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4-9IN1404XT Video Scaler and Switcher • Programmer’s Guide
Command/Response Table for RS-232 Commands (Cont’d)
Command ASCII Command Response Additional description
(host to scaler) (scaler to host)
Gamma
1. Gamma adjustments are available only for interlaced component video,
S-video, and composite video inputs only.
2. The gamma adjustment is not available for the input 4 video signal when
it is configured as passive (unscaled).
Set a specific gamma value [GAM
X10
] [OK] Specify the gamma adjustment.
Increment gamma value [GAM+] [OK] Increase the gamma setting by
one.
Decrement gamma value [GAM-] [OK] Decrease the gamma setting by
one.
Set gamma value to default [GAM@] [OK] Reset the gamma setting to its
factory default (10).
View the gamma value [GAM?] [
X10
] Show the gamma setting.
Noise filter
1. Noise filter adjustments are available only for interlaced component
video, S-video, and composite video inputs only.
2. The noise filter adjustment is not available for the input 4 video signal
when it is configured as passive (unscaled).
Set a specific noise filter value [NOISE
X11
] [OK] Specify the noise filter
adjustment.
Increment noise filter value [NOISE+] [OK] Increase the noise filter setting by
one.
Decrement noise filter value [NOISE-] [OK] Decrease the noise filter setting
by one.
Set noise filter value to default [NOISE@] [OK] Reset the noise filter setting to its
factory default (9).
View the noise filter value [NOISE?] [
X11
] Show the noise filter setting.
Comb/trap filter
The comb or trap filter setting is available only for composite video inputs
only on input 1 and input 2 only.
Select comb filter or trap filter [CTF
X12
] [OK] Select the comb filter, trap filter,
or neither.
View the selected filter [CTF?] [
X12
] Show the filter selection.
Horizontal tracking
The horizontal tracking adjustment is available for interlaced component
video, S-video, and composite video inputs only.
Set horizontal tracking [HTK
X13
] [OK] Set horizontal tracking rate.
View horizontal tracking [HTK?] [
X13
] View horizontal tracking rate.
Input labels
Set input label status [LBL
X14
] [OK] Set the label feature (displayed
upon input selection) to
X14
.
Set custom label [LBL=
X15
] [OK] Set the label to the custom
contents
X15
.
Example: [LBL=DVD #1] [OK] Display the label “DVD #1”
when this input is selected, if
X14
is on (1) or momentary (2).