cxa1700aq Sony Electronics, cxa1700aq Datasheet - Page 40

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

6. Carrier/deviation adjustment
SMEAR
CONT
DEV CONT
The Y FM modulation carrier frequency is adjusted by applying an external DC bias to CARR CONT (Pin
44). When carrier adjustment is performed, gm1 and gm2, the deviation/smear gain, change in proportion
to IXCAR at the same time. This results in the FM modulator sensitivity being roughly adjusted for the Dev
IN/Sme IN signal level. Fine adjustment of the deviation frequency is accomplished by the DC bias applied
to DEV CONT (Pin 43).
42
43
Dev IN
Sme IN
Smear
Cont
Dev
Cont
g
g
m1
m2
gm1=K
gm2=K
I
I
XDEV
XSME
1
2
I
I
XDEV
XSME
—40—
I
XCAR
Carr
Cont
FM
Mod
LIM
44
39
CARR CONT
CXA1700AQ/AR
YRFOUT