DISTRIBUTION AMPLIFIERS
MANUAL PART NUMBER: 400-0004-004
DA1804NT
1-IN, 4-OUT VIDEO DISTRIBUTION
AMPLIFIER
USER’S GUIDE
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DISTRIBUTION AMPLIFIERS
1.5 FCC NOTICE
PRECAUTIONS / SAFETY WARNINGS
1
·
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.
Please read this manual carefully before using your
DA1804NT and keep it handy for future reference.
These safety instructions are to ensure the long life
of your DA1804NT and to prevent fire and shock
hazards. Please read them carefully and heed all
warnings.
1.1 GENERAL
·
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
·
·
Qualified ALTINEX service personnel or its
authorized representatives must perform all
service.
Connect the unit to a properly rated supply
circuit.
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
instructions found herein, 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.
1.2 HANDLING
·
Handle the DA1804NT carefully. Dropping or
jarring can damage internal components.
·
For best results, place the DA1804NT 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 water or moisture. Do not place the
DA1804NT in direct sunlight, near heaters, or
heat-radiating appliances, or near any liquid.
Exposure to direct sunlight, smoke, or steam can
harm internal components.
·
Any changes or modifications to the unit not
expressly approved by ALTINEX, Inc. could void
the user’s authority to operate the equipment.
·
·
Do not pull the cables that are attached to the
DA1804NT.
To turn off the main power, be sure to remove
the cable from the power outlet. The power
outlet socket should be installed as near to the
equipment as possible and should be easily
accessible.
1.4 CLEANING
·
Clean only the connector area 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. Do not clean or touch
any component or PCB.
400-0004-004
2
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DISTRIBUTION AMPLIFIERS
ABOUT YOUR DA1804NT
2
TECHNICAL SPECIFICATIONS
3
Specifications are subject to change.
DA1804NT
1-In, 4-Out Video Distribution Amplifier
FEATURES/DESCRIPTION
GENERAL
DA1804NT
The DA1804NT is a 1-In, 4-Out Distribution
Amplifier designed to allow the connection of a
single video source to as many as four display or
recording devices.
Inputs
BNC female (1)
BNC female (4)
Outputs
NTSC, PAL, SECAM,
High Resolution
Monochrome
The DA1804NT can pass NTSC, PAL, and SECAM
composite video signals. It can also pass
high-resolution monochrome computer video, such
as grayscale signals used in medical imaging. The
DA1804NT can handle video signals with levels up
to 1.5 Vp-p.
Compatibility
Computer Video
Table 1. DA1804NT General
MECHANICAL
Material
DA1804NT
Gray 0.1” Al
Lexan
State-of-the-art technology gives the DA1804NT a
bandwidth of 350 MHz with a very flat frequency
response up to 200MHz. It also offers a differential
gain of 0.15% and a differential phase of 0.15
degrees.
Top Label
Height (inches)
Width (inches)
Depth (inches)
Weight (pounds)
T° Operating
T° Maximum
Humidity
1.0 in (25 mm)
4.6 in (117 mm)
3.5 in (89 mm)
0.4 lb (0.18 kg)
10°C-35°C
The DA1804NT Distribution Amplifier has a pre-set
gain of 0 dB; each output is completely
independent and can withstand shorts to ground.
Extremely rugged and compact, the DA1804NT fits
easily into tight spots. Using high-quality 75 ohm
coaxial cable, it can drive an NTSC signal 400 ft
(122 m) or more.
50°C
90% non-condensing
40,000 hrs
MTBF (calculations)
Table 2. DA1804NT Mechanical
ELECTRICAL
DA1804NT
Input Video Signal
Analog Signal
1.5 Vp-p max.
75 ohm
Impedance
Output Video Signal
Analog Signal
0 dB +/- 0.5 dB
75 ohm
Impedance
Frequency Compatibility
Video Bandwidth
Coupling
350 MHz @ -3 dB
DC
Power
External Adapter (included)
Power Consumption
9 VDC 500 mA
0.4 W max.
Table 3. DA1804NT Electrical
400-0004-004
3
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DISTRIBUTION AMPLIFIERS
PRODUCT DESCRIPTION
4
POWER/
SIGNAL LED
+9VDC
INPUT
VIDEO
INPUT
4 VIDEO
OUTPUTS
FEMALE BNC
FEMALE BNC
+9VDC
INPUT
POWER/
SIGNAL LED
VIDEO
INPUT
4 VIDEO
OUTPUTS
400-0004-004
4
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DISTRIBUTION AMPLIFIERS
APPLICATION DIAGRAMS
DIAGRAM 1: TYPICAL SETUP
5
DA1804NT
DIAGRAM 2: INTERNAL VIEW
OUTPUT
BNCs
OUT 1
OUT 2
OUT 3
OUT 4
INPUT
BNC
SIGNAL
DETECT
POWER
9VDC,500mA
POWER
P.S.
