Altinex Cat-5 Computer Video Receiver DA1921SX User manual

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MANUAL PART NUMBER: 400-0155-001
PRODUCT REVISION: 0
DA1921SX
CAT-5 COMPUTER VIDEO
RECEIVER USER’S GUIDE

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TABLE OF CONTENTS
Page
PRECAUTIONS / SAFETY WARNINGS .............. 2
GENERAL......................................................... 2
INSTALLATION................................................. 2
CLEANING........................................................ 2
FCC / CE NOTICE............................................. 2
ABOUT YOUR DA1921SX ................................... 3
TECHNICAL SPECIFICATIONS........................... 3
DESCRIPTION OF DA1921SX............................. 4
INPUT ............................................................... 4
OUTPUTS......................................................... 4
LED INDICATOR............................................... 5
MOUNTING THE DA1921SX ............................ 5
APPLICATION DIAGRAM .................................... 5
INSTALLING YOUR DA1921SX........................... 6
OPERATION ........................................................ 6
ACCESSORIES.................................................... 6
FREQUENTLY ASKED QUESTIONS................... 7
TROUBLESHOOTING GUIDE ............................. 7
ALTINEX POLICY................................................. 8
LIMITED WARRANTY....................................... 8
RETURN POLICY ............................................. 8
CONTACT INFORMATION............................... 8

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PRECAUTIONS / SAFETY WARNINGS 1
Please read this manual carefully before using your
DA1921SX. Keep this manual handy for future
reference. These safety instructions are to ensure
the long life of your DA1921SX 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 RACK-
MOUNTING OF THE DA1921SX
•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 DA1921SX 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
DA1921SX 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
DA1921SX carefully. Dropping or
jarring can damage internal components.
•Do not place heavy objects on top of the
DA1921SX. If the DA1921SX is to be mounted
to a table or wall, use only ALTINEX-made
mounting accessories, such as the mount
mini-brackets MB1001 and cables for optimum
setup.
•To turn off the main power, be sure to remove
the adapter from the power outlet. The power
outlet socket should be installed as near to the
equipment as possible, and should be easily
accessible.
•Do not pull the adapter or any cable that is
attached to the DA1921SX.
•If the
DA1921SX is not used for an extended
period, disconnect the adapter from the power
outlet.
1.4 CLEANING
•Unplug the
DA1921SX (adapter or 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
required to correct the interference at his own
expense.

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•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 DA1921SX 2
The DA1921SX is a high-resolution 1-in 2-out
computer video amplifier/receiver, which converts
differential signals to single ended video signals
and distributes the source to large screen
projectors or other displays. The DA1921SX is
designed for use together with an ALTINEX CAT-5
UTP Computer Video Transmitter, such as model
no. DA1920SX. The DA1921SX receives computer
video signals over twisted pair CAT-5 UTP
(Category 5, 5e, 6) type cable.
The DA1921SX is compact and easy to use. It
offers a female RJ-45 input connector and two fully
buffered female 15-pin HD output connectors.
The DA1921SX can receive signal resolutions
between VGA and UXGA. Used together with an
ALTINEX CAT-5 Computer Video Transmitter and
properly adjusted with the built-in equalization
controls, the maximum cable distance is
approximately 500 feet/152 meters for VGA (640 x
480, 60 Hz refresh rate) and 250 feet/76.2 meters
for UXGA (1600 x 1200, 60 Hz refresh rate).
Please see the complete specifications for other
resolutions.
Note that all cables for the DA1921SX must be
ordered separately.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION DA1921SX
GENERAL
Inputs One
Input Connector RJ-45
Outputs Two
Local Monitor Connector 15-pin HD Female
Main Output Connectors 15-pin HD Female
Cable Distance Limitations
Signal Resolution Distance 640 x 480: 500ft/152m
800 x 600: 450ft/137m
1024 x 768: 400ft/122m
1280 x1024: 350ft/107m
1600 x 1200: 250ft/76m
Table 1. DA1921SX General
MECHANICAL DA1921SX
Material 0.1” Al
Finish ALTINEX Grey
Top Panel Lexan Overlay
Height (inches) 3.00in (76mm)
Width (inches) 4.50in (114mm)
Depth (inches) 1.00in (25mm)
Weight (pounds) 0.40lb (0.18kg)
Ship Weight (pounds) 2.4lbs (1.09kg)
T°Operating 10°C-35°C
T°Maximum 50°C
Humidity 90%non-condensing
MTBF (calculations) 40,000 hrs
Table 2. DA1921SX Mechanical
ELECTRICAL DA1921SX
Input Video Signal
Analog Signal Level Differential ±0.75V max
Impedance 50 Ohms
Input Sync Signal
Horizontal, Vertical, & C-Sync Differential ±1V
Impedance 50 Ohms
Output Video Signals
Analog Signal Level 1.5V p-p
Fall/Rise Time (ns) 2.0
Impedance 75 Ohms
Output Sync Signals
Horizontal Sync TTL (+/-)
Vertical Sync TTL (+/-)
Frequency Compatibility
Typical Video Bandwidth 350 MHz @ -3 dB
Minimum Video Bandwidth 300 MHz @ -3 dB
Horizontal 15-200 kHz
Vertical 47-180 Hz
Cable Equalization at Each
Output -3 dB @ 120 MHz
Coupling AC
Cross-talk -40 dB @ 10 MHz
Power
External Power Adapter 9V DC, 500 mA
Table 3. DA1921SX Electrical

