
Contents 
1  Introduction  1 
2  Getting Started  2 
2.1  Achieving the Best Performance  2 
3  Overview  3 
3.1  Defining the RC-52A Room Controller Front Panel  4 
3.2  Defining the RC-52A Room Controller Rear Panel  5 
4  Connecting the RC-52A Room Controller  6 
4.1  The RS-232 Pinout  7 
4.2  The Audio Potentiometer Pinout  7 
4.3  Connecting the IR-OUT  8 
4.4  Using the RC-52A as an IR Repeater  8 
5  Installing the Configuration Software  9 
5.1  Configuring the RC-52A Buttons  9 
5.2  Locking and Unlocking the RC-52A  9 
6  Technical Specifications  10 
Figures 
UFigure 1: RC-52A Front Panel for Europe (80 and 86mm) and the United StatesU  4 
UFigure 2: RC-52A Rear Panel for Europe (80 and 86mm) and the United StatesU  5 
UFigure 3: Connecting the RC-52AU  6 
UFigure 4: RS-232 PinoutU  7 
UFigure 5: Audio Potentiometer PinoutU  7 
UFigure 6: IR Emitter WiringU  8 
UFigure 7: IR Repeater OperationU  8 
RC-52A –  Contents  i 
 

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 that are clearly defined by 
function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix 
Switchers; 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. 
Congratulations on purchasing your Kramer RC-52A Room Controller, which is 
designed to let you control an A/V system with ease, in a multimedia classroom or 
conference room. 
RC-52A –  Introduction  1 
 

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 
• Use Kramer high performance high resolution cables 
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). 
2.1  Achieving the Best Performance 
To achieve the best performance: 
• Use only good quality connection cables to avoid interference, deterioration 
in signal quality due to poor matching, and elevated noise levels (often 
associated with low quality cables) 
• Avoid interference from neighboring electrical appliances that may adversely 
influence signal quality 
• Position your Kramer RC-52A away from moisture, excessive sunlight and 
dust 
Caution:  No operator serviceable parts inside the unit 
Warning: 
Warning: 
2  RC-52A - Getting Started 
Use only the Kramer Electronics input power wall 
adapter that is provided with the unit 
Disconnect the power and unplug the unit from the wall 
before installing