Kramer Electronics, Ltd.
USER MANUAL
Model:
123Vxl
Differential Video Line Amplifier
Contents
i
Contents
1
Introduction 1
2
Getting Started 1
3
Overview 2
4
Your Differential Video Line Amplifier 2
5
Connecting Differential Video Line Amplifier Units 3
6
Technical Specifications 4
Figures
Figure 1: 123Vxl Differential Video Line Amplifier 2
Figure 2: Connecting 123Vxl Differential Video Line Amplifier Units 4
Tables
Table 1: 123Vxl Differential Video Line Amplifier Features 3
Table 2: Technical Specifications of the 123Vxl Differential Video Line Amplifier 4
Introduction
1
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 Kramer TOOLS 123Vxl
Differential Video Line Amplifier, we also offer excellent single-ended
distribution amplifiers, switchers and matrices, presentation processors,
interfaces, remote controllers and computer-related products. Congratulations
on purchasing your Kramer 123Vxl Differential Video Line Amplifier. This
product 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 3 distant monitors
The package includes the following items:
123Vxl Differential Video Line Amplifier
Power adapter (12V DC Input)1
This user manual2
Kramer concise product catalog/CD
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 As an option, you can purchase the Kramer VA-50P 6 Port Universal 12-Volt Power Supply, enabling you to supply power
to up to 6 Kramer devices that require 12VDC
2 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com/manuals.html
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com (click “Cables and Connectors”
in the Products section)
Overview
KRAMER ELECTRONICS, LTD.
2
3 Overview
The high performance 123Vxl Differential Video Line Amplifier splits an input
source to 3 identical outputs. In particular, the 123Vxl:
Uses 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
Comes with an extra wide bandwidth of 425 MHz
Includes recessed gain and equalization trimmer controls to compensate
for signal losses inherent in long cable runs
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
Positioning your 123Vxl Differential Video Line Amplifier in a location
free from moisture and away from excessive sunlight and dust
4 Your Differential Video Line Amplifier
Figure 1 and Table 1 define the 123Vxl Differential Video Line Amplifier:
Figure 1: 123Vxl Differential Video Line Amplifier
Connecting Differential Video Line Amplifier Units
3
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 a video acceptor
3 OUT 2 BNC Connector Connects to a video acceptor
4 OUT 3 BNC Connector Connects to a video acceptor
5 CV IN BNC Connector Connects to the video source
6
TERM Hi-Z / 75 Switch Pushing in selects 75, releasing selects Hi-Z1
7 LOOP BNC Connector For looping to increase output availability2
8 ON LED Illuminates when receiving power
9 GAIN Trimmer Adjusts3 the output signal level for outputs 1, 2 and 3
10 EQ. Trimmer Adjusts3 the cable compensation equalization level
5 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 2 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, respectively4.
3. Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on each unit to
the appropriate video acceptors5, 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).
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
4 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
5 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
Technical Specifications
KRAMER ELECTRONICS, LTD.
4
5. Adjust the output signal level and/or cable compensation equalization
level on each unit, if required.
Figure 2: Connecting 123Vxl Differential Video Line Amplifier Units
6 Technical Specifications
Table 2: Technical Specifications1 of the 123Vxl Differential Video Line Amplifier
Input:
1 video (CV IN), differential, 1Vpp / 75, on a BNC type connector
1 video (LOOP), differential, 1Vpp / 75, on a BNC type connector
Outputs:
3 video, 1Vpp / 75 on BNC type connectors
Video Bandwidth: 425 MHz -3dB
Coupling: AC
Diff. Gain: 1.33%
Diff. Phase: 0.1 Deg
S/N Ratio: 62.6dB
K-Factor: <0.05%
Max. Video Output: 2 Vpp
Power Source: 12 VDC, 80mA
Dimensions: 12cm x 7.5cm x 2.5cm (4.7" x 2.95" x 0.98"), W, D, H.
Weight: 0.3 kg (approx.), (0.66 lbs.)
Accessories: Power supply, mounting bracket
Options: 19" rack adapters RK-T1, RK-T3
1 Specifications are subject to change without notice
5
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 agents 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 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 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.
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 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 a n
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);
generic emission standard.
Part 1: Residential, commercial and light industry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
Part 1: Residential, commercial and light industry environment".
CFR-47: FCC Rules and Regulations:
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
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.
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-001031 REV 2
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com.
Updates to this user manual may be found at
http://www.kramerelectronics.com/manuals.html.
We welcome your questions, comments and feedback.
Loading...