Kramer VS-812 User manual

Kramer Electronics, Ltd.
USER MANUAL
Model:
VS-812
8x1 Composite / s-Video / Audio Switcher

Contents
i
Contents
1. Introduction 1
2. Getting Started 1
2.1 Quick Start 2
3. Overview 3
4. Your Composite / s-Video / Audio Switcher 3
5. Installing the VS-812 on a Rack 5
6. Connecting the VS-812 8x1 Composite / s-Video / Audio Switcher 6
6.1 Connecting the Balanced/Unbalanced Stereo Audio Input/Output 7
6.2 Connecting Several Independent VS-812 Units to a PC 8
6.2.1 Connecting via RS-232 Using a PC 8
6.2.2 Adjusting Jumpers JMP4 and JMP5 9
6.2.3 Setting the DIP-switches on an Independent VS-812 Unit 9
6.3 Connecting a Set of VS-812 Units to a PC 11
6.3.1 Preparing the RS-232 Connectors 12
6.3.2 Shorting Jumpers JMP4 and JMP5 13
6.3.3 Setting the DIP-switches on a Set of VS-812 Units 13
7. Operating Your Composite / s-Video / Audio Switcher 16
7.1 Using the Front Panel Buttons and Switches 16
7.1.1 Presetting up to eight INPUT SETUP Switches 16
7.1.2 Selecting a CV or a Y/C Source on an Independent Unit 17
7.1.3 Selecting a CV or a Y/C Source on a Set of three VS-812 Units 18
7.2 Switching and Distributing 19
8. Technical Specifications 21
Figures
Figure 1: VS-812 8x1 Composite / s-Video / Audio Switcher 4
Figure 2: Connecting the VS-812 8x1 Composite / s-Video / Audio Switcher 7
Figure 3: Connecting the Unbalanced Stereo Audio Input 7
Figure 4: Connecting the Balanced Stereo Audio Input/Output 8
Figure 5: Connecting an Unbalanced Output 8
Figure 6: Connecting to a PC without using a Null-modem Adapter 9
Figure 7: Location of the DIP-switches on a VS-812 Unit 9
Figure 8: DIP-switch Settings on an Independent VS-812 Unit 10
Figure 9: DIP-switch Settings on 7 Independent VS-812 Units 11
Figure 10: Preparing the RS-232 Connectors 12
Figure 11: Location of Jumpers JMP4 and JMP5 13
Figure 12: A RS-232 Port Controlling a Set of Three Units and an Independent Unit 15
Figure 13: Setting the INPUT SETUP Switches 16
Figure 14: Selecting a CV or a Y/C Source 17
Figure 15: Operating a Set of three Switchers 18
Figure 16: Switching and Distributing 19
Figure 17: A 1:2 CV Distribution Amplifier and a 1:2 Y/C Distribution Amplifier 20

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Introduction
ii
Tables
Table 1: Front Panel VS-812 8x1 Composite / s-Video / Audio Switcher Features 4
Table 2: MACHINE # DIP-switch Settings for Independent VS-812 Unit(s) 10
Table 3: MACHINE ADDRESS # DIP-switch Settings for a Set of VS-812 Units 14
Table 4: Technical Specifications of the VS-812 21

Introduction
1
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 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 groups1
Congratulations on purchasing your Kramer VS-812 8x1 Composite / s-Video
/ Audio Switcher. This product is ideal for the following typical applications:
that are clearly defined
by function.
•Video production studios
•Live broadcast, for switching between cameras in real-time
•Presentation, CCTV and home theater systems
The package includes the following items:
•VS-812 8x1 Composite / s-Video / Audio Switcher
•Null-modem adapter and power cord
•Windows®-based Kramer control software and Kramer RC
Configuration software
•This user manual2
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 cables3
1 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; GROUP 11: Sierra Products
2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Getting Started
2
2.1 Quick Start
This quick start chart summarizes the basic setup and operation:

Overview
3
3
3. Overview
The VS-812 is a unique dual-format switcher and distribution amplifier for
composite and s-Video (Y/C) and balanced stereo audio signals. Each of the
eight inputs can be configured as either composite or s-Video (Y/C) and is
converted to produce composite and s-Video (Y/C) outputs simultaneously.
The VS-812 8x1 Composite / s-Video / Audio Switcher:
•Features high bandwidths of 370MHz (-3dB) for composite video, and
190MHz (-3dB) for s-Video (Y)
•Is a dual format 8x1 switcher with each input able to be selected as
composite or s-Video via the eight INPUT SETUP DIP-switches
•Includes built-in bidirectional format conversion: the two composite and
two s-Video (Y/C) outputs are live at all times regardless of input
configuration
•Features glitch-free transitions when the sources are genlocked
•Features vertical interval switching1
•Is controlled via the eight front panel INPUT SELECTOR buttons or
remotely via RS-232 serial commands transmitted by a touch screen
system, PC, or other serial controller front panel RS-232 (K-Router™
Windows®-based software is included)
•Has a standard 1U 19” Rack Mount Size
To achieve the best performance:
•Use only good quality connection cables2
•Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your Kramer VS-812
away from moisture, excessive sunlight and dust
to avoid interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables).
4. Your Composite / s-Video / Audio Switcher
Figure 1and Table 1define the front and rear panels3
1 When using composite video, sync is derived from the CV IN 1 connector. When using s-Video, sync is derived from the
s-Video (Y/C) IN 1 connector
of the VS-812 8x1
Composite / s-Video / Audio Switcher:
2 Available from Kramer Electronics on our Web site at http://www.kramerelectronics.com
3 Table 2 and Figure 7 define the underside panel (machine number DIP-switches)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Composite / s-Video / Audio Switcher
4
Figure 1: VS-812 8x1 Composite / s-Video / Audio Switcher
Table 1: Front Panel VS-812 8x1 Composite / s-Video / Audio Switcher Features
# Feature Function
1 POWER Switch Switch for turning the unit ON or OFF
2 INPUT SETUP DIP-switches Set the video format, Y/C or CV, for each input (from 1 to 8) selected via an
INPUT SELECTOR button
3 INPUT SELECTOR Buttons Select the video / audio source (from 1 to 8)
4 Composite Video
IN Audio 5-pin Terminal Block Connectors Connect to the eight audio (for the composite video) sources (from 1 to 8)
5 BNC Connectors Connect to the composite video sources (1 to 8)
6 OUT Composite Video BNC Connectors Connect to the composite video acceptors (1 to 2)
7 Audio 5-pin Terminal Block Connectors Connect to the two audio (composite video and s-Video) acceptors (from 1 to 2)
8 s-Video 4-pin Connectors Connect to the s-Video acceptors (1 to 2)
9 IN s-Video 4-pin Connectors Connect to the s-Video sources (1 to 8)
10 Audio (s-Video) 5-pin Terminal Block Connectors Connect to the eight audio (for the s-Video)sources (from 1 to 8)
11 RS-232 9-pin D-sub Connector Connects to PC or Serial Controller
12 Power Connector with Fuse AC connector enabling power supply to the unit

