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K Ypbpr Betacam Setup 0 Signal Adjustment - Sony TRINITRON PVM-14L5 Service Manual

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4-2-3. 15k YPBPR BETACAM SETUP
0 Signal Adjustment
1. Input the 15 kHz/60 Hz YPBPR BETACAM SETUP 0
color bar signal to the RGB/COMPONENT connector.
2. Press the RGB/CMPNT switch on the operation panel
and select YPBPR BETA 0.
3. Connect an oscilloscope to TP1251.
4. Adjust the G-Y/B (A2_AB) on the MENU so that the
second step of the waveform has the standard value.
Remove the difference in amplitudes between the
second step and the third step of the waveform with G-
Y/R (A2_9D) on the MENU. Adjust finely until the
top peak from the second step to the fourth step of the
waveform has the same amplitude.
G-Y/R variable adjustment
G-Y/B variable adjustment
Standard value : 0
Fig. 4-12
5. Connect an oscilloscope to TP1351.
6. Adjust the PB LEVEL (A2_E3) data on the MENU so
that the first step and the fourth step of the waveform
have the same amplitude.
Fig. 4-13
7. Connect an oscilloscope to TP1451.
8. Adjust the PR LEVEL (A2_BB) data on the MENU
so that the first step and the second step of the wave-
form have the same amplitude.
Adjust for the same amplitude
0 ±20 mV
Fig. 4-14
PVM-14L5/20L5/D14L5A/D20L5A
Make flat
0 ±20 mV
±
2 mVp-p
Adjust for the same amplitude
0 ±20 mV
4-2-4. 15k YPBPR BETACAM SETUP
7.5 Signal Adjustment
1. Input the 15 kHz/60 Hz YPBPR BETACAM SETUP
7.5 color bar signal to the RGB/COMPONENT
connector.
2. Press the RGB/CMPNT switch on the operation panel
and select YPBPR BETA 7.5.
3. Connect an oscilloscope to TP203.
4. Adjust Y/G BLACK (A2_8C) data on the MENU so that
the pedestal portion becomes flat.
Make flat
Standard value : 0
Fig. 4-15
5. Connect an oscilloscope to TP1251.
6. Adjust the Y LEVEL (A2_88) data on the MENU so
that the amplitude becomes the standard value.
Standard value : A = 540
Fig. 4-16
7. Adjust the G-Y/B (A2_AC) on the MENU so that the
second step of the waveform has the standard value.
Remove the difference in amplitudes between the
second step and the third step of the waveform with G-
Y/R (A2_9E) on the MENU. Adjust finely until the
peak portion from the second step to the fourth step of
the waveform has the same amplitude.
G-Y/R variable adjustment
G-Y/B variable adjustment
Fig. 4-17
±
10 mV
A
±
20 mVp-p
Make flat
0 ±20 mV
4-5

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