Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-42
Video Switcher - Distributor
Introduction
Contents
1
Introduction 1
2
Getting Started 2
3
Overview 2
4
Your Video Switcher - Distributor 2
5
Using a Video Switcher - Distributor 3
5.1 Connecting the Video Switcher - Distributor 4
5.2 Setting the LINK Switch 4
5.3 Previewing Connected Sources 4
6
Technical Specifications 4
Figures
Figure 1: VM-42 Video Switcher - Distributor 3
Figure 2: Different VM-42 Video Switcher - Distributor Combinations 5
Tables
Table 1: Front Panel Features and Functions of the VM-42 Video Switcher - Distributor 3
Table 2: Rear Panel Features and Functions of the VM-42 Video Switcher - Distributor 3
Table 3: Technical Specifications of the VM-42 Video Switcher - Distributor 4
1 Introduction
Dedication by Kramer Electronics since 1981, to the development and
manufacture of high quality video/audio equipment, makes the Kramer line
an integral part of the finest production and presentation facilities in the
world. In recent years, Kramer has redesigned and upgraded most of the line,
making the best even better! The Kramer line of professional video/audio
electronics is one of the most versatile and complete available, and is a true
leader in terms of quality, workmanship, price/performance ratio and
innovation.
In addition to our high quality distribution amplifiers, and switchers and
matrices, like the VM-42 Video Switcher - Distributor, we also offer
excellent presentation processors, interfaces, remote controllers and
computer-related products.
Congratulations on purchasing your Kramer VM-42 Video Switcher -
Distributor. This product is ideal for using with:
Small studio video distribution applications
Video switching and routing in studios, stores and showrooms
A preview and input multiplier for video switchers and mixers
1
Getting Started
The package includes the following items:
VM-42 Video Switcher - Distributor
Power cord
This user manual
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
3 Overview
The unique and versatile VM-42 Video Switcher - Distributor combines the
functions of a composite video switcher and a distribution amplifier. The
VM-42 Video Switcher - Distributor is a 4x1 vertical interval switcher, with
each of the 4 inputs also operating as a 1:2 distribution amplifier.
The VM-42 Video Switcher - Distributor is linkable in any of the following
combinations:
4 x 1 Switcher
1 x 1:8 DA
4 x 1:2 DA
2 x 1:4 DA
1 x 1:6 + 1 x 1:2 DA
Achieving the best performance means:
Connecting only good quality connection cables, thus avoiding
interference, deterioration in signal quality due to poor matching, and elevated
noise levels (often associated with low quality cables)
Avoiding interference from neighboring electrical appliances that may
adversely influence signal quality and positioning your VM-42 Video Switcher
- Distributor in a location free from moisture and away from excessive
sunlight and dust
4 Your Video Switcher - Distributor
Figure 1 and Tables 1 and 2 define the VM-42 Video Switcher – Distributor:
2
KRAMER ELECTRONICS, LTD.
Using a Video Switcher - Distributor
Figure 1: VM-42 Video Switcher - Distributor
Table 1: Front Panel Features and Functions of the VM-42 Video Switcher - Distributor
# Feature Function
1 POWER Switch Illuminated switch supplying power to the unit
2 INPUT SELECTOR Buttons Select the video source (from A to D)
Table 2: Rear Panel Features and Functions of the VM-42 Video Switcher - Distributor
# Feature Function
1 OUTPUT BNC Connector Connects to a monitor or other acceptor for previewing sources
2 OUTPUT BNC Connectors Connect to up to 2 acceptors for each of the 4 pairs of outputs (A1/A2,
B1/B2, C1/C2, D1/D2)
3 LINK Switch Push to the left to select LINK when joining several inputs
4 Power Connector with Fuse 230 VAC 50/60 Hz (115 VAC, U.S.A.) power inlet
5 INPUT BNC Connector Connects to the composite video source (A, B, C, D)
5 Using a Video Switcher - Distributor
Figure 2 illustrates the following different combinations with which you can
use your VM-42 Video Switcher – Distributor:
4 x 1 Switcher
1 x 1:8 DA
4 x 1:2 DA
2 x 1:4 DA
1 x 1:6 + 1 x 1:2 DA
3
Technical Specifications
5.1 Connecting the Video Switcher - Distributor
To connect a VM-42 Video Switcher – Distributor unit, do the following:
1. Connect the composite video sources to the appropriate INPUT
connectors - A, B, C and/or D.
2. Connect the composite video acceptors to the appropriate OUTPUT
connectors - A1, A2, B1, B2, C1, C2, D1 and/or D2.
3. Set the LINK switch as required. Refer to section 5.2.
5.2 Setting the LINK Switch
To join more than one INPUT, do the following:
Push the LINK switch that is located between 2 inputs, to the left
The INPUT to the right of the LINK switch combines with the INPUT to the
left
5.3 Previewing Connected Sources
To preview a source, do the following:
Connect the OUTPUT connector to a monitor
Press the appropriate INPUT SELECTOR button (from A to D)
The monitor displays the selected video source
6 Technical Specifications
Table 3: Technical Specifications of the VM-42 Video Switcher - Distributor
Inputs:
Outputs:
Video Bandwidth: 200 MHz -3dB
Crosstalk: -40 dB @ 10MHz
Coupling: DC
Diff. Gain: 0.12%.
Diff. Phase: 0.11 Deg
S/N Ratio: -73dB
K-Factor: <0.05%
Max. Video Output: 2 Vpp
Power Source: 230 VAC, 50/60 Hz (115VAC, U.S.A.) 4.6 VA
Dimensions: 24.5 cm x 18 cm x 4.5 cm (9.6" x 7" x 1.7"), W , D, H
Weight: 1.5 kg. (3.3 lbs.) approx.
Accessories: Power cord
Options: 19" rack adapter RK-MEDN kit (holds one unit in a vertical space)
4
4 composite video, 1Vpp / 75, on BNC type connectors
4x2 composite, linkable to become 2x4, 1x6+1x2, 1x8 1Vpp / 75 on BNC type
connectors
1 switch-selected composite video 1Vpp / 75 on a BNC type connector
KRAMER ELECTRONICS, LTD.
Technical Specifications
5
Figure 2: Different VM-42 Video Switcher - Distributor Combinations
LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the
following terms.
HOW LONG IS THE WARRANTY
Labor and parts are warranted for three years from the date of the first customer purchase.
WHO IS PROTECTED?
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered by
the warranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agent s listed in the web site
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed.
3. Damage, deterioration or malfunction resulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product
WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR
We will pay labor and material expenses for covered items. We will not pay for the following:
1. Removal or installations charges.
2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These co sts are the
responsibility of the Kramer dealer from whom the product was purchased.
3. Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
2. Whenever warranty service is required, the original d ated invoice (o r a co py) must be presented as proof of warranty coverage,
and should be included in any shipment of the product. Please also include in any mailing a contact name, company, address, and
a description of the problem(s).
3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMITATION OF IMPLIED WARRANTIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSION OF DAMAGES
The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer
shall not be liable for:
1. Damage to other pro perty caused by defects in this product, damages based upon inconve nience, loss of use of the product, loss
of time, commercial loss; or:
2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.
NOTE: All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.
This equipment has been tested to determine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
CFR-47: FCC Rules and Regulations:
CAUTION!
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or modifications to
the unit without the expressed approval of the manufacturer will void user authority to operate the equipment.
Use the supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.
generic emission standard.
Part 1: Residential, commercial and light industry"
Part 1: Residential, commercial and light industry environment".
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
6
KRAMER ELECTRONICS, LTD.
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-001012 REV 4
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