Specifications

The graphics data sent to the digital monitor use transition minimized differential signaling (TMDS). TMDS

uses an encoding algorithm to convert bytes of graphics data into characters that are transition-minimized to

reduce EMI with copper cables and DC-balanced for transmission over fiber optic cables. The TMDS algorithm

also provides robust clock recovery for greater skew tolerance with longer cables or low-cost short cables. For

additional information about TMDS, see the references shown in Digital Visual Interface (page 68).

DVI to Video Adapter

The Power Mac G5 computer supports an optional DVI to S-video/composite adapter that provides S-video

and composite output to a PAL or NTSC video monitor or VCR. When a display is connected by way of the

video adapter, the computer detects the type of adapter and enables the composite and S-video outputs. The

settings for the resolutions and standards (NTSC or PAL) are then selectable in the System Preferences Displays

pane.

Note: The DVI to video adapter does not come packaged with the Power Mac G5 computer and

must be purchased separately.

The video output connector is a 7-pin S-video connector. Figure 3-9 (page 55) shows the arrangement of the

pins and Table 3-12 (page 55) shows the pin assignments on the composite out and S-video connector.

Figure 3-9 S-video connector

4 7

2 6 5

Table 3-12 Pin assignments for the S-video output connector

S-video output connectorPin number

Analog GND1

Analog GND2

Video Y (luminance)3

Video C (chroma)4

composite video5

Input and Output Devices

Video Monitor Ports