Kramer RC-76R User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
RC
-76R/RC-78R
Room
Controllers
P/N: 2900-300253 Rev 5

RC-76R/RC-78R – Contents i
Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Safety Instructions 3
2.3 Recycling Kramer Products 3
3Overview 4
3.1 Defining the RC-76R/RC-78R Room Controllers 5
4Connecting the RC-76R/RC-78R 8
4.1 Connecting RS-232 Devices 9
4.2 Connecting RS-485 Devices 9
4.3 Connecting the Ethernet Port 10
4.4 Connecting the K-NET Port 11
4.5 Grounding the RC-76R/RC-78R 11
5Operating the RC-76R/RC-78R 13
6Front Panel Button Caps and Labels 14
6.1 Installing the Front Panel Button Caps and Labels 17
7Technical Specifications 19
Figures
Figure 1: RC-76R/RC-78R Room Controllers – US-D Size 5
Figure 2: RC-76R/RC-78R Room Controllers – EU / UK Size 6
Figure 2: Connecting the RC-76R/RC-78R Room Controllers 9
Figure 3: K-NET PINOUT Connection 11
Figure 4: Grounding Connection Components 11
Figure 5: Sample Button Label Sheet 16
Figure 6: Removing the Mounting Plate Screws 17
Figure 7: Button Cap Orientation with Label 18
Figure 8: Replacing the Button Cap 18

RC-76R/RC-78R - Introduction 1
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 video, audio, presentation, and broadcasting professionals
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 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; GROUP 12: Digital Signage; GROUP 13: Audio; and GROUP 14:
Collaboration.
Congratulations on purchasing your Kramer RC-76R/RC-78R Room Controllers,
which are ideal for the following typical applications:
•Convenient control of complex multimedia systems and other room facilities
such as screens, lighting and shades in auditoriums and meeting rooms

2 RC-76R/RC-78R - Getting Started
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
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)
•Do not secure the cables in tight bundles or roll the slack into tight coils
•Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
•Position your Kramer RC-76R/RC-78R away from moisture, excessive
sunlight and dust
This equipment is to be used only inside a building. It may only be
connected to other equipment that is installed inside a building.
!

RC-76R/RC-78R - Getting Started 3
2.2 Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
Warning: Use only the Kramer Electronics input power wall
adapter that is provided with the unit
Warning: Disconnect the power and unplug the unit from the wall
before installing
2.3 Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
aims to reduce the amount of WEEE sent for disposal to landfill or incineration by
requiring it to be collected and recycled. To comply with the WEEE Directive,
Kramer Electronics has made arrangements with the European Advanced
Recycling Network (EARN) and will cover any costs of treatment, recycling and
recovery of waste Kramer Electronics branded equipment on arrival at the EARN
facility.
!

4 RC-76R/RC-78R - Overview
3 Overview
The RC-76R/RC-78R is a 6-button/8-button control keypad that fits into standard
1 gang US wall junction boxes. Connected over Ethernet to Site-CTRL™ remote
AV control, site management & monitoring system, as well as LAN-connected
control gateways for extended controlled devices capacity, and over KNET™ to
master room controller and auxiliary keypads for remote keypad control, it can
flexibly serve either as a standalone room controller, part of a multi-unit KNET™
system, or part of a multi-unit Ethernet system managed by the Kramer Site-
CTRL™ site management platform. The RC-76R/RC-78R have identical
functionality.
The RC-76R/RC-78R features:
•6/8 configurable, RGB backlit, front panel buttons, configured using the
K-Config configuration software
•1 general purpose I/O port that can be configured by K-Config as a digital
input, digital output or analog input for interfacing with a variety of devices
such as sensors, switches, LEDs, or relays
•2 bidirectional RS-232 ports that can control AV equipment such as
projectors, LCD and PDP displays, power amplifiers, switchers and scalers
•2 relay contact closure ports that can control other room items related to the
AV system, such as, raising and lowering drapes, a screen or a projector
•2 IR control ports with an IR learning receiver behind the design frame that
learns commands from any IR remote
•1 RS-485 control port
•Compatibility with Kramer Site-CTRL software for network remote control
and management over the Ethernet port
•A K-NET™ control channel that connects compatible user interfaces, supply
power and control data over a single cable
•Flexible control via Ethernet and K-NET
•Standard 1 gang US junction box size

