Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-50AN
1:5 Audio Distributor
Contents
1
Introduction 1
2
Getting Started 1
2.1
Quick Start 1
3
Overview 3
4
Your Audio VM-50AN 1:5 Distributor 4
5
Using Your VM-50AN 1:5 Audio Distributor 4
5.1
Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor 5
5.2
Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio Distributor 6
5.3
Connecting the VM-50AN as a 1:10 Audio Distributor 7
6
Technical Specifications 8
Contents
Figures
Figure 1: VM-50AN 1:5 Audio Distributor 4
Figure 2: Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor 5
Figure 3: Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio Distributor 6
Figure 4: Connecting the VM-50AN as a 1:10 Audio Distributor 7
Tables
Table 1: Front Panel VM-50AN 1:5 Audio Distributor Features 4
Table 2: Technical Specifications of the VM-50AN 1:5 Audio Distributor 8
i
Introduction
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 that are clearly defined
by function.
Congratulations on purchasing your Kramer VM-50AN 1:5 Audio
Distributor, which is ideal for the following typical applications:
Video/Audio duplication studios and retail outlets
Any audio system requiring multiple outputs from a single source
The package includes the following items:
VM-50AN 1:5 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
2.1 Quick Start
This Quick start chart summarizes the basic setup and operation steps.
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4:
Format/Standards Converters; GROUP 5: Twisted-Pair Solutions; 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 the Internet at this URL: http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
1
Getting Started
2
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
3 Overview
The Kramer VM-50AN is a high-performance distribution amplifier for
balanced and unbalanced stereo audio signals. It takes one balanced or
unbalanced stereo input and distributes the signal simultaneously to 10 stereo
outputs (five balanced and five unbalanced).
In addition, the VM-50AN:
Includes a balanced/unbalanced input selection button
Features left and right level (gain) controls
Operates as a stand-alone distributor, or as a companion to other Kramer
“50” series products like the VM-50V video DA, or the VM-50YC
s-Video DA
The VM-50AN is housed in a desktop sized enclosure. Two units can be rack
mounted side-by-side with the optional RK-1 adapter in a 1U rack space.
To achieve the best performance:
Connect 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)
Avoid interference from neighboring electrical appliances and position
your VM-50AN away from moisture, excessive sunlight and dust
Caution – No operator-serviceable parts inside unit.
Warning – Use only the Kramer Electronics input power
wall adapter that is provided with this unit1.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1 For example: model number AD2512C, part number 2535-000251
3
Your Audio VM-50AN 1:5 Distributor
4 Your Audio VM-50AN 1:5 Distributor
Figure 1 illustrates the front and rear panels of the VM-50AN. Table 1
defines the front and rear panels of the VM-50AN.
Figure 1: VM-50AN 1:5 Audio Distributor
Table 1: Front Panel VM-50AN 1:5 Audio Distributor Features
# Feature Function
1 POWER Switch Illuminated switch supplying power to the unit
2 INPUT MODE BAL/UNBAL Button When released, selects the balanced stereo audio input
3 RIGHT LEVEL Trimmer Adjusts1 the right output signal level
4 LEFT LEVEL Trimmer Adjusts1 the left output signal level
5 INPUT 3.5mm Mini Plug Connector Connects to the unbalanced audio source
6 INPUT Terminal Block Connector Connects to the balanced audio source
7 OUT 3.5mm Mini Plug Connector Connects to the unbalanced audio acceptor (from 1 to 5)
8 OUT Terminal Block Connector Connects to the balanced audio acceptor (from 1 to 5)
9 12 VDC 200mA +12V DC connector for powering the unit
when pushed in, selects the unbalanced stereo audio
5 Using Your VM-50AN 1:5 Audio Distributor
This section describes how to connect the VM-50AN as:
A balanced stereo 1:5 audio distributor, see section 5.1
An unbalanced stereo 1:5 audio distributor, see section 5.1
A 1:10 audio distributor, see section 5.3
1 Insert a screwdriver into the small hole and carefully rotate it, trimming the appropriate OUTPUT level
4
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using Your VM-50AN 1:5 Audio Distributor
5.1 Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor
To connect1 and operate the VM-50AN as a balanced stereo 1:5 audio
distributor, as the example in Figure 2 illustrates, do the following2:
1. Connect the balanced stereo audio source to the INPUT terminal block
connector.
2. Connect up to five balanced stereo audio acceptors to the OUT terminal
block connectors.
3. Connect the 12V DC power adapter to the power socket, connect the
adapter to the mains electricity, and then turn on the power switch.
4. Release the BAL/UNBAL INPUT MODE button to select balanced stereo
audio operation.
5. Adjust3 the right and/or left output signal level, if required.
Figure 2: Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor
1 Switch OFF the power on each device before connecting it to your VM-50AN. After connecting your VM-5 0AN, switch on
its power and then switch on the power on each device
2 You do not have to connect all the outputs
3 Insert a screwdriver into the hole and carefully rotate it, to trim the level
5
Using Your VM-50AN 1:5 Audio Distributor
5.2 Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio
Distributor
To connect1 the VM-50AN as an unbalanced stereo 1:5 audio distributor, as
the example in Figure 3 illustrates, do the following2:
1. Connect the unbalanced stereo audio source (for example, a PC sound
card) to the INPUT mini 3.5mm socket.
