SPECIAL APPLICATION
400-0430-001
7
INSTALLING YOUR DA203-101
6
Step 1.
Make sure that the correct power adapter
is connected to the unit. The
DA203-101
uses a 9V 1.1A power supply.
Step 2.
Connect the cables from the video source
(computer) to the appropriate input
channels.
Step 3.
Connect the audio source to the audio
input on the
DA203-101
using a standard
3.5mm plug.
Step 4.
Connect the output
channels to the
display device (monitor, projector, etc…).
Step 5.
Connect the balanced audio output to the
input of the speakers, amplifier or other
audio device.
Step 6.
Check the image quality on the display.
If the
DA203-101
is working to eliminate a
specific ground loop problem, make sure
that all visible interference has been
eliminated. If the problem persists, the
ground loop may involve more than just
the two pieces of equipment, which are
interconnected.
If the
DA203-101
is used for general
preventative measures, your image
should remain stable and interference
free. Due to potential changes in any
power/ground system, the
DA203-101
works to eliminate potential ground loop
interference problems.
Step 7.
Adjust the available settings for the best
image quality. The default settings are:
SYNC TH
= 50
RED GAIN
= 50
VIDEO GAIN = 50
GREEN GAIN = 50
MAIN EQ
=
0
BLUE GAIN
= 50
NOTE: Some monitors are very sensitive
to the sync settings. Start this
adjustment from the 50 position
and adjust the potentiometer
slowly allowing the monitor to
respond to the changes in sync
pulses.
OPERATION
7
The
DA203-101
will operate successfully as long
as cables are attached properly and other technical
specifications are followed.
The adjustments on the
DA203-101
Line Driver are
available to fine-tune the output image and to help
compensate for errors in picture quality, cable
quality, cable length and variations in equipment.
7.1 ADJUSTMENTS
SYNC TH
The SYNC THRESHOLD adjustment allows
changes to be made in the timing of the sync
pulses. Use caution when adjusting this
potentiometer since some monitors may lose
sync after only minor adjustments. Always start
this adjustment with the potentiometer set to the
50 position and make adjustment in small
increments.
MAIN EQ
The MAIN EQUALIZATION adjustment allows
compensation for very long cable runs or cables
that have higher than expected loss over the
length of the cable.
Set this potentiometer to
zero for short cable runs and as a starting point
for adjusting for long cable runs.
VIDEO GAIN
The VIDEO GAIN adjustment allows the output
levels on the red, green and blue outputs to be
adjusted above and below their input level. This
adjustment affects all three outputs equally.
Unity gain is achieved by setting all four of the
gain potentiometers to the 50 position.
RED, GREEN and BLUE GAIN
The RED, GREEN and BLUE GAIN adjustments
allow the output level on any of the red, green or
blue outputs to be adjusted above and below its
input level. Each adjustment affects only one
output level. Unity gain on an individual output
is achieved by setting its potentiometer, as well
as the VIDEO GAIN potentiometer, to the 50
position.
