Beijer Electronics MT 223 EN User Manual

Page 21

7.1. Power Supply

The MT223 NAV is certified for the connection to protective grounded supplies EN60950.

1 Power supply 230 VAC

with fuse 1A T

7.2. Protected Ground

In order to ensure a safe derivative from electrical interferences,

the following points are to be considered:

• Connect device and device cabinet as short as possible with a central point of grounding.

• Pay attention to a low inductive connection between device and cabinet

• All data cables attached to the device are to be implemented with protected shield.

• The shields are to be grounded on both sites

• Between the connected systems a low impedance must exist. High balancing currents over the shield as conse-

quence from potential differences are to be excluded.

• Execution of the grounding connection with min. 4 mm² cross section.

7.3. Composite

Composite video is the format of the analog TV signal, before it is modulated on a RF carrier (broadcast and/or televi-

sion frequency). It is mostly in a standard format like NTSC, PAL or SECAM. It is compound from three source signals,

those with Y, U and V (together YUV) to be called. Y called the brightness of the picture and includes synchroniza-

tion impulses. Thus this signal can be alone already used for the representation of a gray tone picture. U and V are

carriers of the color information. It first from two to each other orthogonalen phases of the color carrier signal mixed

to a signal, which color value (chrominance) is designated. Therefore the signals Y and UV are mixed. Since Y is a

baseband signal and is mixed UV with a carrier, the developed signal equivalent is to frequency divided Multiplexing.

Function: Connection between second videos source and monitor to the transmission the video data

e.g. for PIP (Picture in Picture „Split screen“) function

Note:

The selection the videos source(s), synchronization, image position, window position as well as further settings are

accomplished in the OSD menu.