2. Connect up to five unbalanced stereo audio acceptors to the OUT mini
3.5mm sockets.
3. Connect the 12V DC power adapter to the power socket, connect the
adapter to the mains electricity, and then turn on the power switch.
4. Push in the BAL/UNBAL INPUT MODE button to select unbalanced
stereo audio operation.
5. Adjust3 the right and/or left output signal level, if required.
Figure 3: Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio Distributor
1 Switch OFF the power on each device before connecting it to your VM-50AN. After connecting your VM-5 0AN, switch on
its power and then switch on the power on each device
2 You do not have to connect all the outputs
3 Insert a screwdriver into the hole and carefully rotate it, to trim the level
6
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using Your VM-50AN 1:5 Audio Distributor
5.3 Connecting the VM-50AN as a 1:10 Audio Distributor
To connect the VM-50AN as a 1:10 audio distributor, as the example in
Figure 4 illustrates, do the following1:
1. Connect either (but not both simultaneously2) the:
Balanced stereo audio source to the INPUT terminal block connector
(and release the BAL/UNBAL INPUT MODE button to select
balanced stereo audio operation), or
Unbalanced stereo audio source to the INPUT mini 3.5mm socket (and
push in the BAL/UNBAL INPUT MODE button to select unbalanced
stereo audio operation)
2. Connect up to3 10 acceptors, as follows:
5 balanced stereo audio acceptors to the OUT terminal block
connectors, and
5 unbalanced stereo audio acceptors to the OUT mini 3.5mm sockets
3. Connect the 12V DC power adapter to the power socket, connect the
adapter to the mains electricity, and then turn on the power switch.
4. Adjust4 the right and/or left output signal level, if required.
Figure 4: Connecting the VM-50AN as a 1:10 Audio Distributor
1 Switch OFF the power on each device before connecting it to your VM-50AN. After connecting your VM-5 0AN, switch on
its power and then switch on the power on each device
2 Both formats cannot be connected to the machine at the same time, as they share some of the input connections
3 Outputs may be connected or left unconnected
4 Insert a screwdriver into the hole and carefully rotate it, to trim the level
7
Technical Specifications
6 Technical Specifications
Table 2 includes the technical specifications.
Table 2: Technical Specifications1 of the VM-50AN 1:5 Audio Distributor
INPUTS:
OUTPUTS:
MAX. OUTPUT LEVEL: >24dBm
BANDWIDTH: >100kHz; fully loaded
S/N RATIO: 84dB, unweighted
CONTROLS: Level (for right and left): 0.4dB to 9.5dB
COUPLING: Input: AC; Output: DC
AUDIO THD + NOISE: 0.022% @1kHz, Balanced Output
AUDIO 2nd HARMONIC: 0.002% @1kHz, Balanced Output
POWER SOURCE: 12VDC 200mA
DIMENSIONS: 16.5cm x 12cm x 4.5cm (6.5” x 4.7” x 1.7”, W , D, H)
WEIGHT: 0.6kg (1.3lbs) approx.
ACCESSORIES: 12V DC power supply
OPTIONS: RK-1 19" rack adapter
1 balanced stereo +4dBm 50k on detachable terminal block connector
1 unbalanced stereo 1Vpp/50k on mini 3.5mm socket
5 balanced stereo +4dBm 50 on detachable terminal block connectors
5 unbalanced stereo +22dBm 470 on mini 3.5mm sockets
1 Specifications are subject to change without notice
8
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall
Except as below, this warranty covers all defects in materia l or workmanship in this product . The following are not covered
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site
initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
LIMI TED WARRANT Y
following terms.
HOW LONG IS THE WARRAN TY
Labor and parts are warranted for seven years from the date of the first customer purchase.
WHO IS PROTECT ED?
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Kramer
by the warranty :
1. Any product wh ich is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed, or on which the WARRANTY VOID
TAMPERED sticker has been torn,
IF reattached, removed or otherwise interfered with.
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
responsibility of the Kramer dealer from whom the product was purchased.
3. Shipping charges.
HOW YOU CAN G ET WARRANTY SERVIC E
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 dated invoice (or a copy) 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.
LIMI TATION OF IMPLIE D WARRAN TIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSIO N OF DAMAGES
not be liable for:
1. Damage to other property caused by defects in this product, damages based upon inconvenience, 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
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.
All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.
NOTE:
This equipment has been tested to determine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
Residential, commercial and light industry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
CFR-47: FCC* Rules and Regulations:
CAUTI ON!
generic emission standard.
Part 1:
Part 1: Residential, commercial and light industry environment".
Part 15: “Radio frequency devices
Subpart B Unintentional radiators”
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or
modifications to the unit without t he expressed approval of the manufacturer will void user authority to operate t he
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.
* FCC and CE approved using STP cable (for twisted pair products)
9
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
P/N:
2900-000050
Rev:
2
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-000050 REV 2
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