Instruction manual

NetLinx Programming of DXLink Transmitters and Receivers
75
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
Aspect Ratio Options
Maintain (aspect ratio) – This option (default) 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.
Stretch (to fit) – This option 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.
Video SEND_COMMANDs (Receivers), continued
VIDOUT_TESTPAT
Sets the test pattern to
display (will not display if an
input signal is not present).
Note: The Scaling Mode
must be either Auto or
Manual; a test pattern cannot
display in Bypass.
Syntax:
SEND_COMMAND <DEV>,"'VIDOUT_TESTPAT-<pattern>'"
Variables:
pattern = NONE, Color Bar, Gray Ramp, SMPTE Bar, HiLo Trak,
Pluge, Cross Hatch (These options are “not” case sensitive.)
Use NONE to cancel a pattern and return to input.
Example:
SEND_COMMAND dvRX,"'VIDOUT_TESTPAT-Color Bar'"
?VIDOUT_MUTE
Requests the setting for the
Mute preference applied to
the image from the Receiver
(Enabled or Disabled).
Syntax:
SEND_COMMAND <DEV>,"'?VIDOUT_MUTE'"
Example:
SEND_COMMAND dvRX,"'?VIDOUT_MUTE'"
Returns a COMMAND string of the form:
"VIDOUT_MUTE-<ENABLED|DISABLED>"
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'"