Planar LC1200R 6 User Controls

LC1200R User’s Guide

021-0183-00 Rev A 17 of 29

The LC1200R is not damaged by input voltages ranging from 0-vdc to 12.4-vdc.

The LC1200R will automatically return to normal operation upon resumption of power after a power

loss.

6 User Controls

The display comes from the factory adjusted for the supported modes. When using these modes,

adjustment should not be necessary. However, if it should become necessary, or a non-supported

mode is selected, the following controls are available for adjustment.

There are 4 push buttons located on the back of the display, which allow adjustment of the displayed

image.

The provided controls are:

Name Function

Dot Clk - Clock Frequency/Phase Decrease

Dot Clk + Clock Frequency/Phase Increase

Horiz Horizontal Position Adjustment

Vert Vertical Position Adjustment

Gain Video Gain Adjustment

The Clock Frequency /Phase adjustments are dual function buttons. The clock frequency adjustment

is used to change the horizontal size of the displayed image. The Phase adjustment is used to

minimize the pixel ‘noise’ or ‘jitter’. The phase allows for 32 positions of phase control. If the button is

held down, the clock frequency is adjusted up or down 1 clock each time the phase control register

rolls over. To adjust the clock frequency further, continue to hold the button down. If phase

adjustment is desired, it’s best to use single presses.

The Horizontal Position is adjusted by holding down the Horiz button. The position will shift by 1

column for each press. If the button is held down, the position will continuously adjust until released.

The direction of the adjustment depends on the direction of the last adjustment. The direction will

continue to be true until the maximum or minimum adjustment is reached. At this point, the

direction will reverse.

The Vertical Position is adjusted by holding down the Vert button. The position will shift by 1 column

for each press. If the button is held down, the position will continuously adjust until released. The

direction of the adjustment depends on the direction of the last adjustment. The direction will

continue to be true until the maximum or minimum adjustment is reached. At this point, the

direction will reverse