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TMDS

Driver

0 V or 3.6 V

50 W

50 W

_

+

IOS

50%

VOL

tsk(D)

VY

VZ

VOH

Data +

Data -

Clk+

Clk-

VideoPatterm

Generator

1000 mVpp

Differential

Coax

Coax

Coax

Coax

Coax

Coax

Coax

Coax

<2" 50

TransmissionLine

TMDS250

RX

+

EQ

M

U

X

OUT

RX

+

EQ

M

U

X

OUT

<2" 50

TransmissionLine

<2" 50

TransmissionLine

<2" 50

TransmissionLine

SMA

SMA

SMA

SMA

SMA

SMA

SMA

SMA

AVcc

RT

RT

AVcc

RT

RT

Jitter Test

Instrument

Jitter Test

Instrument

TP3

TP2

TP1

HDMICables

TMDS250

SLLS866 – AUGUST 2007

PARAMETER MEASUREMENT INFORMATION (continued)

Figure 3. Short Circuit Output Current Test Circuit

Figure 4. Definition of Intra-Pair Differential Skew

A.

HDMI 1.3 compliant cable when EQ = Low, and 10m 28AWG input cable when EQ = High.

B.

All jitters are measured in BER of 10-9

C.

The residual jitter reflects the total jitter measured at the output of the DUT, TP3, subtract the total jitter from the

signal generator, TP1

Figure 5. Jitter Test Circuit

Copyright © 2007, Texas Instruments Incorporated

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