4-7IN1404XT 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)

Brightness

No video adjustments are available for the input 4 video signal when it is
configured as passive (unscaled).
Set a specific brightness value [BRG
X8
] [OK] Specify the brightness
adjustment.
Increment brightness value [BRG+] [OK] Increase the brightness setting by
one.
Decrement brightness value [BRG-] [OK] Decrease the brightness setting
by one.
Set brightness value to default [BRG@] [OK] Reset the brightness setting to its
factory default (128).
View the brightness value [BRG?] [
X8
]Show the brightness setting.

Contrast

No video adjustments are available for the input 4 video signal when it is
configured as passive (unscaled).
Set a specific contrast value [CON
X8
] [OK] Specify the contrast adjustment.
Increment contrast value [CON+] [OK] Increase the contrast setting by
one.
Decrement contrast value [CON -] [OK] Decrease the contrast setting by
one.
Set contrast value to default [CON@] [OK] Reset the contrast setting to its
factory default (128).
View the contrast value [CON?] [
X8
]Show the contrast setting.

RGB Gain

1. The RGB gain adjustment is available for RGBHV, RGBS, RGsB, and

progressive component video inputs only.

2. No video adjustments are available for the input 4 video signal when it is

configured as passive (unscaled).
Set a specific red gain value [RED
X8
] [OK] Specify the red gain adjustment.
Increment red gain value [RED+] [OK] Increase the red gain setting by
one.
Decrement red gain value [RED-] [OK] Decrease the red gain setting by
one.
Set red gain value to default [RED@] [OK] Reset the red gain setting to its
factory default (128).
View the red gain value [RED?] [
X8
]Show the red gain setting.
Set a specific green gain value [GRN
X8
] [OK] Specify the green gain
adjustment.
Increment green gain value [GRN+] [OK] Increase the green gain setting by
one.
Decrement green gain value [GRN-] [OK] Decrease the green gain setting
by one.
Set green gain value to default [GRN@] [OK] Reset the green gain setting to its
factory default (128).
View the green gain value [GRN?] [
X8
]Show the green gain setting.
Set a specific blue gain value [BLU
X8
] [OK] Specify the blue gain adjustment.
Increment blue gain value [BLU+] [OK] Increase the blue gain setting by
one.
Decrement blue gain value [BLU-] [OK] Decrease the blue gain setting by
one.