RC-76R/RC-78R - Overview 5
3.1 Defining the RC-76R/RC-78R Room Controllers
This section defines the RC-76R/RC-78R.
Figure 1: RC-76R/RC-78R Room Controllers – US-D Size

6 RC-76R/RC-78R - Overview
Figure 2: RC-76R/RC-78R Room Controllers – EU / UK Size
#
Feature
Function
1
6/8 Configurable Buttons
Function is programmed by the K-Config
Configuration software
2
USB Connector
Connect to a computer for firmware upgrade or for
uploading the configuration file
3
ETHERNET RJ-45 Connector
Connects to a PC or other serial controller through

RC-76R/RC-78R - Overview 7
#
Feature
Function
computer LAN to control AV products
4
IR 2 Terminal Block Connector
Connect to IR emitter cable 2
5
IR 1 Terminal Block Connector
Connect to IR emitter cable 1
6
RELAY C2
Connect to low-voltage relay-driven device 2
7
RELAY C1
Connect to low-voltage relay-driven device 1
8 Ring Tongue Terminal Grounding
Screw
Connect to grounding wire (optional), (see
Section 4.5)
9
Power Supply 2-pin Terminal
Block Connector
Connect +12V to +12V, ground to GND
10
K-NET Terminal Block Connector
Connect the GND pin to the Ground connection;
pin B (-) and pin A (+) are for RS-485, and the
+12V pin is for powering the unit
11
RESET Button
Press to reset to factory default definitions:
IP number −192.168.1.39, Mask – 255.255.0.0,
Gateway – 0.0.0.0
First, disconnect the power supply and then connect it
again while pressing the Reset button. The unit
powers up and loads its memory with the factory
default definitions and erases all stored preset
12
RS-232 (2)
Terminal Block
Connector
Connects to a PC or the remote controller
13
RS-232 (1) Terminal Block
Connector
Connects to a PC or the remote controller
14
Program Switch
Slide the switch to the left when programming the
unit; slide to the right for normal operation
15
RS-485 Terminal Block Connector
Pins B (-) and A (+) are for RS-485;
Pin G may be connected to the shield (if required)
16 GPIO/GND Terminal Block
Connector
Connect to various sensors, switches, LEDs, or
relays
17 RS-485 Terminator Switch Slide the DIP-switch up to terminate the RS-485
line with a 120Ω load; down is for no termination
18
K-Net Terminator Switch
Slide the DIP-switch up to terminate the K-Net line
with a 120Ω load; down is for no termination
19
Mounting Plate Screws
2 screws that hold the mounting plate to the body
of the device. Remove to access the buttons (see
Figure 7)

8 RC-76R/RC-78R - Connecting the RC-76R/RC-78R
4 Connecting the RC-76R/RC-78R
Always switch off the power to each device before connecting it to your
RC-76R/RC-78R. After connecting your RC-76R/RC-78R, connect its
power and then switch on the power to each device.
To connect the RC-76R/RC-78R as illustrated in the example in Figure 3:
1. Connect the IR outputs as follows:
Connect an IR emitter to IR OUTPUT 1 and attach the emitter to the
DVD player 1
Connect an IR emitter to IR OUTPUT 2 and attach the emitter to the
DVD player 2
2. Connect the RS-232 ports (see Section 4.1) as follows:
Connect RS-232 port 1 to the projector
Connect RS-232 port 2 to the plasma display
3. Connect the RELAY terminal block connectors as follows:
Connect RELAY C and 1 to the screen
Connect RELAY C and 2 to the lighting system
4. Connect the GPI/O 1 port to a motion detector.
5. Connect the Ethernet port to a network.
i

RC-76R/RC-78R - Connecting the RC-76R/RC-78R 9
Figure 3: Connecting the RC-76R/RC-78R Room Controllers
4.1 Connecting RS-232 Devices
You can control up to two AV devices such as a projector or an RS-232 display by
connecting them to the RC-76R/RC-78R via their RS-232 connection.
To connect a device to the RC-76R/RC-78R via RS-232:
•Using a straight cable, connect pin 2 to TX, pin 3 to RX and pin 5 to GND on
the RS-232 terminal block connector of the RC-76R/RC-78R
4.2 Connecting RS-485 Devices
You can control up to one AV device by connecting it to the RC-76R/RC-78R via
its RS-485 connection.
To connect a device to the RC-76R/RC-78R via RS-485:

