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  Pattern Generator

Study of Pattern Generator and Function Generator (With Counts):

To study the basic working of pattern generator and function generator (with counts).

Components Needed:

S. No.     Name of Components / Apparatus                   Quantity

1.

Pattern generator

1

2.

Function generator

1

Pattern Generator:

It is electronic equipment employed for tuning and aligning the Television receivers. Thus it produces various kinds of bars, lines and sounds.

Process of using a Pattern generator front Panel Controls:

1. By Using co-axial cables connect R.F out and television receiver. After that adjust the R.F attenuator simultaneously.

2. Horizontal Bar Pattern:

By using this control, we can adjust the vertical size, linearity of the picture.

3. Vertical Bar Pattern:

By using this control, we can adjust horizontal, size, linearity of the picture.

4. Cross Hatch Pattern:

By Using this control, we can adjust the align, the horizontal and vertical stages. Also we can adjust focusing.

5. Dot Pattern:

In colour television we can perform convergence using this control.

6. Pure white Pattern:

By using this control, we can adjust the black level and white level in colour television.

7. We can align or synchronize the sound section also.

Application of Pattern Generator:

1.  Horizontal and Vertical and linearity and height of the picture can be adjusted.

2.  Aspect ratio, Pincushion adjustment and centring of the picture can be done, using pattern generator.

3.  Contrast, brightness, and focusing can also be adjusted right.

4.  R.F. stage and I.F stage in sound section can be aligned using this generator.

5.  In colour TV, Tuning the colour perfectly, convergence and purity can be done using this generator.

6.  While there is no programme, we can service the TV receiver using pattern generator.

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