LG 50PK950 Training Manual page 63

Observing (Capturing) the Y
Observing (Capturing) the Y
All other DC Voltage adjustments should have already been made.
Fig 1:
As an example of how to lock in to the Y-Scan Waveform.
Fig 1 shows the signal locked in at 4ms per/div.
Note the 3 blanking sections.
The area for adjustment is pointed out within the Waveform
Fig 2:
At 2mSec per/division, the area of the waveform to
use for SET-UP or SET-DN is now becoming clear.
Now only two blanking signals are present.
Fig 3:
At 100us per/div the area for adjustment of SET-UP or SET-DN
is now easier to recognize. It is outlined within the Waveform.
Remember, this is the 2
Fig 4:
At 40uSec per/division, the adjustment for
SET-UP can be made using VR402 and the
SET-DN can be made using VR401.
It will make this adjustment easier if you use the
"Expanded" mode of your scope.
- Scan Signal for Set Up Adjustment
- Scan Signal for Set Up Adjustment
Set must be in "WHITE WASH"
large signal to the right of blanking.
ND
Area to
expand
Adjustment
Area
Area to
expand
Blanking
Area to
be adjusted
Blanking
Area for Set-Up
320V
adjustment
p/p
Area for Set-Dn
adjustment
63 October 2010
Adjustment
Blanking
Expanded from above
Expanded from above
180 uSec
50PK950
Area
FIG1
4mS
FIG2
2mS
FIG3
100uS
FIG4
40uS
Plasma