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Captive Screw

Connecting

Captive screw balanced audio connector is an added feature on the Atlona HDMI Distribution Amplifier. The
Captive screw connectors allow you to cut cables down to a suitable length, reducing cable clutter while
providing a more reliable connection.
The captive screw connector ports have a contact bar that is adjusted to compress the wire against the top
contact plate. Use the screws at the top of the connector to compress the wire against the contact plate.
When connecting a cable to the audio captive screw connector it is important that the wires are correctly
terminated. The captive screw connector (see picture A) has a contact plate at the top and must have the
wire touch it for signal to pass. When wired correctly (see picture B) the signal will pass, incorrectly (see
picture C) no signal will pass.

Audio

Balanced Unbalanced

Clockwise Counter
Clockwise
Turn the screws clockwise to
raise the contact bar to the upper
contact plate and hold the wires
in place.
Turn the screws counter clockwise
to lower the contact bar to release
the wires.

ABC

Display Learned EDID Color Space Color Depth Audio Result
DVI only DVI RGB 8 bit No Video ok, no audio
DVI + HDMI DVI RGB 8 bit No Video ok, no audio
DVI + HDMI HDMI YUV 12 bit (up to) Yes DVI won’t work
HDMI only HDMI YUV 12 bit (up to) Yes Everything works

DVI

The HDDA is compatible with a combination of DVI and HDMI interfaces. Please use the EDID learn
table below for the best compatibility.
The HDDA supports two different types of audio
terminations: balanced and unbalanced. To be sure which to
use, refer to the manual for the connected device.
Balanced audio left and right connections consist of a
negative, a positive, and a ground.
Note: Jacket colors may vary by cable manufacturer, be sure
to use the same pin out on the left as on the right or audio
performance may be undesirable.
Unbalanced audio consists of a positive and a ground for left
and right connections.
With pre-stripped wires the AT-LC-CS-2CH-2M (purchase
separately at atlona.com) provides an easy to integrate
unbalanced audio connection. Refer to the picture on the right
for an example of a terminated unbalanced connection.
AT-LC-CS-2CH-2M
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