Kramer 123Vx1 User manual

Kramer Electronics, Ltd.
Preliminary
USER MANUAL
Model:
123Vxl
Differential Video Line Amplifier

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
3 Overview 2
3.1 Quick Start 3
4 Your Differential Video Line Amplifier 4
5 Connecting the 123Vxl Differential Video Line Amplifier 5
6 Connecting Differential Video Line Amplifier Units 6
7 Technical Specifications 7
Figures
Figure 1: 123Vxl Differential Video Line Amplifier 4
Figure 2: Connecting the 123Vxl Differential Video Line Amplifier 5
Figure 3: Connecting 123Vxl Differential Video Line Amplifier Units 6
Tables
Table 1: 123Vxl Differential Video Line Amplifier Features 4
Table 2: Technical Specifications of the 123Vxl Differential Video Line Amplifier 7

Introduction
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 groups
1
that are clearly
defined by function.
Thank you for purchasing your Kramer TOOLS: 123Vxl Differential Video
Line Amplifier, which is ideal for:
Professional display systems that require long distance delivery of
high quality video
CCTV, medical, and sports applications
Retail stores, delivering an identical picture to up to three distant
monitors
The package includes the following items:
123Vxl Differential Video Line Amplifier
Power adapter (12V DC Input)
This user manual
2
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
3
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 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

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
2
3 Overview
The Kramer 123Vxl Differential Video Line Amplifier is a high-
performance line amplifier for composite or SDI video signals. It splits an
input source to 3 identical outputs and includes controls and circuitry to
compensate for signal losses and noise inherent in long cable runs.
In particular, the 123Vxl features:
Special differential amplifying circuitry that eliminates common
mode noise and hum problems commonly found in long video
lines, almost completely isolating the input from the outputs
High bandwidth of 425MHz (-3dB)
Gain and equalization trimmer controls to compensate for signal
losses inherent in long cable runs
A Kramer TOOLS enclosure and 12V DC supply voltage
To achieve the best performance:
Use only good quality connection cables
1
to avoid 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 that
may adversely influence signal quality and position your Kramer
123Vxl 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 unit
2
.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1 Available from Kramer Electronics on our Web site at http://www.kramerelectronics.com
2 For example, part number 22535-000251

Overview
3
3.1 Quick Start
This quick start chart summarizes the basic setup and operation steps.

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Differential Video Line Amplifier
4
4 Your Differential Video Line Amplifier
Figure 1 and Table 1 define the 123Vxl:
Figure 1: 123Vxl Differential Video Line Amplifier
Table 1: 123Vxl Differential Video Line Amplifier Features
# Feature Function
1 12V DC +12V DC connector for powering the unit
2 OUT 1 BNC Connector Connects to the video acceptor 1
3 OUT 2 BNC Connector Connects to the video acceptor 2
4 OUT 3 BNC Connector Connects to the video acceptor 3
5 CV IN BNC Connector Connects to the video source
6 TERM Hi-Z / 75Switch Pushing in selects 75, releasing selects Hi-Z
1
7 LOOP BNC Connector For looping to increase output availability
2
8 ON LED Illuminates when receiving power
9 GAIN Trimmer Adjusts
3
the output signal level for outputs 1, 2 and 3
10
EQ. Trimmer Adjusts
3
the cable compensation equalization level
1 For looping select Hi-Z
2 Connects to the CV IN connector on the next unit
3 Insert a screwdriver into the hole and carefully rotate it, to trim the level

Connecting the 123Vxl Differential Video Line Amplifier
5
5 Connecting the 123Vxl Differential Video Line Amplifier
To connect the 123Vxl, as the example in Figure 2 illustrates, do the
following:
1. Connect the video source (for example, a video player) to the CV IN BNC
connector.
2. Connect the CV OUT BNC connectors
1
—OUT 1, OUT 2 and OUT 3—to
the appropriate video acceptors (for example, video display 1, video
display 2, and video display 3).
3. If necessary, connect the LOOP BNC connector to the CV IN BNC
connector on an additional 123Vxl unit and release the TERM switch to
Hi-Z.
4. If required, adjust
2
the output signal level and/or cable compensation
equalization level.
5. Connect a 12V DC power adapter to the power socket and connect the
adapter to the mains electricity (not shown in Figure 2).
Figure 2: Connecting the 123Vxl Differential Video Line Amplifier
1 Not all outputs need to be connected. Only connect those required, and leave the others unconnected
2 Use a screwdriver to carefully rotate the trimmer, adjusting the appropriate level