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DESCRIPTION OF DA1921SX 4
4.1 INPUT
The input connector of DA1921SX is a RJ-45
connector, which connects the DA1921SX to the
DA1920SX using a CAT-5 cable. A longer input
cable may be used but lengths over 15 feet are
generally not recommended to preserve the signal
quality.
PIN No. Input signals on RJ-45 connector
1R-
2R+
3G-
4B-
5B+
6G+
7HOR-
8HOR+
Table 4. DA1921SX Input Signals
4.2 OUTPUTS
The DA1921SX has two outputs with 15-pin HD
female connectors. It allows the distribution of
video signals to two monitors. With equalization,
the DA1921SX sends signals through a VGA
cable as far as 400 feet away.
PIN No. Output signals on 15-pin HD female
connector
1Red
2 Green
3Blue
4IDBit4
5 Ground
6 Ground
7 Ground
8 Ground
9+5V
10 Ground
11 Ground
12 No Connection
13 Horizontal S
y
nc
14 Vertical S
y
nc
15 No Connection
Table 5. DA1921SX Output Signals

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4.3 LED INDICATOR
The DA1921SX offers a special LED on the front
panel that provides feedback to the user. When
power is connected to the DA1921SX, the LED will
turn red. When an active computer source is
connected to the DA1921SX, the LED will turn
Green, indicating that it is receiving a signal by
sensing the presence of the sync portion of the
signal.
4.4 MOUNTING THE DA1921SX
To mount the DA1921SX, ALTINEX offers optional
mount mini-brackets MB1001,which provide wings
on either side of the unit. The DA1921SX can be
installed on a rack plate, furniture, or a wall.
APPLICATION DIAGRAM 5