400-0004-004
5
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DISTRIBUTION AMPLIFIERS
INSTALLING YOUR DA1804NT
6
TROUBLESHOOTING GUIDE
8
Step 1. Connect one end of the power adapter
cable to the DA1804NT and the other to
the power outlet. The Power/Signal
Present LED on the side panel should be
on and red indicating the unit is
operational.
We have carefully tested and found no problems in
the supplied DA1804NT; however, we would like to
offer suggestions for the following:
8.1 POWER LED IS NOT ON
The Power/Signal Present LED should be on
and red when power is applied with no input
signal.
Step 2. Connect a coaxial cable from the video
source (VCR, Document Camera, etc.) to
the input connector of the DA1804NT.
Cause 1: There is no AC power.
Solution: Only use the external adapter
supplied with the DA1804NT. Verify
the adapter is plugged into a
working AC outlet and that the outlet
has power.
If the video source providing a video
image, the Power/Signal Present LED on
the DA1804NT should turn from red to
green indicating a valid signal is present.
Step 3. Connect the output connectors of the
DA1804NT to the display devices
(monitors or projectors) using coaxial
cables.
Cause 2: The adapter is not plugged into
the DA1804NT.
Solution: Verify the DC power plug coming
from the AC adapter is plugged all
the way into the DA1804NT.
Step 4. The images on the outputs of the
DA1804NT should be equivalent to the
input source signal.
Cause 3: The FPI100HR has a problem.
Step 5. Installation is complete. There are no
Solution: If there is AC power to the adapter
and the LED still does not turn on,
the DA1804NT or the power adapter
may require service. Please call
ALTINEX at (714) 990-2300.
further connections or settings required.
OPERATION
7
The DA1804NT requires no adjustments for
performance. Once set up, the DA1804NT will work
trouble-free without user intervention as long as
cables are attached properly and other technical
specifications are followed.
8.2 LED IS NOT GREEN
The Power/Signal Present LED should be on
and red when power is applied, but then turn
green when receiving a video signal.
Cause 1: There is no power.
Solution: If the LED is on and red indicating
power is present, reconnect the
computer's video output. If the LED
is still not green, see Cause 2.
Cause 2: There is no sync signal.
Solution: Verify the computer output is
operating correctly by connecting it
directly to the local monitor. If the
display is good, call ALTINEX at
(714) 990-2300.
400-0004-004
6
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DISTRIBUTION AMPLIFIERS
8.3 NO REMOTE IMAGE
ALTINEX POLICIES
9
Cause 1: The source has a problem.
9.1 LIMITED WARRANTY/RETURN POLICIES
Solution: Check the image on the local
monitor and verify the quality is
good. If the local image is good, see
Cause 2.
Please see the ALTINEX website at
www.altinex.com for details on warranty and
return policies.
9.2 CONTACT INFORMATION
ALTINEX, Inc.
Cause 2: Cable connections are incorrect.
Solution: Make sure that cables are
connected properly. Also, make sure
that the continuity and wiring are
good. If there is still no image, call
ALTINEX at (714) 990-2300.
592 Apollo Street
Brea, CA 92821 USA
TEL: 714 990-2300
TOLL FREE: 1-800-ALTINEX
WEB: www.altinex.com
E-MAIL: [email protected]
8.4 REMOTE IMAGE QUALITY IS POOR
Cause 1: The source has a problem.
Solution: Check the image on the local
monitor and verify the quality is
good. If the local image is good, see
Cause 2.
Cause 2 Poor signal transmission.
Solution: Check the cables for continuity and
make sure that connections are
wired properly to verify that there is
good signal transmission. We
recommend ALTINEX-made cables
for best results. If the image is still
not correct, call ALTINEX at
(714) 990-2300.
400-0004-004
7
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