

16.7mUI

FIXED

@ 200MHz

100mUI

SWEEP

Approximate

2MHz

10MHz

20MHz

981mUI

111mUI

80mUI

904mUI

225mUI

182mUI

505mUI

116mUI

104mUI

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 55 56

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