Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-312
Multi-Format Video/Audio Distributor
Contents
1
Introduction 1
2
Getting Started 1
3
Overview 1
4
Your VM-312 Multi-Format Video/Audio Distributor 2
5
Connecting the VM-312 Multi-Format Distributor 4
6
Technical Specifications 6
Contents
Figures
Figure 1: VM-312 Multi-Format Video/Audio Distributor 2
Figure 2: Connecting the VM-312 Multi-Format Distributor 5
Tables
Table 1: VM-312 Multi-Format Video/Audio Distributor Features 3
Table 2: Technical Specifications of the VM-312 Multi-Format Distributor 6
i
Introduction
1 Introduction
Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video,
audio and presentation professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better! Our
500-plus different models now appear in 8 Groups1, which are clearly defined
by function.
Congratulations on purchasing your VM-312 Multi-Format Video/Audio
Distributor, which is ideal for:
Multi-format presentation applications that require a preview option
Stage and educational applications
Video studios that need Multi-format signal distribution
The package includes the following items:
VM-312 Multi-Format Video/Audio Distributor
Power adapter (12V DC input)
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
3 Overview
The Kramer VM-312 is a high performance multi-format distributor for
component video, composite video, s-Video and unbalanced stereo audio
signals, all in one box. For each signal, it takes one input, provides correct
buffering and isolation, and distributes the signal simultaneously to two
identical outputs.
1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:
Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors
2 Download up-to-date Kramer user manuals from the Internet at: http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
1
Your VM-312 Multi-Format Video/Audio Distributor
The VM-312:
Includes one 1:2 composite video distributor on RCA connectors, one 1:2
Y/C distributor on 4p connectors, one 1:2 component video distributor on
RCA connectors, and one 1:2 unbalanced stereo audio distributor on
3.5mm mini jack connectors
Has a video bandwidth exceeding 400MHz, ensuring that it remains
transparent in almost any application
To achieve the best performance:
Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noiselevels (often associated with low quality cables)
Avoid interference from neighboring electrical appliances and position
your VM-312 away from moisture, excessive sunlight and dust
4 Your VM-312 Multi-Format Video/Audio Distributor
Figure 1 and Table 1 define the VM-312:
Figure 1: VM-312 Multi-Format Video/Audio Distributor
2
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your VM-312 Multi-Format Video/Audio Distributor
Table 1: VM-312 Multi-Format Video/Audio Distributor Features
# Feature Function
1 POWER Switch Illuminated switch for turning the unit ON or OFF
2 Y1 RCA Connector
3 PB CB 1 RCA Connector
4 PR CR 1 RCA Connector
5 Y2 RCA Connector
6 PB CB 2 RCA Connector
COMP OUT
7
8 Y RCA Connector
9 PB/CB RCA Connector
10
11 IN RCA Connector Connect to the composite video source
12 OUT 1 RCA Connector
13
14 IN 4p Connector Connect to the s-Video source
15 OUT 1 4p Connector
16
17 IN 3.5 Mini Jack Connector Connect to the unbalanced stereo audio source
18 OUT 1
19
20 12V DC +12 DC connector for powering the unit
PR CR 2 RCA Connector
IN
COMP
PR/CR RCA Connector
CV
OUT 2 RCA Connector
Y/C
OUT 2 4p Connector
3.5mm Mini Jack
OUT 2
Connector
AUDIO
Connect to the component video acceptor1
Connect to the component video acceptor 2
Connect to the component video source
Connect to the composite video acceptors (1 and 2)
Connect to the s-Video acceptors (1 and 2)
Connect to the unbalanced stereo audio acceptors
(1 and 2)
3
Connecting the VM-312 Multi-Format Distributor
5 Connecting the VM-312 Multi-Format Distributor
To connect the VM-312 as illustrated in the example in Figure 2, do the
following1:
1. Connect the component video source and acceptors as follows:
Connect a component video source (for example, a betacam video
player) to the Y, PB/CB, and PR/CR COMP IN RCA connectors
Connect the component video Y1, PB CB 1 and PR CR 1 COMP
OUT RCA connectors to a component video acceptor (for example, a
plasma display)
Connect the component video COMP OUT RCA connectors Y2, PB
CB 2 and PR CR 2, to a component video acceptor (for example, a
betacam video recorder)
2. Connect the composite video sources and acceptors, as follows:
Connect a composite video source (for example, a composite video
player ) to the CV IN RCA connector
Connect the CV OUT 1 RCA connector to a composite video
acceptor (for example, a composite video recorder)
Connect the CV OUT 2 RCA connector to a composite video
acceptor (for example, a composite video display)
3. Connect the s-Video sources and acceptors, as follows:
Connect an s-Video source (for example, an s-Video player ) to the
Y/C IN 4p connector
Connect the Y/C OUT 1 4p connector to an s-Video acceptor (for
example, an s-Video display)
Connect the Y/C OUT 2 4p connector to an s-Video acceptor (for
example, a projector)
4. Connect the AUDIO source and acceptors (not shown in Figure 2), as follows:
Connect an unbalanced stereo audio source to the IN 3.5mm mini jack
connector
Connect the 3.5mm mini jack OUT 1 connector to an unbalanced
stereo audio acceptor
Connect the 3.5mm mini jack OUT 2 connector to an unbalanced
stereo audio acceptor
5. Connect the 12V DC power adapter (not shown in Figure 2) to the power
socket and connect the adapter to the mains electricity.
