KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
RTBUS-21
Round Table Connection Bus
P/N: 2900-300086 Rev 2
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Contents
Figures
RTBUS-21 – Contents
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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 Video Products.
Thank you for purchasing the Kramer RTBUS-21 Round Table Connection Bus,
which is ideal for using in boardrooms, conference and training rooms!
RTBUS-21 - Introduction
1
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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
user manuals, a complete list of Kramer wall plates and module
connectors, application programs, and to check if firmware
upgrades are available (where appropriate).
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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 RTBUS-21 away from moisture, excessive sunlight
and dust
2
RTBUS-21 - Getting Started
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3
Overview
The RTBUS-21 is an elegant furniture-mounted, round connection bus. The
RTBUS-21 features a pneumatic mechanism for pneumatic lifting and smooth
closing of its lid. It is easily installed into a table or podium top, and its interface
enables you to connect any equipment to systems installed in a room via the
following pass-through connectors:
•
•
•
•
1 UXGA on a 15-pin HD connector
1 stereo audio on a 3.5mm connector
1 HDMI connector
1 Ethernet port on an RJ-45 connector
The RTBUS-21 supports HDMI with Deep Color, x.v.Color™, Lip Sync, HDMI
Uncompressed Audio Channels, Dolby TrueHD, DTS-HD, and CEC.
We offer the RTBUS-21 in either a black anodized or a brushed clear aluminum
surface.
RTBUS-21 - Overview
3
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3.1
About HDMI—General Description
High-Definition Multimedia Interface (HDMI) is an uncompressed all-digital audio/video
interface, widely supported in the entertainment and home cinema industry. HDMI
ensures an all-digital rendering of video without the losses associated with analog
interfaces and their unnecessary digital-to-analog conversions. It delivers the maximum
high-definition image and sound quality in use today. Note that Kramer Electronics
Limited is an HDMI Adopter and an HDCP Licensee.
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered
trademarks of HDMI licensing LLC.
In particular, HDMI:
•
Provides a simple interface between any audio/video source, such as a set-
top box, DVD player, or A/V receiver and video monitor, such as a digital flat
LCD / plasma television (DTV), over a single lengthy cable
SIMPLICITY - With video and multi-channel audio combined into a single cable, the
cost, complexity, and confusion of multiple cables currently used in A/V systems is
reduced
LENGTHY CABLE - HDMI technology has been designed to use standard copper cable
construction at up to 15m
•
Supports standard, enhanced, high-definition video, and multi-channel digital
audio on a single cable
MULTI-CHANNEL DIGITAL AUDIO - HDMI supports multiple audio formats, from
standard stereo to multi-channel surround-sound. HDMI has the capacity to support
Dolby 5.1 audio and high-resolution audio formats
•
•
Transmits all ATSC HDTV standards and supports 8-channel digital audio,
with bandwidth to spare to accommodate future enhancements and
requirements
Benefits consumers by providing superior, uncompressed digital video quality
via a single cable, and user-friendly connector
HDMI provides the quality and functionality of a digital interface while also supporting
uncompressed video formats in a simple, cost-effective manner
•
•
Is backward-compatible with DVI (Digital Visual Interface)
Supports CEC, two-way communication between the video source (such as a
DVD player) and the digital television, enabling new functionality such as
automatic configuration and one-button play
•
Has the capacity to support existing high-definition video formats (720p,
1080i, and 1080p, 2K and 4K), standard definition formats such as NTSC or
PAL, as well as 480p and 576p
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RTBUS-21 - Overview
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4
Defining the RTBUS-21
Figure 1: RTBUS-21 Top View
#
Feature
Function
1
Black anodized or brushed
Covers the connecting surface, leaving the table surface
aluminum semi-automatic lid neat and tidy
2
3
