NetLinx Programming of DXLink Receivers
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Hardware Reference Manual – DXLink™ Twisted Pair 4K Transmitters/Receivers
Aspect Ratio Options
Stretch
(to fit) – This option (default) scales the video to full screen size in both horizontal and vertical directions regardless of the
input aspect ratio. No data is cropped. However, the image may be distorted as needed to fill the screen. When Stretch is selected,
black bars are not added by the scaler. However, if an image has originated from a source device with either horizontal or vertical
black bars (e.g., letter box from a movie), the black bars will be considered as active video and will be included in the stretched
video.
Maintain (
aspect ratio) – This option maintains the incoming video’s aspect ratio, but will scale the image until the display fills
either horizontal or vertical direction first. If the vertical direction is filled first, then the video will have pillar box black bars on the
sides of the display. If the horizontal direction is filled first, then the video will have letter box black bars on the top and bottom of
the display.
Zoom
– This option maintains the input aspect ratio while zooming the image to fill the screen in all directions. Image data may be
lost on the top and bottom or to the left and right of the displayed image.
Anamorphic
– This option is used with anamorphic formatted video sources so that images appear correctly on the display.
DXLink Receiver Audio SEND_COMMANDs
DXLink Receiver Audio SEND_COMMANDs are sent to Port 6.
Audio SEND_COMMANDs (Receivers)
Command
Description
?AUDOUT_MUTE
Requests the setting for the Mute
preference of the audio from the
Receiver (Enable or Disable).
Syntax:
SEND_COMMAND <DEV>,"'?AUDOUT_MUTE'"
Example:
SEND_COMMAND dvRX,"'?AUDOUT_MUTE'"
Returns a COMMAND of the form:
AUDOUT_MUTE-<ENABLE|DISABLE>
AUDOUT_MUTE
Sets the Mute preference of the audio
from the Receiver to Enable (no
sound) or Disable.
Syntax:
SEND_COMMAND <DEV>,"'AUDOUT_MUTE-<ENABLE|DISABLE>'"
Example:
SEND_COMMAND dvRX,"'AUDOUT_MUTE-ENABLE'"
?AUDOUT_FORMAT
Requests the audio format on the
Receiver.
Syntax:
SEND_COMMAND <DEV>,"'?AUDOUT_FORMAT'"
Valid response:
format = HDMI, ANALOG, ALL
Example:
SEND_COMMAND dvRX,"'?AUDOUT_FORMAT'"
Returns a COMMAND of the form:
AUDOUT_FORMAT-<format>
AUDOUT_FORMAT
Sets the audio format on the Receiver
(default is ALL).
Syntax:
SEND_COMMAND <DEV>,"'AUDOUT_FORMAT-<format>'"
Valid response:
format = HDMI, ANALOG, ALL
Example:
SEND_COMMAND dvRX,"'AUDOUT_FORMAT-ANALOG'"