Gefen SDI-2-DVI User Manual

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accompanying documentation without prior written notice.

The SDI to DVI Adapter is a trademark of Gefen Inc.

© 2003 Gefen Inc., All Rights Reserved

Notice

TABLE OF CONTENTS

1

Introduction

2

Operation Notes

3

The SDI to DVI Adapter Supported Output Resolution

4

Infrared Remote Functions

5

RS422 Port

6

Wiring of the RS422-RS232 Cable

7

Recommended LCD Monitors

8

The SDI to DVI Adapter Firmware Update Procedure

9

Specications

10

Warranty

INTRODUCTION

Description

the SDI to DVI Adapter is a compact digital video interface that converts serial digital video
(SDI and HDSDI) to DVI (digital RGB). It automatically detects the input scan rate and
supports a wide variety of video formats including PAL, NTSC, 720p, 1080p and 1080i.

The SDI to DVI Adapter can be connected to computer LCD monitors, HDTV Televisions
with DVI input, video projectors and displays (Plasma, DLP, D-ILA etc.). It supports both
DVI-HDTV Televisions (no scaling) and DVI-LCD monitors (automatic scaling).

CONTENTS

The SDI to DVI Adapter consists of:

--- (1) SDI to DVI Adapter

--- (1) 12VDC Power Supply

--- (1) User Manual

1

OPERATION NOTES

On power up, the SDI to DVI Adapter will automatically detect the input format of the
SDI video and will send a message to the monitor connected via DVI requesting its
EDID. The EDID parameters of the connected monitor will be used by the SDI to DVI
Adapter to determine its output resolution.

The SDI to DVI Adapter can operate in two modes. Auto Mode (default) and Pass
Through Mode. In all output modes, the SDI to DVI Adapter will always keep the aspect
ratio of the input. If you notice a change in the aspect ratio, it would be caused by the
monitor and not by the SDI to DVI Adapter. Both output modes are described in detail
below.

Auto Mode

1. EDID reports 1024x768, 1280x720, 1280x768, 1280x800 or 1280x1024: In this case,
the output of the SDI to DVI Adapter will be set to match the resolution reported by EDID

2. EDID reports 1920x1200: The output will be set to 1280x800

3. EDID reports 1920x540 (common for HDTV): The output will be set to 1280x720

4. EDID reports none of the above resolutions: The output will be set to 1280x1024

5. EDID message not received (some special cables): The output will be set to
1280x1024

The SDI to DVI Adapter output can be forced out of Auto mode to a specic resolution
using the “1” button on a Sony infrared remote control. Pressing the “1” button will jump
through the following modes of operation:

Pass Through Mode

This mode can be invoked by pressing the RECALL or JUMP button on a standard Sony
infrared remote control. This mode is only available when the input format is: 1080p (24/
25/30), 1080i (48/50/60) and 720p (60). Using this mode for a PAL input will switch to
50Hz for NTSC there will be no effect.

In Pass Through Mode, the SDI to DVI Adapter-10 will output an the SDI to DVI Adapter
signal at the same resolution as the input format. For example, if the input is 1080i, the
DVI output will be set to 1920x540.

The advantages of Pass Through mode are:

1. No Delay: Since the SDI to DVI Adapter-10 does not perform any scaling the
conversion delay is minimal. When the SDI to DVI Adapter scales, the delay is 1 frame.

2. Pixel to Pixel: On monitors that have a resolution above 1920x1080 and support
1920x1080 HD formats, the input can be viewed pixel to pixel without any scaling.

2