cxa1700aq Sony Electronics, cxa1700aq Datasheet - Page 48

• Manufacturer Part Number: cxa1700aq
• Description: Luminance And Color Signal Processing For 8mm Vcr
• Manufacturer: Sony Electronics

Adjustment Procedure (Refer to Application Circuit.)
1. REC Y level adjustment
2. Y/C separation adjustment
3. Emphasis input Y level adjustment
4. Y-FM carrier deviation adjustment
5. Chroma emphasis fo adjustment
6. PB Y level 1 adjustment
7. PB Y level 2 adjustment
Note on Operation
• Connect NC (Pin 17) to GND directly.
• I REF (Pin 55) resistance 18k, determines the reference current. Employ a metallic film resistance and of
allowable difference ±1%.
Mode :
Input signal :
Adjustment method : When VIDEO OUT (Pin 36) is terminated with 75 , adjust RV105 (EE LEVEL) so
Mode:
Input signal :
Adjustment method : Adjust RV110 (YC.SEP)
Mode :
Input signal :
Adjustment method : Adjust RV112 (EMPH.Y.LEV) so that the Y signal level at EMPH IN (Pin 5) is
Mode :
Input signal :
Adjustment method : While monitoring the Y RF OUT (Pin 39) signal with a spectrum analyzer, adjust
Mode :
Input signal :
Adjustment method : Adjust RV102 (CEMPH) so that the level of the flat portion of the chroma signal
Mode :
Input signals :
Adjustment method : Adjust RV111 (PB.Y.LEV1) so that DL IN 1 (Pin 23) Y signal level is 500mVp-p.
Mode :
Input signal :
Adjustment method : When VIDEO OUT (Pin 36) is terminated with 75 , adjust RV113 (PB.Y.LEV2) so
REC, 29 video AGC = High
color bar 500mVp-p (Pin 30 V IN1)
that the output is 1Vp-p.
REC, 5 SHP THRU = High
color bar 500mVp-p (Pin 30 V IN1)
the residual chroma component at Y COMB OUT (Pin 14) is minimum.
REC
color bar 500mVp-p (Pin 30 V IN1)
500mVp-p.
REC, 22 E = Low (standard mode)
100% white, 500mVp-p (Pin 30 V IN1)
RV108 (CARR) so that the H SYNC spectrum (carrier) is 4.2MHz in standard mode,
and adjust RV107 (DEV) so that the 100% white Y level spectrum is 5.4MHz in
standard mode.
REC, 2 TEST1 = high
color bar 500mVp-p (Pin 30V IN1)
after burst emphasis output to REC C OUT (Pin 8) is minimum.
PB
PB Y RF 200 =mVp-p (Pin 41 Y RF IN)
PB
PB Y RF 200mVp-p (Pin 41 Y RF IN)
that the output is 1Vp-p.
—48—
RV103 (COMB.ADJ)
RV110 (YC.SEP) in turn so that
CXA1700AQ/AR