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting Differential Video Line Amplifier Units
6
6 Connecting Differential Video Line Amplifier Units
You can connect up to five 123Vxl Differential Video Line Amplifier units,
to provide up to 15 outputs, as Figure 3 illustrates.
To connect up to five 123Vxl Differential Video Line Amplifier units:
1. Connect the video source to the CV IN BNC connector on the first unit.
2. Connect the LOOP BNC connector on each unit to the CV IN BNC
connector on the next unit in the line, respectively
1
.
3. Connect the OUT 1,OUT 2 and OUT 3 BNC connectors on each unit to the
appropriate video acceptors
2
, as required.
4. Release the TERM switch (selecting Hi-Z) on all units, except on the last
(fifth) unit. Push in the TERM switch on the last (fifth) unit (selecting
75).
5. If required, adjust
3
the output signal level and/or cable compensation
equalization level on each unit.
Figure 3: Connecting 123Vxl Differential Video Line Amplifier Units
1 Connect the LOOP BNC connector on the first unit to the CV IN BNC connector on the second unit. Connect the LOOP
BNC connector on the second unit to the CV IN BNC connector on the third unit. Connect the LOOP BNC connector on the
third unit to the CV IN BNC connector on the fourth unit. Connect the LOOP BNC connector on the fourth unit to the CV IN
BNC connector on the fifth unit. Leave the LOOP BNC connector on the fifth (last) unit unconnected
2 Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the first unit to the video acceptors 1, 2 and 3, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the second unit to the video acceptors 4, 5 and 6, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the third unit to the video acceptors 7, 8 and 9, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the fourth unit to the video acceptors 10, 11 and 12, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the fifth unit to the video acceptors 13, 14 and 15, respectively
3 Use a screwdriver to carefully rotate the trimmer, adjusting the appropriate level

Technical Specifications
7
7 Technical Specifications
Table 2 includes the technical specifications:
Table 2: Technical Specifications
1
of the 123Vxl Differential Video Line Amplifier
INPUTS: 1 looping video, differential, 1Vpp/75on a BNC connector
OUTPUTS: 3 video, 1Vpp/75on BNC connectors
MAX. OUTPUT LEVEL: 1.7Vpp
BANDWIDTH (-3dB): 425MHz
DIFF. GAIN: 0.5%
DIFF. PHASE: 0.3 Deg
K-FACTOR: <0.05%
S/N RATIO: 60.3dB
CONTROLS: Level: -1.8dB to +5.6dB, EQ.: 0 to +15dB @5.8MHz, 75termination switch
COUPLING: AC
POWER SOURCE: 12V DC, 80mA
DIMENSIONS: 12cm x 7.5cm x 2.5 cm (4.7” x 2.95” x 0.98”) W, D, H
WEIGHT: 0.3 kg. (0.67 lbs.) approx.
ACCESSORIES: Power supply, mounting bracket
OPTIONS: RK-3T 19" rack adapter
1 Specifications are subject to change without notice

KRAMER: SIMPLE CREATIVE TECHNOLOGY
8
LIMITED WARRANTY
WHO IS PROTECTED?
WHAT IS COVERED AND WHAT IS NOT COVERED
WHAT WE WILL PAY FOR AND WHAT WE WILLNOT PAYFOR
HOW YOU CAN GET WARRANTY SERVICE
LIMITATION OF IMPLIED WARRANTIES
EXCLUSION OF DAMAGES
CAUTION!
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
following terms.
Kramer
HOW LONG IS THE WA RRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
Only the first purchase customer may enforce this warranty.
We will pay labor and material expenses for covered items. We will not pay for the following:
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:
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.
This equipment has been testedto determine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
generic emission standard.
Residential, commercial and lightindustry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
Part 1: Residential, commercial and lightindustryenvironment".
CFR-47: FCC* Rules and Regulations:
Part 15: “Radio frequency devices
Subpart B Unintentional radiators”
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 agents listed in the Web site
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,
3. Damage, deterioration or malfunctionresulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning or otheracts of nature
ii) Product modification, or failure to followinstructions 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
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 dealerfrom whom the product was purchased.
3. Shipping charges.
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.
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
1. Damage to other property caused by defects inthis product, damages basedupon 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
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.
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.
Usethe supplied DC power supply to feed power to the machine.
Please use recommended interconnection cablesto connect the machine to other components.
IF reattached, removed or otherwise interfered with.
* FCC and CEapproved using STP cable (for twisted pair products)
NOTE:
Part 1:

Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: [email protected]
P/N: 2900-001031 REV 4
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.
Caution
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
PN:
2900- 001031
Rev:
4