Installation and Operation, cont’d
NThe centering controls have no mechanical limits to rotation. When the minimum or maximum limit of the control is reached, LCD indicates the horizontal or vertical shift limit has been reached and the picture stops moving on the screen.
Centering memory
Turning the centering knobs not only moves the images, but it also stores the horizontal and vertical centering setting in the interface’s memory. The interface recalls the centering settings each time it detects a change in the input frequency. Centering adjustments only need to be set once for an application because the settings are saved even when the power is off.
LCD display
E | LCD display — The LCD displays the horizontal and vertical |
| scanning rates of the input signal and indicates the horizontal |
| and vertical centering status and limits. |
LCD screen backlight
The LCD backlights for 15 seconds at
Scan rate indication
When the interface is powered on, the LCD lights for 15 seconds while it determines whether an input sync signal is present. If DIP switch 6 is set to On (up), the LCD lights for three seconds only.
•If the interface does not detect an input sync signal, the LCD goes dark and displays NO SIGNAL until the interface receives an active sync signal.
•If the interface detects an input sync signal, the LCD displays the horizontal and vertical scan rates (sync frequencies) in the following format:
Hxxx.xxk
Vxxx.xHz
The first line shows the horizontal rate in kilohertz, and the second line shows the vertical rate in Hertz.
Centering indications
While the vertical ({) or horizontal ([) centering (shift) controls are being adjusted, the LCD displays