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DISTRIBUTION AMPLIFIERS
7
FREQUENTLY ASKED QUESTIONS 9
No: Question Answer
1 How many
feet of cable
can I use
with the
DA1226AT?
The outputs of the
DA1226AT allow signals to
be driven through 10 feet or
more of cable depending on
cable quality and the source
signal resolution.
2 Does the
DA1226AT
offer
buffered
outputs?
The DA1226AT offers all six
as individually buffered
outputs.
3 What is
meant by
buffered
output?
Buffered output means that
the output signal is isolated
from the input signal. 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.
4 Which type
of format
signal may I
pass through
the
DA1226AT?
The DA1226AT can pass
RGBHV, RGBS, RGsB,
Component Video, S-Vide,
and Composite Video by
using appropriate channels.
Video sources may be
passed through red, green,
and blue channels as well as
the horizontal and vertical
sync channels.
5 Can I use
CAT-5
cables
instead of
coaxial
cables?
You can’t use cat 5 cable
instead of coaxial cable,
because you will loose
quality of the receiving
signal. Since there is no
isolation of the signal in each
wire, the signals will interfere
with each other, so CAT-5 is
not recommended at all.
6 What is the
maximum
resolution of
input video
signal that
Resolution format describes
the number of pixels and
lines in a given video image,
as well as the rate at which
each frame is redrawn or
can pass
through
DA1226AT?
refreshed. Offering a
minimum video bandwidth of
350 MHz and typical
bandwidth close 450 MHz,
the DA1226AT allows very
high resolution video signals
(up to 1600x1200) to pass
without affecting image
quality.
TROUBLESHOOTING GUIDE 10
• Please make sure that the input amplitude of
the analog signal is less than 1.5V.
• Please make sure that sync levels at the
TTL level are between 1.4 Vp-p and 5 Vp-p.
• Please make sure that the highest quality of
cables is used. We recommend Altinex
made cables for best results.
• If a problem arises after continuous usage at
a higher voltage, higher temperature, higher
humidity, or at other extreme environmental
conditions, please correct the problem.
NOTE: The sync pulse voltage must be at
least 1.4 V for proper operation of the
distribution amplifier. If lover voltage is used,
contact Altinex for additional information.
• If there is no image on the display, make
sure that the source has a compatible
refresh rate and resolution with the display
by a direct connector of the source and
display.
• If the image quality is poor, then check the
input of the cable so that the source is
capable of driving signals to the DA1226AT
through the length of the cable.
• If you are using a HD-15 to 5-BNC cable to
connect a computer directly to the
DA1226AT and do not see the picture or
display use an interface to make the video
signal compatible to display.