DISTRIBUTION AMPLIFIERS
MANUAL PART NUMBER: 400-0007-003
PRODUCT REVISION: 1
DA1912SX
1-IN, 2-OUT RGBS
DISTRIBUTION AMPLIFIER
USER’S GUIDE
DISTRIBUTION AMPLIFIERS
INTRODUCTION
Thank you for purchasing DA1912SX 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 MOUNTING SAFETY GUIDELINES........2
INSTALLATION..................................................2
CLEANING.........................................................2
FCC / CE NOTICE .............................................2
ABOUT YOUR DISTRIBUTION AMPLIFIER.........3
TECHNICAL SPECIFICATION..............................3
DESCRIPTION OF DA1912SX..............................4
INPUT TERMINATION SWITCH........................4
VIDEO LEVEL SWITCH.....................................4
SYNC LEVEL SWITCH ......................................4
POWER .............................................................4
MOUNTING THE DA1912SX.............................4
This manual covers:
DA1912SX - 1-in, 2-out RGBS Distribution
Amplifier
APPLICATION DIAGRAM .....................................5
INSTALLING YOUR DISTRIBUTION
AMPLIFIER............................................................5
OPERATION .........................................................6
ACCESSORIES.....................................................6
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
DA1912SX Distribution Amplifier. Keep this manual
handy for future reference. These safety
instructions are to ensure the long life of your
DA1912SX 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 their
authorized representatives must perform all
service.
1.2 SAFETY GUIDELINES FOR THE RACKMOUNTING OF THE DA1912SX
• Maximum operating ambient temperature is 35
(degrees C).
• Never restrict the airflow through the device’s
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 DA1912SX
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
DA1912SX 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 DA1912SX Distribution Amplifier
carefully. Dropping or jarring can damage
internal components.
• Do not place heavy objects on top of the
DA1912SX. If the DA1912SX is to be
mounted, to a table or wall, use only Altinex
made mounting accessories, such as mini
mount-brackets (DA1295FC) and cables for
optimum setup.
• To turn off the main power, be sure to remove
the cord from power outlet. The power outlet
socket should be installed as near to the
equipment as possible, and should be easily
accessible.
• Do not pull power cord or any cable that is
attached to the DA1912SX Distribution
Amplifier.
• If the DA1912SX Distribution Amplifier is not
used for an extended, disconnect the power
cord from the power outlet.
1.4 CLEANING
• Unplug the DA1912SX 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 the 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
required to correct the interference at his own
expense.
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DISTRIBUTION AMPLIFIERS
• 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 DA1912SX Distribution Amplifier is designed
to allow the connection of one high resolution
RGsB or RGBS source to up two scan rate
compatible monitors or projectors.
Although designed to pass an RGBS signal format,
the DA1912SX can also pass RGsB, Component
Video (Y, R-Y, B-Y), S-Video (Y/C), and Composite
Video by using the appropriate channels. Video
sources must be passed through Red, Green,
and/or Blue channels. The sync channel is not
designed to pass video.
The DA1912SX Distribution Amplifier is a state-ofthe-art product with a video bandwidth of 350 MHz,
enabling it to remain transparent to the video signal
passing through it. Each output is individually
buffered and is not affected by other output
loading.
The DA1912SX accepts one input and offers up to
two outputs. Compensation for cable loss is
automatically made for distances up to 100 feet
when set normally, though the DA1912SX can
drive signals through longer runs depending on
source signal resolution and cable quality.
The DA1912SX is supplied with a 9V 500mA
External Power Adapter.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION DA1912SX
GENERAL
Inputs
Input Connector 4 BNC Female
Outputs
Output Connectors Two 4 BNC Female
Compatibility
High resolution RGBS,
RGsB and RsGsBs,
Component, S-Video
and Composite Video
Table 1. DA1912SX General
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MECHANICAL DA1912SX
Width (inches) 4.56in (116mm)
Height (inches) 3.50in (89mm)
Depth (inches) 0.94in (24mm)
Weight (pounds) 0.6lbs (0.27kg)
Ship Weight (pounds) 2.0lbs (0.91kg)
Material 0.1” Al
Finish Gray
Top Panel Lexan
T° Operating 10°C-35°C
T° Maximum 50°C
Humidity
MTBF (calculations) 40,000 hrs
90% non-condensing
Table 2. DA1912SX Mechanical
ELECTRICAL DA1912SX
Input Video Signal
Analog Signal 1.5V p-p max
Impedance 75 Ohms
Input Sync Signal
Horizontal, Vertical, & C-Sync TTL(+/-)
Sync on Green -0.3V
Impedance 10 k Ohms
Output Video Signal
Analog Signal 1.0V p-p/0.7V p-p
Impedance 75 Ohms
Output Sync Signal
Composite Sync TTL(+/-)
Sync on Green -0.3V
Impedance 22 Ohms
Frequency Compatibility
Typical Video Bandwidth 380 MHz
Minimum Video Bandwidth 350 MHz
Rise/Fall Time (ns) 1.4
Gain Default Setting 1.05
Cross-talk
Coupling
Power
External Power 9V 500mA external
Power Consumption
-40dB @10 MHz
AC
adapter (included)
4 watts max.
