4. LUMINANCE AND COLOR RECORD CURRENT
1) Input Color bar signal in 'video line in'.
2) Make every adjustment in REC mode.
3) Connect CH. 1 of oscilloscope to TP399 and TP GND and CH. 2 TP313 (C.SYNC), and then trigger the scope with an
external signal.
4) Adjust RV491 Until the color record current level (RED REFERENCE) becomes 100¡ 5mVp-p.
5) Connect CH. 1 of oscilloscope to TP399 and TP GND and CH. 2 TP313 (C.SYNC), and then trigger the scope with an
external signal.
6) Adjust RV399 Until the Luminance level becomes 300¡ 10mVp-p.
8
Adj. Location Checking Point Measuring Equipment Mode Test Tape
RV339
TP399 Oscilloscope REC. Blank Tape
TV491
Color Record Current
a:100mVp-p¡ 5mVp-p
Y Record Current
b:300mVp-p¡ 10mVp-p
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