cxa1700aq Sony Electronics, cxa1700aq Datasheet - Page 48
cxa1700aq
Manufacturer Part Number
cxa1700aq
Description
Luminance And Color Signal Processing For 8mm Vcr
Manufacturer
Sony Electronics
Datasheet
1.CXA1700AQ.pdf
(51 pages)
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