
Contents 
Contents 
1  Introduction  1 
2  Getting Started  1 
2.1  Quick Start  2 
2.2  Achieving the Best Performance  3 
2.3  Safety Instructions  3 
2.4  Recycling Kramer Products  3 
3  Overview  4 
4  Your VS-21H-IR 2x1 HDMI Switcher  5 
5  Connecting the VS-21H-IR 2x1 HDMI Switcher  6 
5.1  Using the Remote Control Transmitter  7 
6  Operating the VS-21H-IR 2x1 HDMI Switcher  7 
6.1  Working in the PC Mode  7 
6.1.1  Acquiring / Changing the EDID  7 
6.1.2  Resetting to the Default EDID  8 
6.2  Working in the DVD Mode  8 
6.2.1  Toggling from the DVD mode to the PC mode  8 
6.2.2  Toggling from the PC mode to the DVD mode  8 
6.3  VS-21H-IR Factory Reset Procedure  9 
7  Technical Specifications  9 
Figures
UFigure 1: VS-21H-IR 2x1 HDMI SwitcherU  5  
UFigure 2: Connecting a VS-21H-IR 2x1 HDMI SwitcherU  6 
Tables 
UTable 1: VS-21H-IR 2x1 HDMI Switcher (Top Side Panel) FeaturesU  5 
UTable 2: Technical Specifications of the VS-21H-IR 2x1 HDMIU  9 

Introduction 
1 Introduction 
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been 
providing a world of unique, creative, and affordable solutions to the vast 
range of problems that confront the video, audio, presentation, and 
broadcasting professional on a daily basis. In recent years, we have 
redesigned and upgraded most of our line, making the best even better! Our 
1,000-plus different models now appear in 11 groups
1
 that are clearly 
defined by function. 
Congratulations on purchasing your Kramer DigiTOOLS® VS-21H-IR 2x1 
2
 Switcher! The VS-21H-IR is ideal for: 
HDMI
•  Home theater, presentation and multimedia applications 
•  Rental and staging 
The package includes the following items: 
•  VS-21H-IR 2x1 HDMI Switcher 
•  Power adapter (12V DC) 
•  Infrared remote control transmitter (including the required batteries and 
a separate user manual
•  This user manual
3
) 
3
2 Getting Started 
We recommend that you: 
•  Unpack the equipment carefully and save the original box and 
packaging materials for possible future shipment 
•  Review the contents of this user manual 
Go to http://www.kramerelectronics.com to check for up-to-date 
user manuals, application programs, and to check if 
firmware upgrades are available (where appropriate).
1 GROUP 1: Distribution Amplifiers, GROUP 2: Switchers and Routers, GROUP 3: Control Systems, GROUP 4: 
Format/Standards Converters, GROUP 5: Range Extenders and Repeaters,  GROUP 6: Specialty AV Products, GROUP 7: 
Scan Converters and Scalers, GROUP 8: Cables and Connectors, GROUP 9: Room Connectivity, GROUP 10: Accessories 
and Rack Adapters and GROUP 11: Sierra Products 
2 High-Definition Multimedia Interface 
3 Download up-to-date Kramer user manuals from our Web site at 
http://www.kramerelectronics.com