DISTRIBUTION AMPLIFIERS
MANUAL PART NUMBER: 400-0001-003
PRODUCT REVISION: 1
DA1902SX
1 RGBHV - IN, 2 VGA - OUT
DISTRIBUTION AMPLIFIER
USER’S GUIDE
DISTRIBUTION AMPLIFIERS
INTRODUCTION
Altinex appreciates your purchase of the
DA1902SX Distribution Amplifier. We are sure you
will find it a reliable and useful product.
Superior performance for the right price backed by
solid technical and customer support is what we
have to offer.
The product you are holding in your hands is
designed using state-of-the-art technology and is
superior to anything available on the market. You
will find this and our other products reliable, long
lasting, and simple to operate.
We are committed to providing our customers with
solutions to the most demanding audio-visual
installations at very competitive pricing.
We appreciate your selection of our products and
are confident that you will join the ranks of our
many satisfied customers throughout the world.
TABLE OF CONTENTS
Page
PRECAUTIONS / SAFETY WARNINGS ...............2
GENERAL..........................................................2
RACK MOUNT SAFETY GUIDELINES..............2
INSTALLATION..................................................2
CLEANING.........................................................2
FCC / CE NOTICE .............................................2
ABOUT YOUR DISTRIBUTION AMPLIFIER.........3
TECHNICAL SPECIFICATION..............................3
DESCRIPTION OF DA1902SX..............................4
INPUT AND OUTPUTS......................................4
APPLICATION DIAGRAM .....................................5
THE SERIAL DISTRIBUTION SYSTEM.............5
INSTALLING YOUR DISTRIBUTION
AMPLIFIER............................................................6
This manual covers:
DA1902SX – 1 RGBHV – in, 2 VGA - out
Distribution Amplifier
OPERATION .........................................................7
ACCESSORIES.....................................................7
FREQUENTLY ASKED QUESTIONS....................7
TROUBLESHOOTING GUIDE ..............................8
ALTINEX POLICY .................................................8
LIMITED WARRANTY........................................8
RETURN POLICY ..............................................8
CONTACT INFORMATION ................................8
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DISTRIBUTION AMPLIFIERS
PRECAUTIONS / SAFETY WARNINGS 1
Please read this manual carefully before using your
DA1902SX Distribution Amplifier. Keep this manual
handy for future reference. These safety
instructions are to ensure the long life of your
DA1902SX and to prevent fire and shock hazard.
Please read them carefully and heed all warnings.
1.1 GENERAL
• Unauthorized personnel shall not open the unit
since there are high-voltage components
inside.
• Qualified Altinex service personnel, or its
authorized representative must perform all
service.
1.2 SAFETY GUIDELINES FOR THE RACKMOUNTING OF THE DA1902SX
• Maximum operating ambient temperature is 35
(degrees C).
• Never restrict the air flow through the devices’
fan or vents.
• When installing equipment into a rack, distribute
the units evenly. Otherwise, hazardous
conditions may be created by an uneven
weight distribution.
• Connect the unit to a properly rated supply
circuit.
• Reliable Earthing (Grounding) of Rack-Mounted
Equipment should be maintained.
1.3 INSTALLATION
• For best results, place the DA1902SX
Distribution Amplifier on a flat, level surface in a
dry area away from dust and moisture.
• To prevent fire or shock, do not expose this unit
to rain or moisture. Do not place the DA1902SX
Distribution Amplifier in direct sunlight, near
heaters or heat radiating appliances, or near
any liquid. Exposure to direct sunlight, smoke,
or steam can harm internal components.
• Handle the DA1902SX Distribution Amplifier
carefully because dropping or jarring can
damage internal components.
• Do not place heavy objects on top of the
DA1902SX. If the DA1902SX is to be mounted
to a table or wall, use only Altinex made
mounting accessories, such as mount minibrackets DA1295SX and cables for optimum
setup.
• To turn off the main power, be sure to remove
the cord from the power outlet. The power
outlet socket should be installed as close to the
equipment as possible, and should be easily
accessible.
• Do not pull the power cord or any cable that is
attached to the DA1902SX Distribution
Amplifier.
• If the DA1902SX Distribution Amplifier is not
used for an extended period, disconnect the
power cord from the power outlet.
1.4 CLEANING
• Unplug the DA1902SX power cord before
cleaning. Clean surfaces with a dry cloth. Never
use strong detergents or solvents, such as
alcohol or thinner. Do not use a wet cloth or
water to clean the unit.
