2:8 d Distribution Amplifier Model # EXT-HDMI-248 USER MANUAL www.gefen.
ASKING FOR ASSISTANCE Technical Support: Telephone Fax (818) 772-9100 (800) 545-6900 (818) 772-9120 Technical Support Hours: 8:00 AM to 5:00 PM Monday through Friday. Write To: Gefen Inc. c/o Customer Service 20600 Nordhoff Street Chatsworth, CA 91311 www.gefen.com support@gefen.com Notice Gefen Inc. reserves the right to make changes in the hardware, packaging and any accompanying documentation without prior written notice. 2:8 HDMI Distribution Amplifier is a trademark of Gefen Inc.
TABLE OF CONTENTS 1 Introduction / Operation Notes 2 Features 3 Panel Descriptions 4 Connecting and Operating the 2:8 HDMI Distribution Amplifier 5 RMT-2 Installation 6 IR Code Configuration 7 EDID Management Feature 8 EDID Management Modes 9 RS-232 Serial Communication 10 RS-232 Serial Communication Commands 11 Rack Ears Installation Diagram 12 Wiring Diagram 13 Specifications 14 Warranty
INTRODUCTION The Gefen 2:8 HDMI Distribution Amplifier is the perfect solution for anyone who needs to send one or two sources of digital high definition video to multiple displays at the same time. It supports HDMI equipment, such as DVD players, satellite set top boxes, and HDMI displays. In operation, the digital source is connected to the distribution amplifier’s input while eight HDMI outputs are available to be used in part or in full.
FEATURES Features • Switch easily between any two HDMI/DVI sources • Outputs are mirrored to eight HDMI/DVI* displays simultaneously • Supports resolutions up to 1080p, 2K and 1920 x 1200 • Extends the range of HDMI compliant devices by equalizing and re-clocking the HDMI signal • HDMI/HDCP compliant Includes: (1) 2:8 HDMI Distribution Amplifier (1) 6’ HDMI cable (M-M) (1) 24V DC Power Supply (1) RMT2-IR remote (1) Set of Rack Ears (1) Users Manual 2
HDMI Input 1 HDMI Input2 Input LED Indicator 3 Back Panel IR Eye IR Extension Port HDMI Output HDMI Output HDMI Output HDMI Output 8 4 6 8 HDMI Output HDMI Output HDMI Output HDMI Output 1* 3 5 7 RJ-11 To RS-232 Serial Port Front Panel 24V DC Power Input Power LED Indicator PANEL DESCRIPTIONS
CONNECTING THE 2:8 HDMI DISTRIBUTION AMPLIFIER How to Connect the 2:8 HDMI Distribution Amplifier 1. Connect the supplied cable from the HDMI source into the HDMI input port 1 of the 2:8 HDMI Distribution Amplifier. 2. Connect a second HDMI source to HDMI input port 2 on the 2:8 HDMI Distribution Amplifier using a user supplied HDMI cable. 3. Connect the display(s) (up to eight) to the HDMI output port(s) of the 2:8 HDMI Distribution Amplifier using user supplied cable(s) 4.
RMT2-IR INSTALLATION 1. Remove battery cover from the back of the RMT2-IR remote. 2. Verify that dip switches 1 & 2 are in the down (OFF) position. (See page 6) 3. Insert the battery, hold the battery so that you can see the positive side facing up. The side that is not marked must be facing down. 4. Test the RMT2-IR remote by pressing ONLY one button at a time. The indicator light on the remote will flash once each time you press a button.
IR CODE CONFIGURATION Why would I need to change the remote channel? In some instances, the 2:8 Distribution Amplifier for HDMI may use IR codes that conflict with other IR remote control devices. The unit may switch inputs when another brand IR remote control is used or the RMT-2IR may cause other brand IR controlled devices to behave unexpectedly. I am experiencing the issues listed above.
EDID MANAGEMENT FEATURE EDID. What is it and what is it used for? Under normal circumstances, an source device (digital and analog) will require information about a connected device/display to assess what resolutions and features are available. The source can then cater its output to send only resolutions and features that are compatible with the attached device/ display.
EDID MANAGEMENT MODES EDID Modes The diagram below illustrates the 8 DIP switch bank. 1 2 3 4 5 6 7 DIP SWITCH Function 1 EDID Mode 2 EDID Mode 3 IR Channel 4 IR Channel 5 EDID Mode 6 N/A 7 EDID Mode 8 N/A 8 Use DIP switches 1, 2, 5, and 7 to select the desired EDID management mode. EDID Mode 0 (Switch 1=OFF Switch2=OFF Switch5=ON) • Edid is copied from the device connected to the first active hdmi output port. • All features newer that HDMI 1.2 are cleared.
RS-232 SERIAL COMMUNICATION What features are available via the RS-232 serial communications port? The 2:8 Distribution Amplifier for HDMI can accept commands through the RS232 serial communications port located on the rear panel. The current RS-232 control features are: • Switching/routing of inputs to outputs without the RMT-2IR remote control. • Switch EDID management modes without opening the unit to physically modify DIP switches.
RS-232 SERIAL COMMUNICATION COMMANDS Switching/Routing Binary Table ASCII RMT2-IR Button 1 2 1 2 Binary 0011 0001 0011 0010 EDID Management Modes All DIP switches inside the unit must be in their default OFF position. Use the ASCII commands below to change the EDID modes. For a description of each mode please see page 8. ASCII EDID Mode m0 0 m1 1 m2 2 m3 3 m4 4 m5 5 m6 6 m7 7 IR Remote Channel Configuration All DIP switches inside the unit must be in their default OFF position.
RACK EARS INSTALLATION DIAGRAM Rack mount ears are provided for installation of this unit into a 1U rack mount space. 1. 2. 3. 4. Locate the side screws on the unit. Remove the front 2 screws that are located closest to the front of the unit. Using the removed screws, screw the rack mounting bracket into the unit. Repeat the procedure on the opposite side of the unit.
12 HDMI cable maximum distance is 15 ft at 1080p resolution without a EXT-HDMI-141SBP or EXT-HDMI-CAT5-MS HDMI WIRING DIAGRAM
SPECIFICATIONS Video Amplifier Bandwidth ............................................................................ 165 MHz Input Video Signal ................................................................................... 1.2 Volts p-p Input DDC Signal .............................................................................. 5 Volts p-p (TTL) Single Link Range ........................................................................1080p / 1920 x 1200 Input Connector Type .......................