4
5
6
7
8
9
Outer Rim
Fits over the table surface
Pneumatic Mechanism
Connecting Surface
Rubber Protectors
Mounting Screws
Enables automatic lifting and smooth closing of the lid
Protect the table surface when mounting the unit (2)
For securing the RTBUS-21 to the table(2)
Tighten to lock the mounting butterfly screw (2)
Tighten to secure the unit to the table surface (2)
Locking Butterfly Nuts
Mounting Butterfly Nuts
Mounting Bracket Slits (two
sets on each side)
Insert the mounting brackets to the slits when installing
10 Mounting Brackets (2 units)
Place in the bracket slits after inserting the enclosure into
the table – for securing the unit to the table surface
RTBUS-21 - Defining the RTBUS-21
5
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4.1 The RTBUS-21 Connecting Surface
Figure 2 defines the connecting surface:
Figure 2: RTBUS-21 Connecting Surface
#
Feature
ETHERNET RJ-45 Connector
AUDIO 3.5mm Mini Jack
PC 15-pin HD Connector
HDMI Connector
Function
1
2
3
4
5
6
Connect to a network
Connects to an unbalanced stereo audio source
Connects to a VGA source
Connect to HDMI source
Power Socket
Connects to 90-264V AC power
For safely closing the lid
Lid Latch
6
RTBUS-21 - Defining the RTBUS-21
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5
Installing the RTBUS-21
To install the RTBUS-21 perform the following steps:
1. Drill a hole in the table (see Section 5.1).
2. Insert the unit through the hole and secure the unit to the table (see Section
3. Connect the cables (see Section 5.3).
5.1 Drilling a Hole in the Table
To drill an opening in the table:
1. Using any standard cup bit drill with a diameter ranging from 110mm to
112mm (4.33in to 4.4in), drill a hole in the table in the desired location.
The thickness of the table should be 3in (76mm) or less.
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2. Clean the table surface.
Take care not to damage the table. Kramer Electronics is not
responsible for any damage caused to the table.
!
RTBUS-21 - Installing the RTBUS-21
7
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5.2
Mounting the RTBUS-21 in the Table
To mount the unit, follow these steps:
Step 1: Insert the RTBUS-21 into
the hole cut into the table making
sure the outer rim is firm against the
surface of the table.
Step 2: From underneath the table,
slide the mounting brackets into the
appropriate slots.
Step 3: Tighten the butterfly
mounting screws securely upward
against the table.
Step 4: Lock the mounting screws
into position with the locking
butterfly screws.
8
RTBUS-21 - Installing the RTBUS-21
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5.3
Connecting the Cables and Wires
Figure 3 illustrates how to connect the cables to the underside of the unit:
Figure 3: Connecting the Cables
MALE connector at the free end so they can be plugged directly into
the acceptors. You can extend these cables if required.
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Note that the connecting surface is an integral part of the
RTBUS-21 enclosure and cannot be detached.
RTBUS-21 - Installing the RTBUS-21
9
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6
Using the RTBUS-21
Once the RTBUS-21 is installed, you can easily customize it to your own needs by
directly plugging in the required AV equipment, as illustrated in the example in
Figure 4: RTBUS-21 Boardroom Installation
10
RTBUS-21 - Using the RTBUS-21
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7
Technical Specifications
PORTS:
1 HDMI connector, 1 15-pin HD connector, 1 3.5mm mini
jack
OPERATING TEMPERATURE +5 to +45 Deg. Centigrade
RANGE:
OPERATING HUMIDITY
RANGE:
10 to 90% RHL, non-condensing
STORAGE TEMPERATURE
RANGE:
-20 to +70Deg. C.
STORAGE HUMIDITY RANGE: 5 to 95% RHL, non-condensing
FUSE RATING:
DIMENSIONS:
WEIGHT:
T 6.3A 250V
13cm x 16cm (5.1" x 6.3") Diameter, H
0.85kg (1.9lbs) approx.
1.2kg (2.6lbs) approx. with mounting brackets
ACCESSORIES:
Power cord
Specifications are subject to change without notice at http://www.kramerelectronics.com
RTBUS-21 - Technical Specifications
11
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12
RTBUS-21
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For the latest information on our products and a list of Kramer distributors,
visit our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing
!
P/N:
Rev:
2900-300086
2
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