1 You do not need to connect all the outputs
4
KRAMER: SIMPLE CREATIVE TECHNOLOGY
s-Video
Display
Projector
s-Video Player
Composite Video
Plasma
Audio Connections
Display
Connecting the VM-312 Multi-Format Distributor
are not Shown
Composite Video
Recorder
Betacam Video
Player
Betacam Video
Recorder
Figure 2: Connecting the VM-312 Multi-Format Distributor
Composite Video
Player
Display
5
Technical Specifications
6 Technical Specifications
Table 2 includes the technical specifications:
Table 2: Technical Specifications1 of the VM-312 Multi-Format Distributor
INPUTS: 1 composite video
OUTPUTS: 2 composite video
MAX. OUTPUT LEVEL: 1.8Vpp 21Vpp
BANDWIDTH (-3dB): 490MHz 450MHz 420MHz >100kHZ
DIFF. GAIN: 0.05%
DIFF. PHASE: 0.03 Deg.
K-FACTOR: <0.05%
S/N RATIO: 75dB 82dB
CROSSTALK (all
hostile):
COUPLING: DC Input: AC; output:
AUDIO THD + NOISE: 0.047% @ 1kHz
AUDIO 2nd HARMONIC: 0.001% @ 1kHz
POWER SOURCE: 12V DC, 130mA DC
DIMENSIONS: 21.5cm x 16.25cm x 4.36cm (8.45” x 6.39” x 1.72”), W, D, H.
WEIGHT: 1.2 kg. (2.65 lbs.) approx.
ACCESSORIES: Power cord
CV COMP (YUV) Y/C AUDIO
on an RCA
connector
1Vpp/75
on RCA
connectors
1Vpp/75
–52dB @ 5MHz, YUV into CV -45dB video into
1 component
video (Y, B-Y, and
R-Y) on RCA
connectors
1Vpp/0.7Vpp/75
2 component
video (Y, B-Y, and
R-Y) on RCA
connectors
1Vpp/0.7Vpp/75
1 s-Video on a 4p
connector
1Vpp/0.3Vpp/75
2 s-Video on 4p
connectors
1Vpp/0.3Vpp/75
1 stereo
unbalanced on a
3.5mm mini jack
connector
4dBm/50k
2 stereo
unbalanced on
3.5mm mini jack
connectors
4dBm/150
audio @ 15kHz
DC
1 Specifications are subject to change without notice
6
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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 seven 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 defe cts 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 dea ler. If you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agent s listed in the web s ite
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed.
3. Damage, deter ioration 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 costs 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 dat ed invoice (or a copy) must be prese nted as pr oof of warrant y 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 Kra mer for any effective products is li mited to the repair or replacement of the product at our option. Kramer
shall not be liable for:
1. Damage t o other property caused by defects in this product, damages based upon inconvenience, loss of use o f the product, loss
of time, commercial loss; or:
2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations o n 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”
7
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.
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
Caution
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-000167 REV 1
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