M2503 VIDEO BOOSTER C a l i b r a t i o n :
1.
Plug the Power Supply cord of the CCU into AC outlet.
2. Tu r n on the power to the CCU. The following waveforms should
be shown on the oscilloscope display screen.
CH2
----- OV
Booster Value Adjustment:
INTENSITY CONVERSION is adjusted using 4 potentiometers (P1, L1,
OFS, GAIN). The meaning of the potentiometers and adjusting tech-
niques described in the following steps.
1. Tu r n potentiometers (L1, P1, L2, P2) fully clockwise.
2. Using the GAIN potentiometer, adjust the slope of the waveform at
TP2 (Channel 2). GAIN determines the slope of the characteristic.
Turning GAIN clockwise results in an increased slope, counter-
clockwise in a decreased slope. When gamma is 0.5, the slope is
approximately 4.
3. Tu r n P1 fully counterclockwise.
4. Using L1 potentiometer, adjust the bending level of the waveform
on TP2 (Channel 2). L1 determines the bending level of the char-
acteristic. Turning L1 clockwise will set a higher level, counter-
clockwise a lower level.
Bending-
level low
Bending level high
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