Installing the VS-812 on a Rack
5
5
5. Installing the VS-812 on a Rack
This section describes what to do before installing in a rack and how to rack
mount.
Before Installing in a Rack How to Rack Mount
Before installing in a rack, be sure that the environment is
within the recommended range: To rack-mount a machine:
1. Attach both ear brackets to the
machine. To do so, remove the
screws from each side of the
machine (3 on each side), and
replace those screws through the
ear brackets.
2. Place the ears of the machine
against the rack rails, and insert the
proper screws (not provided)
through each of the four holes in the
rack ears.
Note that:
•In some models, the front panel
may feature built-in rack ears
•Detachable rack ears can be
removed for desktop use
•Always mount the machine in the
rack before you attach any cables
or connect the machine to the
power
•If you are using a Kramer rack
adapter kit (for a machine that is not
19"), see the Rack Adapters user
manual for installation instructions
(you can download it at:
http://www.kramerelectronics.com)
Operating temperature range +5° to +45° C (41° to 113° F)
Operating humidity range 10 to 90% RHL, non-condensing
Storage temperature range -20° to +70° C (-4° to 158° F)
Storage humidity range 5 to 95% RHL, non-condensing
!
CAUTION
!!
When installing on a 19" rack, avoid hazards by taking
care that:
1. It is located within the recommended environmental
conditions, as the operating ambient temperature of a
closed or multi unit rack assembly may exceed the
room ambient temperature.
2. Once rack mounted, enough air will still flow around
the machine.
3. The machine is placed straight in the correct
horizontal position.
4. You do not overload the circuit(s). When connecting
the machine to the supply circuit, overloading the
circuits might have a detrimental effect on overcurrent
protection and supply wiring. Refer to the appropriate
nameplate ratings for information. For example, for
fuse replacement, see the value printed on the
product label.
5. The machine is earthed (grounded) in a reliable way
and is connected only to an electricity socket with
grounding. Pay particular attention to situations where
electricity is supplied indirectly (when the power cord
is not plugged directly into the socket in the wall), for
example, when using an extension cable or a power
strip, and that you use only the power cord that is
supplied with the machine.

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the VS-812 8x1 Composite / s-Video / Audio Switcher
6
6. Connecting the VS-812 8x1 Composite / s-Video / Audio
Switcher
To connect1Figure 2the VS-812, as illustrated in the example in , do the
following2
1. Connect up to eight composite video and stereo audio
:
3sources (for example,
composite video players) to the IN BNC connectors and terminal block4
2. Connect up to eight s-Video and stereo audio sources (for example, s-Video
players) to the IN 4-pin connectors and terminal block connectors
connectors.
4.
3. Connect the two OUT BNC connectors to up to two composite video acceptors
(for example, composite video recorders)
4. Connect the two OUT 4-pin connectors to up to two s-Video (Y/C) acceptors
(for example, s-Video recorders).
5. Connect the two OUT terminal block connectors4to up to two balanced stereo
audio acceptors (for example, balanced stereo audio amplifiers with speakers).
6. If required, you can connect a PC and/or controller to the RS-232 port.
7. Connect the power cord4,5
.
1 You do not need to connect all inputs and outputs
2 Switch OFF the power on each device before connecting it to your VS-812. After connecting your VS-812, switch on its
power and then switch on the power on each device
3 Balanced or unbalanced (see section 6.1)
4 Not shown in Figure 2
5 We recommend that you use only the power cord that is supplied with this machine

Connecting the VS-812 8x1 Composite / s-Video / Audio Switcher
7
7
Figure 2: Connecting the VS-812 8x1 Composite / s-Video / Audio Switcher
6.1 Connecting the Balanced/Unbalanced Stereo Audio Input/Output
This section illustrates how to wire:
•A unbalanced input connection, see Figure 3
•A balanced output connection, see Figure 4
•An unbalanced audio output, see Figure 5
Figure 3: Connecting the Unbalanced Stereo Audio Input