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Verfügbare Sprachen
Verfügbare Sprachen
10.
Blue raster
To check for colour purity and to test the blue electron gun.
11.
Grey raster
To check for colour purity (signal with alternating burst without colour information),
to check the shadow mask faults, to inspect the colour dot triangle and to set the
tube beam current.
5
12.
Four-vector display
To check the R-Y and B-Y signals, to align the PAL delay decoder,
and the
synchronous demodulators and to check the PAL switch operation.
13.
Special test pattern
To align the PAL delay decoder and the two synchronous demodulators, using the
screen display.
14.
Standard colour bars
15.
PAL switch "off"
To check the PAL-synchronisation, PAL function and for other specific adjustments.
16.
6 MHz sound carrier stage
17.
Sound signal frequency modulation
To test the full sound channel.
Mechanical
construction
The VHF/UHF stages contained in individual metal cases mounted, with the mains
transformer and the fuse (accessible from outside), to the rear mounting
plate.
All operating controls are mounted on the front plate.
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