Table 3. DA1912SX Electrical
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DESCRIPTION OF DA1912SX 4
DISTRIBUTION AMPLIFIERS
4.1 INPUT TERMINATION SWITCH
The Input Termination Switch is normally set to
the ON position and provides 75 Ohms
termination for the Red, Green, and Blue
channels. By setting this switch in the OFF
position and using BNC "T" connectors, the input
may be looped to another DA1912SX, to a local
monitor, or to another piece of equipment, if
desired.
4.2 VIDEO LEVEL SWITCH
The Video Level Switch can be set to either the
standard 0.7V output or to 1.0V output. When the
switch is set in the 1.0V output position, this
provides approximately a 35% increase in video
signal level. This can be used in installations
where cable runs exceed 100 feet. It is not
recommended that this switch be set in the 1.0V
position for shorter cable lengths as the increased
level may reduce the life of CRT displays if they
are overdriven.
4.3 SYNC LEVEL SWITCH
The Sync Level Switch allows the DA1912SX to
output a Sync Level of either 2V p-p or 4V p-p.
This switch should normally be set in the 4V
position. Some older display equipment may
require a sync level of 2V in which case this switch
may be used, but this would be rare.
4.4 POWER
The DA1912SX requires the use of a 9V 500mA
power supply, which is included with the unit. A
variety of different power supplies are available for
international use.
4.5 MOUNTING THE DA1912SX
To mount the DA1912SX, Altinex offers "L" shape
mini-brackets, the DA1295SX, which provides
wings on either side of the unit, allowing it to be
installed on a rack plate, furniture, or a wall.
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APPLICATION DIAGRAM 5
DISTRIBUTION AMPLIFIERS
INSTALLING YOUR DISTRIBUTION
AMPLIFIER 6
Step 1. Make sure that the proper power supply is
being used with the unit. The use of an
incorrect power supply can result in
equipment damage not covered by
warranty.
Step 2. Connect the power cord to the unit and
plug it into the power outlet. The power
indicator LED on the front panel will light.
This indicates that the unit is operational.
Step 3. Connect the high resolution RGsB or
RGBS source to the DA1912SX using
coaxial cable with BNC connectors,
making sure that the colors match
correctly. Then connect one or two
monitors or projectors to the output(s) of
the DA1912SX. The monitors or
projectors must be scan-rate compatible
with the source signal - the DA1912SX
does not affect scan rate.
Step 4. The Input Termination switch should
normally be ON unless the input is being
looped to another unit. If the output cables
are longer than 100 feet, consider using
the Video Level Switch to increase the
gain on the outputs of the DA1912SX.
The Sync Level switch should normally be
in the 4V position.
Step 5. If the image is less than perfect, check all
the connections. The unit is very reliable
and seldom will be the cause of
malfunction. Poor quality cables may
often degrade the performance of the
product. Make sure that the cables used
are coaxial cables and that all pins are in
good condition.
CONGRATULATIONS! YOU ARE DONE.
If you experience any problems, please call
1-800-258-4623 or 1-714-990-2300 for
international calls.
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DISTRIBUTION AMPLIFIERS
OPERATION 7
The settings of the DA1912SX Distribution
Amplifier can be adjusted using Input Termination,
Video Level, and Sync Level switches as described
in Section 4. There are no other adjustments
necessary to operate the unit. The DA1912SX will
operate successfully as long as cables are
attached properly and other technical specifications
are followed.
