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DISTRIBUTION AMPLIFIERS
7
FREQUENTLY ASKED QUESTIONS 9
No: Question Answer
1 What is a
Distribution
Amplifier?
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.
2 When should I
use the
DA1206RM?
In some cases, you need a
non-simultaneous
connection of a single C-
Video source or a single S-
Video source to as many
as six different display or
recording devices.
3 Which signal
formats can be
passed
through the
DA1206RM?
The DA1206RM can pass
RGBS, RGsB, Component
Video (Y, R-Y, B-Y), S-
Video (Y/C), and
Composite Video by using
the appropriate analog
channels (Red, Green,
Blue).
4 When should I
use “+”
position of
Sync Polarity
switch?
By setting sync polarity
switch to (+) the signal is
processed as unchanged
and the sync polarity of the
output signal is matched
with the sync polarity of the
unit. By setting the sync
polarity to (-) the sync
polarity of the output is
changed to the opposite of
the input.
5 When should I
use the Sync
Level switch?
The SYNC LEVEL switch
has two positions 2V and
4V. Most often a 4V Sync
Level is used. This should
be considered as the
default setting. The 2V
setting allows compatibility
with some older equipment
that would be overdriven if
stronger signal is used.
6 What should I This provides
have when the
Video Level
switch is set in
the 1.0V
output
position?
approximately a 35%
increase in the video signal
level. This can be used in
installations where cable
runs exceed 150 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.
TROUBLESHOOTING GUIDE 10
We have carefully tested and have found no
problems in the supplied DA1206RM unit; however,
we would like to offer the following suggestions:
• Please make sure that the input amplitude
levels are as follows.
1. Analog signal is less than 1.5V.
2. Sync signal is less is than 0.3V.
• Please check the settings of the Sync level,
the Video level, and the Sync Polarity
Switches.
• Please make sure that the proper quality of
cables is used. We recommend Altinex made
cables for best results.
• If a problem arises after continuous usage at
higher voltage, higher temperature, higher
humidity, or at other extreme environmental
conditions, please correct the problem.