Command/response table for rs-232 commands – Extron electronic IN1404XT User Manual
Page 61
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IN1404XT Video Scaler and Switcher • Programmer’s Guide
Command/Response Table for RS-232 Commands
Command
ASCII Command
Response
Additional description
(host to scaler)
(scaler to host)
Input selection
Select
a video and audio input
[CH
X1
]
[OK]
Select video and audio input
X1
.
Example:
[CH3]
[OK]
Select video and audio input 3.
View
input video selection
[CH?]
[
X1
]
Video input
X1
selected.
The CH? command code views the selected video input only. There is no
corresponding view audio input command.
Select
a video input
[CHV
X1
]
[OK]
Select video input
X1
.
Select
an audio input
[CHA
X1
]
[OK]
Select audio input
X1
.
Autoswitch mode
Autoswitch
mode on
[AS1]
[OK]
Scaler autoswitches to the
highest numbered input with an
active input. If no inputs are
active, input 1 is selected.
Manual input selection is not available, neither on the front panel nor via
RS-232 control.
Autoswitch
mode off
[AS0]
[OK]
Autoswitch mode off.
View autoswitch
mode
[AS?]
[
X2
]
View autoswitch mode status.
Seamless switch mode
1
.
Input 4 must be configured as passive. Turning seamless switch mode on
automatically configures input 4 as passive if necessary.
2
.
Turning seamless switch mode off does not reconfigure input 4.
3
.
When seamless switching is on; and you switch to input 1, 2, or 3; that
input is synced to the input 4 reference. The synced input 1, 2, or 3 is
termed the “channel in common”. Seamless switching only occurs
between the passive channel 4 input and the channel in common input.
Switching between input 4 and a non-common in channel input occurs
during the vertical interval of input 4. There is a slight delay without
blanking while the new input syncs to input 4 and becomes the new
channel in common input.
When you switch between two scaled inputs without going through input
4, the switch is not seamless. A brief blanking interval is seen on the
output.
Seamless
mode on
[SM1]
[OK]
Turn seamless mode on (and
configure input 4 as passive, if
necessary).
Seamless
mode off
[SM0]
[OK]
Turn seamless mode off.
View
seamless mode
[SM?]
[
X2
]
View seamless mode status.
Blue screen and video blank
Blue screen on
[BLANK3]
[OK]
Set the video output to blue.
Blue screen off
[BLANK2]
[OK]
Set the video output to either the
selected input 1 through 4 or the
blank screen (if enabled).
Video blank on
[BLANK1]
[OK]
Set the video output to blank.
Video blank off
[BLANK0]
[OK]
Set the video output to either the
selected input 1 through 4 or the
blue screen (if enabled).