ACCESSORIES 8
Model No. Description
RACK MOUNTING BRACKETS
DA1295SX
PS5502US
PS5512UK
PS5522AU
PS5532GR
PS5542JP
CB4100MR
CB4103MR
CB4106MR
CB4112MR
CB4125MR
CB4150MR
CB4175MR
CB41100MR
CB41150MR
CB4300MR
CB4306MR
CB4312MR
CB4325MR
CB4350MR
CB4375MR
CB43100MR
CB43150MR
Rack/Wall/Furniture Mount Minibrackets (2-"L" shaped brackets)
POWER SUPPLIES
9V 500mA Power Supply for US
9V 500mA Power Supply for UK
9V 500mA Power Supply for Australia
9V 500mA Power Supply for Germany
9V 500mA Power Supply for Japan
4 BNC to 4 BNC COAXIAL CABLE
Bulk Cable 4 coaxes (500ft minimum)
3 feet, 4 BNC to 4 BNC coaxial cable
6 feet, 4 BNC to 4 BNC coaxial cable
12 feet, 4 BNC to 4 BNC coaxial cable
25 feet, 4 BNC to 4 BNC coaxial cable
50 feet, 4 BNC to 4 BNC coaxial cable
75 feet, 4 BNC to 4 BNC coaxial cable
100 feet, 4 BNC to 4 BNC coaxial cable
150 feet, 4 BNC to 4 BNC coaxial cable
4 BNC to 4 BNC COAX (Super High
Resolution)
Bulk Cable 4 coaxes (500ft minimum)
6 feet, 4 BNC to 4 BNC coaxial cable
12 feet, 4 BNC to 4 BNC coaxial cable
25 feet, 4 BNC to 4 BNC coaxial cable
50 feet, 4 BNC to 4 BNC coaxial cable
75 feet, 4 BNC to 4 BNC coaxial cable
100 feet, 4 BNC to 4 BNC coaxial cable
150 feet, 4 BNC to 4 BNC coaxial cable
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DISTRIBUTION AMPLIFIERS
FREQUENTLY ASKED QUESTIONS 9
No: Question Answer
1 How many
feet of cable
can I use
with the
DA1912SX
when the
Video Level
switch is set
in the 1V
position?
2 Can I use the
DA1912SX
power supply
to power 2
units at the
same time?
3 Are outputs 1
& 2 of the
DA1912SX
buffered?
4 Why is the
Sync level
switch so
important?
5 Why and
when should
I use the
Input
Termination
switch?
Compensation for cable loss
is automatically made for
distances up to100 feet
when set normally, though
the DA1912SX can drive
signals through longer runs
depending on the source
signal resolution and cable
quality.
It is not recommended since
one power supply is supplied
with each unit. Please
consider the PS5581SM, a
rack mount power supply.
The DA1912SX has two
individually buffered outputs.
The Sync Level Switch
allows the DA1912SX to
output a Sync Level of either
2V p-p or 4V p-p. This switch
should normally be set in the
4V position. Some older
display equipment may
require a sync level of 2V in
which case this switch may
be used, but this would be
rare.
The Input Termination
Switch is normally set to the
ON position and provides 75
Ohm termination for the
Red, Green, and Blue
channels. By setting this
switch in the OFF position
and using BNC "T"
connectors, the input may be
looped to another
DA1912SX, to a local
monitor, or to some other
piece of equipment, if
desired.
6 Why is the
7
Video Level
switch
important?
The Video Level Switch can
be set to either the standard
0.7V output or to 1.0V
output. When the switch is
set in the 1.0V output
position, this provides
approximately a
35% increase in video signal
level. This can be used in
installations where cable
runs exceed 100 feet. It is
not recommended that this
switch be set in the 1.0V
position for shorter cable
lengths as the increased
level may reduce the life of
CRT displays if they are
overdriven.
7
DISTRIBUTION AMPLIFIERS
TROUBLESHOOTING GUIDE 10
We have carefully tested and have found no
problems in the supplied DA1912SX unit; however,
we would like to offer the following suggestions:
• Please make sure that the input amplitude
levels are as follows:
1. Analog signal less than 1.5V.
2. Sync signal less than 0.3V.
• Please use Altinex supplied external Power
Supply/AC Adapter (9V, 500mA) only.
• Please check the settings of Sync Level, Video
Level, and Input Termination Switches.
• Please make sure that a high quality of cables
is used. We recommend Altinex made cables
for best results.
• If the problem shows up after continuous
usage at higher voltage, higher temperature,
higher humidity, or 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 meets your expectations. In the unlikely
event, that an Altinex product needs to be
returned please follow the policies below:
Altinex will accept product returns for a period of
30 days from authorized Altinex dealers. Products
must 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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