1.5 FCC / CE NOTICE
• This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired
operation.
• This equipment has been tested and found to
comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide
reasonable protection against harmful
interference when the equipment is operated in
a commercial environment. This equipment
generates, uses, and can radiate radio
frequency energy and, if not installed and used
in accordance with the instruction manual, may
cause harmful interference to radio
communications. Operation of this equipment in
a residential area is likely to cause harmful
interference in which case the user will be
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DISTRIBUTION AMPLIFIERS
required to correct the interference at his/her
own expense.
• Any changes or modifications to the unit not
expressly approved by Altinex, Inc. could void
the user’s authority to operate the equipment.
ABOUT YOUR DISTRIBUTION AMPLIFIER 2
The DA1902SX is essentially a 1-in 2-out RGBHV
distribution amplifier, which is unique due to the
fact that it offers 5 BNC connectors for the inputs
and two 15-pin HD (VGA - type) connectors for the
outputs. This makes it perfect for special
applications where a RGBHV signal on 5 BNC
connectors is connected to two VGA type monitors.
If desired, the 15-pin HD connectors can also be
adapted to 5 BNC connectors using adapter
cables.
Though primarily designed for RGBHV format
signals, the DA1902SX is capable of passing
RGBS and RGsB signals as well. With its compact
design and very low cost, the DA1902SX makes for
an ideal distribution amplifier in either a small or a
large system.
In addition to being used for applications with two
displays, the DA1902SX also acts as an input
module for the Altinex Serial Distribution System.
This is a system, which uses the concept of
creating a high-resolution video bus in large
distribution applications with many displays. This
system provides a lower cost and a higher
performance alternative to the concept of feeding
home runs (a run of cable) to a single large
distribution amplifier. In the Serial Distribution
System, the DA1902SX is the starting point of the
bus, which feeds up to thirty output modules
(DA1904SX), through its 15-pin HD connectors
with VGA type cables.
TECHNICAL SPECIFICATION 3
FEATURES/DESCRIPTION DA1902SX
GENERAL
Inputs
Input Connector 5 BNC Female
Outputs
Output Connectors Two15-pin HD Female
Compatibility
High Resolution
RGBHV, RGBS, RGsB
Table 1. DA1902SX General
MECHANICAL DA1902SX
Material 0.1” Al
Finish Gray
Top Panel Lexan
Height (inches) 3.00in (76mm)
Width (inches) 4.50in (114mm)
Depth (inches) 1.00in (25mm)
Weight (pounds) 0.4in (0.18kg)
Ship Weight (pounds) 2.0lbs (0.91kg)
T° Operating 10°C-35°C
T° Maximum 50°C
Humidity
MTBF (calculations) 40,000 hrs
90% non-condensing
Table 2. DA1902SX Mechanical
ELECTRICAL DA1902SX
Input Video Signal
Analog Signal 1.5V p-p max
Impedance 75 Ohms
Input Sync Signals
Horizontal, Vertical, & C-Sync TTL(+/-)
Sync on Green -0.3V
Impedance 10 k Ohms
Output Video Signals
Analog Signal Gain of 1.05 (+/-5%)
Fall/Rise Time (ns) 1.4
Impedance 75 Ohms
Output Sync Signals
Composite Sync TTL(+/-)
Sync on Green -0.3V
Impedance 22 Ohms
Frequency Compatibility
Typical Video Bandwidth 380 MHz
Minimum Video Bandwidth 350 MHz
Horizontal 15-200 kHz
1
2
and RsGsBs
3
Vertical 47-180 Hz
Power
External Power Adapter 9V 500mA
Table 3. DA1902SX Electrical
DESCRIPTION OF DA1902SX 4
DISTRIBUTION AMPLIFIERS
INPUT AND OUTPUTS
The outputs of the DA1902SX allow signals to be
driven through up to 100 feet of cable or more
depending on the cable quality and the signal
source resolution.
The DA1902SX may be used with a variety of
input cable types. Generally, 5 BNC RGBHV to
RGBHV cables will be used. If it is necessary to
adapt from a standard VGA output to the input of
the distribution amplifiers, it is also possible to use
a 15-pin HD to 5 BNC adaptor as an input cable
(MS8100 series adaptor cables).