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INSTALLING YOUR DA1921SX 6
Step 1. Connect the 9V 500mA AC adapter’s
output plug to the DA1921SX’s power
input connector - 2.5 mm DC Jack. Verify
that a red LED is displayed in the top right
corner of the unit on the front panel.
Step 2. Remove the protective port covers.
Connect the video output from the
DA1920SX to the input connector on the
DA1921SX using the CAT-5 cable.
Step 3. Verify that the red LED on the face of the
unit has now turned green, indicating an
active source. If the LED is not green, the
DA1920SX may not be sending video
signals.
Step 4. Connect to output connectors one or two
monitors (as needed) using appropriate
VGA cable.
Step 5. Verify that the picture quality on Monitor 1
and Monitor 2 (connected to Output 1 and
Output 2 of the DA1921SX) is good. If
you are not receiving a signal, make sure
that the display is compatible with the
resolution of the computer graphics card.
Note: High levels of static discharge
under some conditions may shutdown the
unit. To reset the unit simply, disconnect
the input cable and reconnect it back.
OPERATION 7
There are no adjustments necessary to operate the
DA1921SX, except equalization according cable
length. The unit will operate successfully as long as
cables are attached properly and other technical
specifications are followed.
ACCESSORIES 8
Model No. Description
TERMINATION PLUGS/GENDER CHANGERS
MS8000TP 15-pin HD VGA termination plug
MS8144MG 15-pin HD (M) to 15-pin HD (M) gender
changer
MS8145MG 15-pin HD (F) to 15-pin HD (F) gender
changer
RACK MOUNTING BRACKETS
MB1001 Rack/Wall mount mini-brackets
INPUT
CABLES STANDARD HD-15 PIN VGA MALE TO MALE
CB3703MR 3 ft
CB3706MR 6 ft
CB3715MR 15 ft
CB3725MR 25 ft
CB3750MR 50 ft (Super High Resolution Coaxes)
CB3775MR 75 ft (Super High Resolution Coaxes)
CB37100MR 100 ft (Super High Resolution Coaxes)
CB37150MR 150 ft (Super High Resolution Coaxes)
OUTPUT
CABLES STANDARD HD-15 PIN VGA MALE TO FEMALE
CB3903HR 3 ft (For local monitor)
CB3906HR 6 ft (For local monitor)
CB3915HR 15 ft (For local monitor)
CAT-5
CB3950HR 50 ft (Super High Resolution Coaxes)
CB3975HR 75 ft (Super High Resolution Coaxes)
CB39100HR 100 ft (Super High Resolution Coaxes)
CB39150HR 150 ft (Super High Resolution Coaxes)
VGA TO RGB ADAPTER CABLES
MS8102CA 15 pin HD Male to 5 BNC Male, 6ft
MS8104CA 15 pin HD Male to 5 BNC Male, 15ft
MS8105CA 15-pin HD Male to 5 BNC Male, 50 ft
MS8106CA 15 pin HD Male to 5 BNC Female, 6 ft
MS8112CA 15 pin HD Female to 5 BNC Male, 6ft
MS8114CA 15 pin HD Female to 5 BNC Male, 15ft
POWER SUPPLIES
PS5502US 9V 500mA Power Supply for US
PS5512UK 9V 500mA Power Supply for UK
PS5522AU 9V 500mA Power Supply for Australia
PS5532GR 9V 500mA Power Supply for Germany
PS5542JP 9V 500mA Power Supply for Japan

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FREQUENTLY ASKED QUESTIONS 9
No: Question Answer
1How many
feet of cable
can I use with
the
DA1921SX?
Up to 400 feet of super high
resolution VGA cable for
output.
2Is the type of
input cable
important
when I use
the
DA1921SX?
Yes, use only CAT-5 cable
with a RJ-45 connector.
3May I use
coaxial cable
instead
ofCAT5
cable?
No, you can not use coaxial
cable instead of CAT-5
cable because the Output
signals are differential and
Output connector is RJ-45
for CAT-5 cable.
4May I use the
DA1921SX
power supply
to power
more than
one unit at a
time?
It is not recommended
since one power supply is
supplied with each unit.
Please consider the
PS5581SM, a rack mount
power supply.
5Does the
DA1921SX
pass DDC
signals/ID bits
between the
display and
computer?
Yes, because the
DA1920SX and the
DA1921SX can only work
together.
6What are the
resolutions of
input
computer
signals that
can pass
through the
DA1921SX?
1280x1024 – UXGA
1024x768 – XGA
800x600 – SVGA
640x480 – VGA.
TROUBLESHOOTING GUIDE 10
We have carefully tested and have found no
problems in the supplied DA1921SX unit; however,
we would like to offer the following suggestions:
•Please make sure that the amplitude of input
video differential signal is less than or equal to
0.75V .
•Please use ALTINEX supplied external AC
adapter (supplying 9V DC at 500mA).
•Please make sure that the proper cable quality
with coax conductors and Cat5 cable for video
channels is used. We recommend ALTINEX
made cables for best results.
•Please make sure that the outputs are
terminated properly and the cable run does not
exceed 800 feet for the main output RJ-45
connector.
•If a problem arises after continuous usage at
higher voltage, higher temperature, higher
humidity, or at other extreme environmental
conditions, please correct the problem.

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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 policy 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
ALTINEX, INC.
592 Apollo Street
Brea, CA 92821 USA
TEL: [phone]
TOLL FREE: 1-800-ALTINEX
WEB: www.altinex.com
E-MAIL: [e-mail]
FAX: [phone]