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DISTRIBUTION AMPLIFIERS
7
7
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?
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.
2 Can I use the
DA1912SX
power supply
to power 2
units at the
same time?
It is not recommended since
one power supply is supplied
with each unit. Please
consider the PS5581SM, a
rack mount power supply.
3 Are outputs 1
& 2 of the
DA1912SX
buffered?
The DA1912SX has two
individually buffered outputs.
4 Why is the
Sync level
switch so
important?
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.
5 Why and
when should
I use the
Input
Termination
switch?
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
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.