PIN No. Input signals on 15-pin HD
female connector
1 Red
2 Green
3 Blue
4 No connection
5 No connection
6 Ground
7 Ground
8 Ground
9 No connection
10 Ground
11 No connection
12 No connection
13 Horizontal Sync
14 Vertical Sync
15 No connection
Table 1. The DA1902SX Outputs pin-out
4
APPLICATION DIAGRAM 5
DISTRIBUTION AMPLIFIERS
THE SERIAL DISTRIBUTION SYSTEM
In addition to functioning as a single distribution
amplifier, the DA1902SX may act as a building
block in the Altinex Serial Distribution System. The
Serial Distribution System provides a manner of
distributing a video signal to several displays in an
application where the displays are typically spread
a few distances apart. When numerous runs are
made from the displays back to a single
distribution amplifier at a centralized location, it is
known as the “homerun approach”. As an
alternative to the “homerun approach”, the Serial
Distribution System uses the concept of a video
bus to provide greater ease of installation and
greater flexibility.
In the Serial Distribution System, the DA1904SX
acts as an output module. Ordinarily, the source
signal is connected to the input of a DA1902SX
and this becomes the starting point for the bus.
The outputs are then connected to the output
modules, DA1904SX, which are usually located
at each display site. The output modules provide a
way in which the display can be fed while still
maintaining a video bus output, which can be
connected to several monitors. A maximum of 30
DA1904SX units and a total system length of 300
feet or less are recommended for optimum
performance. See the Serial Distribution System
on the following page for an example of the
manner in which the Serial Distribution System
can be applied.
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DISTRIBUTION AMPLIFIERS
INSTALLING YOUR DISTRIBUTION
AMPLIFIER 6
Step 1. Make sure that the correct power adapter
is connected to the unit. A red LED will
light to indicate that the unit is receiving
power.
Step 2. Connect the video output of the source
(computer or other high-resolution source)
to the input of the DA1902SX using a
short, high, quality coaxial-type cable. If
the source offers a VGA type 15-pin HD
connector, Altinex part # MS8102CA (6'
15-pin HD male to 5 BNC male) may be
used.
Step 3. Connect monitors or projectors to the
outputs of the DA1902SX using the
appropriate VGA type cables or adapter
cables. If the DA1902SX were being used
in the Serial Distribution System, the
outputs of the DA1902SX would typically
be connected to the units of the
DA1904SX by using VGA type cables
(Altinex CB3700 Series Cables).
Step 4. If the DA1902SX is being used in the
Serial Distribution System, make sure that
the end of the video bus is properly
terminated with a monitor or with a
termination plug. This would usually be
done on the loop end of the DA1904SX.
Step 5. Verify that the quality of the picture on all
displays is perfect. If you are not
receiving a signal, make sure that the
display is compatible with the resolution of
the computer graphics card.
CONGRATULATIONS! YOU ARE DONE.
If you experience any problems, please call
1-800-258-4623 or 1-714-990-2300 for
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DISTRIBUTION AMPLIFIERS
OPERATION 7
The DA1902SX will operate successfully as long as
the cables are attached properly and other
technical specifications are followed. There are no
other adjustments necessary to operate the unit.
ACCESSORIES 8
Model No. Description
RACK MOUNTING ACCESSORIES
DA1295RM
CB3703MR
CB3706MR
CB3715MR
CB3725MR
CB3750MR
CB3775MR
CB37100MR
CB37150MR
CB3903MR
CB3906MR
CB3915MR
CB3925MR
CB3950MR
CB3975MR
CB39100MR
CB39150MR
MS8102CA
MS8104CA
MS8105CA
MS8106CA
MS8112CA
MS8114CA
PC5502US
PS5503US
PS5512UK
PS5522AU
PS5532GR
PS5542JP
Mount mini-brackets (2 – “L” shape)
VGA MALE TO MALE CABLES (15PIN HD TO 15-PIN HD)
3 ft
6 ft
15 ft
25 ft
50 ft (Super High Resolution Coaxes)
75 ft (Super High Resolution Coaxes)
100 ft (Super High Resolution Coaxes)
150 ft (Super High Resolution Coaxes)
VGA MALE TO FEMALE CABLES
(15-PIN HD TO 15-PIN HD)
3 ft
6 ft
15 ft
25 ft
50 ft (Super High Resolution Coaxes)
75 ft (Super High Resolution Coaxes)
100 ft (Super High Resolution Coaxes)
150 ft (Super High Resolution Coaxes)
VGA TO RGB ADAPTOR CABLES
15-pin HD Male to 5 BNC Male, 6ft
15-pin HD Male to 5 BNC Male, 15ft
15-pin HD Male to 5 BNC Male, 50 ft
15-pin HD Male to 5 BNC Female, 6 ft
15-pin HD Female to 5 BNC Male, 6ft
15-pin HD Female to 5 BNC Male, 15ft
POWER ADAPTERS
9V 500mA Power Supply for US
9V 500mA Power Supply for US w/50 ft
wire
9V 500mA Power Supply for UK
9V 500mA Power Supply for Australia
9V 500mA Power Supply for Germany
9V 500mA Power Supply for Japan
FREQUENTLY ASKED QUESTIONS 9
No: Question Answer
1 What is a
Distribution
Amplifier?
