Promax GV-698, Instruction Manual

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Group B.-
Colour saturation control, tint control, etc.
- B1 Colour bars
- B2 Horizontal colour bars
- B3 Luminance/Colour bars/Multiburst/DEM
Composite chart for contrast control, tint control, definition and colour
demodulators.
- B4 Colour bars / Scale of greys
Saturation in optimal conditions for the adjustment of contrast and
brightness.
Group C.- Colour luminance control, R, G, B amplitude, seen on the screen.
- C1 White split 100% / VTR signal colour bars
- C2 Red split colour bars
- C3 Green split colour bars
- C4 Blue split colour bars
Group D.- Purity, noise and beam current control for R, G and B. R, G, B
outputs check.
- D1 Red raster
- D2 Green raster
- D3 Blue raster
- D4 RGB
Group E.- Colour demodulator control, phase and delay line.
- E1 Antipal with split–field 50% luminance
Adjustment of phase, delay line and colour demodulators.
- E2 Axes and antipal
Adjustment of colour demodulators.
- E3 Colour bars / Multiburst
Verification of the video amplifier bandwidth.
- E4 Delay
Chrominance and luminance delay check.
Group F.- Resolution, video response and linearity control.
- F1 Scale of greys
Video amplifier linearity (correct ratio between the values of the electronic
beam currents), whiteness control and adjustment, contrast and brightness
control.
- F2 Multiburst
Determination of the bandwidth of the video amplifier.
- F3 Chequer-board
Video amplifier low frequency response.
- F4 Window
Response to transients in the video signal, DC restoration circuit check
(clamping), and delay.
05/96 GV-698