LG 50PG20 Series, Руководство по обучению

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Plasma Spring 2009 50PG20
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Observing the Y Observing the Y - - Drive Signal for Drive Signal for Vsetdn Vsetdn Ramp Ramp - - Down Down
Fig 1 Top:
As an example of how to lock in to the Y-
Drive Waveform. Figure 1 top shows the signal locked
in at 4ms per/div. The signal for Vsetdn is outlined
within the Waveform.
Fig 2 Top:
At 2ms per/div. the signal for Vsetdn is
now easier to recognize. It is outlined within the Waveform
Fig 3 Top:
At 200uSec per/div. the signal for Vsetdn is
now clearly visible. It is outlined within the Waveform
Fig 3 Lower:
At 20uSec per/division, the
adjustment for Vsetdn can be made.
Fig 2 Lower:
At 100uSec per/division, the waveform
to use for Vsetdn Is now isolated.
Fig 1 Lower:
At 400uSec per/division, the waveform
to use for Vsetdn Is now isolated.
FIG1
FIG2
FIG3
Area to
be adjusted
Area to
be adjusted
Area to be adjusted
Zoomed out
Outlined
Area
V SET DOWN set too high can cause shut down. Remove
LVDS cable to allow set to remain on and realign Set-Dn