10 RC-76R/RC-78R - Connecting the RC-76R/RC-78R
•Connect the A (+) pin of the device to the Apin on the RS-485 terminal block
of the RC-76R/RC-78R
•Connect the B (-) pin of the device to the Bpin on the RS-485 terminal block of
the RC-76R/RC-78R
•Connect the G pin of the device to the GND pin on the RS-485 terminal block
of the RC-76R/RC-78R
If your device is the first or last device on the line, slide the RS-485 termination
switch up otherwise make sure it is set to down (see Figure 1).
4.3 Connecting the Ethernet Port
The Ethernet connection of the RC-76R/RC-78R lets you perform all control
functions of the RC-76R/RC-78R over the Internet using a PC running the Kramer
Site-CTRL control program to control AV devices.
To connect the RC-76R/RC-78R to a network:
1. Connect the Ethernet port of the RC-76R/RC-78R to the Ethernet port on a
network hub or network router, via a straight cable with RJ-45 connectors.
2. At the other end, connect the Internet to a PC running Site-CTRL.
3. After connecting the Ethernet port, you have to install and configure it. For
detailed instructions on how to install and configure your Ethernet port, see
the K-Config Software Guide.

RC-76R/RC-78R - Connecting the RC-76R/RC-78R 11
4.4 Connecting the K-NET Port
The K-NET port is wired as shown in Figure 4.
Figure 4: K-NET PINOUT Connection
If your device is the first or last device on the line, slide the K-Net termination
switch up otherwise make sure it is set to down (see Figure 1).
4.5 Grounding the RC-76R/RC-78R
The grounding screw is used to earth the chassis of the unit to the building ground
preventing static electricity from impacting the performance of the unit.
Figure 5 defines the grounding screw components.
Figure 5: Grounding Connection Components
#
Component Description
1
M3X6 screw
2
1/8" Toothed Lock Washer
3 M3 Ring Tongue Terminal

12 RC-76R/RC-78R - Connecting the RC-76R/RC-78R
To ground the RC-76R/RC-78R:
1. Connect the ring tongue terminal to the building grounding point wire (a
green-yellow, AWG#18 (0.82mm2) wire, crimped with a proper hand-tool is
recommended).
2. Insert the M3x6 screw through the toothed lock washers and the tongue
terminal in the order shown above.
3. Insert the M3x6 screw (with the two toothed lock washers and ring tongue
terminal) into the grounding screw hole and tighten the screw.

RC-76R/RC-78R - Operating the RC-76R/RC-78R 13
5 Operating the RC-76R/RC-78R
You can operate your RC-76R/RC-78R using:
•Front panel buttons. These are configured using the K-Config software. For
instructions on using the software, see the K-Config Software Guide
•A PC running Site-CTRL control software:
To operate your device using Site-CTRL, see the Site-CTRL User Guide
available at the Kramer Web site
•The built-in Web server. For more information, see the K-Config User Guide

14 RC-76R/RC-78R - Front Panel Button Caps and Labels
6 Front Panel Button Caps and Labels
The RC-76R/RC-78R are supplied with a button label sheet and 6/8 clear, button
caps to house the labels. The label size: 8.8mm x 8.8mm. Figure 6 illustrates a
sample button label sheet.

RC-76R/RC-78R - Front Panel Button Caps and Labels 15

16 RC-76R/RC-78R - Front Panel Button Caps and Labels
Figure 6: Sample Button Label Sheet

RC-76R/RC-78R - Front Panel Button Caps and Labels 17
6.1 Installing the Front Panel Button Caps and Labels
To install the button caps and labels:
1. Remove the required labels from the supplied button label sheet.
2. Unscrew the design frame from the device. Put the frame and screws aside.
3. To access the buttons, remove the two mounting plate screws (see Figure 7)
and remove the mounting plate. Put the plate and screws aside.
Figure 7: Removing the Mounting Plate Screws
4. Lift each cap away from its button.
5. Holding the button cap with the “wings” on the top and bottom as shown in
Figure 8, insert the label inside the cap.