Sony EVO-720P - Page 253

[8-4-2 Decoder Oscillation Free-run Frequency
8-4-4. Ciemp Pulse Amplitude Adjustment
Adjustment (DM-24 Board) {(DM-24 Board)
{ Mode Stop (Recorder side) Mode Stop (Recorder side)
Signal Non-signal Signal Color bar
Measurement Point TPOGS (Pin @ of iCo0i) Measurement Point TPOIS
Measuring Instrument } Frequency counter *Note Measuring Instrument | Oscilloscope
{Adjusting Element cvool Adjusting Element RV007
| Specified Value 4433618420 Hz { Specified Value 3,.0+0.2 zsec
ote: Connect the frequency counter through a Switch setting :
buffer amplifier (oscilloscope, ete.) with a high ¢ Recorder input select switch + ‘EXT
} input resistor (1 MQ or more) and low
capacity (10 pF or fess). Adjusting method :
1) Adjust pulse amplitude to 3,040.2 asec with
‘onnection : a RVOO07.
|) Remove the pattern generator from the recorder —
| video input terminal, and input no signals,
\witen setting :
» Recorder input select switch »
|
adjusting method :
“LINE
) Adjust to 4433618 £20 Hz with CVOO1.
+
Approx. 0.6 Vp-p
4
(4433618220 Hz)
Fig. 8-36, Decoder oscillation free-run frequency
j¥—— 1 ——_____+|
| le-s.0+02 useo
Fig. 8-37. Clamp pulse amplitude adjustment
8-4-5. Decoder Color Phase Adjustment {DM-24 Board)
Mode
Signal
Measurement Point
Stop (Recorder side)
Color bar
TPOO2 (B-Y) Pin @ of }CO13
adjustment
Measuring Instrument |
Oscilloscope (DC range)
Adjusting Element
RV004 (TINT)
Specificd Value 2.340.05 Vde
Switch setting :
+ Recorder input select switch «rr EXT
Adjusting method:
1) Adjust to 2.3 £0.05 Vde with RV004.
2,320.05 Vde
OVde
Fig. 8-38. Decoder color phase adjustment
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