NetLinx Programming of DXLink Transmitters and Receivers
83
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
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.
Video SEND_COMMANDs (Receivers), continued
?VIDOUT_MUTE
Requests the setting for the
Mute preference applied to
the image from the Receiver
(Enable or Disable).
Syntax:
SEND_COMMAND <DEV>,"'?VIDOUT_MUTE'"
Example:
SEND_COMMAND dvRX,"'?VIDOUT_MUTE'"
Returns a COMMAND of the form:
VIDOUT_MUTE-<ENABLE|DISABLE>
VIDOUT_MUTE
Sets the Mute preference of
the image from the Receiver
to Enable (displays a blank
screen) or Disable.
Syntax:
SEND_COMMAND <DEV>,"'VIDOUT_MUTE-<ENABLE|DISABLE>'"
Example:
SEND_COMMAND dvRX,"'VIDOUT_MUTE-ENABLE'"
