Operation, cont’d
Use the Menu 
button to highlight “Yes” and press the Enter (and save) button to reset the 
button to highlight “No” and press the Enter button to exit the screen without resetting the
System Information screen
The System Information screen is an informational display only that shows:
•The selected input number
•The selected input’s sync format (RGBHV, RGBS, and so on) and resolution
•The selected input’s horizontal and vertical rates
•The output’s resolution
•The output’s horizontal and vertical rates
•The firmware version
Enabling seamless switching
When the scaler is in seamless switching mode, it uses input 4’s passive (unscaled) synchronization signals as a reference for locking the output video signal. For seamless switching to work properly, the following three conditions must be true:
•Input 4 must be set to be passively output without scaling.
•The output’s resolution, refresh rate, and sync format must be set to those of the channel 4 input.
•The Input 4 reference must be within ±2% of the selected output resolution and refresh rate.
When input 4 is passive, the scaler performs no decoding, scaling, or video adjustment functions. Blank and freeze functions, and
Setting up seamless switching
Set the IN1404XT to seamlessly switch between scaled inputs on 1, 2, or 3 (RGB, component,
1. | Apply the RGBHV, RGBS, or RGsB reference to input 4. |
2. | Press Menu and then select Output>Resolution, select the same resolution as |
| the input 4 reference signal, and press Enter (and save). |
3. | While still in the Output screen, select Refresh Rate, select the same refresh |
| rate as the input 4 reference signal, and press Enter (and save). |
4. | While still in the Output screen, select Sync Format, select the same sync |
| format (RGBHV, RGBS, or RGsB) as the input 4 reference signal, and press |
| Enter (and save). |
5. | While still in the Output screen, select Seamless Mode, select On, and press |
| Enter (and save). |
When you turn seamless mode on, the scaler automatically sets the input 4 signal format to passive if necessary.
When seamless mode is on, the scaler will not let you change the input 4 signal format. To change the signal format, you must first turn seamless mode off.
Seamless switching operation
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