2 What should
I have when I
use the
DA1902SX?
3 Are the
outputs of
the
DA1902SX
buffered?
4 What does
buffered
output
mean?
5 Which type
of format
signal may I
pass through
A Distribution Amplifier is a
device that allows you to
connect a single video
source to multiple display
devices, such as monitors or
projectors used in
presentation applications.
The DA1902SX offers 5
BNC connectors for the input
of the unit and two 15-pin
HD (VGA type) connectors
for the output. This makes it
perfect for special
applications where an
RGBHV signal on 5 BNC
connectors must be
connected to two VGA type
monitors. Many display
devices, which use a 15-pin
HD (VGA type) connector,
can only accept RGBHV
format signals. Make sure
that the capability of the
display equipment to be
used in the system is
compatible.
Yes, the DA1902SX has two
individually buffered 15-pin
HD outputs.
Buffered output means that
the output signal is isolated
from the input signal. That
is, the loaded output does
not affect the input, or any
other output on the device. A
buffered output may vary in
terms of the gain or peaking
adjustments made to the
video signal.
The DA1902SX can pass
high-resolution RGBHV,
RGBS, RGsB, and RsGsBs
format computer video
7
DISTRIBUTION AMPLIFIERS
the
DA1902SX?
signals.
TROUBLESHOOTING GUIDE 10
We have carefully tested and have found no
problems in the DA1902SX supplied unit; however,
we would like to offer the following suggestions:
• Make sure that the correct power adapter is
connected to the unit.
• Please make sure that the input amplitude
analog signal is less than 1.5V.
• Please use the Altinex supplied external
adapter (9V, 500mA).
• Please make sure that the proper quality of
cables is used. We recommend the Altinex
made cables for the best results.
• If a problem arises after continuous usage at
higher voltage, higher temperature, higher
humidity, at other extreme environmental
conditions, please correct the problem.
ALTINEX POLICY 11
11.1 LIMITED WARRANTY
Altinex warrants that its products and cables are
free from defects in materials under normal use
and service. This warranty is limited to repairing at
company’s factory any part or parts of the product,
which upon company’s examination shall disclose
to be, thus defective. Products considered
defective should be returned to company with
transportation charges pre-paid within 2 years (90
days for cables) from date of shipment to the
purchaser. The warranty is expressly instead of all
other warranties expressed or implied. Altinex
neither assumes nor authorizes any other person
to assume for it any other liability in connection
with the sale of the products. This warranty shall
not apply to any product that shall have been
repaired or altered outside of company’s factory in
any way so as, in its judgment, to affect its
stability or reliability, or that has been subject to
misuse, negligence or accident.
11.2 RETURN POLICY
It is very important to Altinex that you receive the
products that you have ordered and that this
product fulfills your need. In the unlikely event,
that an Altinex product needs to be returned
please follow the policy below:
Altinex will accept product returns for a period of
30 days from authorized Altinex dealers. Products
should be returned in an unopened package.
If a product has been opened, the restocking fees
will apply. For the restocking fee amount, please
contact an Altinex Sales Representative.
If the product is in your possession for more than
30 days, the restocking fees will apply.
Altinex will not accept any returns on cables, or
custom products.
If your product is in warranty and needs service,
contact the Altinex Sales Department for an RMA
(Return Material Authorization). Products returned
without an RMA number may experience a delay
in service.
If your product is out of warranty and needs
service, contact the Altinex Sales Department for
an RMA (Return Material Authorization). Products
returned without an RMA number may experience
a delay in service. The service charges will be
quoted to you before the actual repairs are done.
11.3 CONTACT INFORMATION
Sales Department
Phone: 714-990-2300
Fax: 714-990-3303
Accounting Department
Phone: 714-990-6088
Fax: 714-990-5778
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