ITT - Index of

ITT3064
TV AUTOMATIC FINE-TUNING CIRCUIT
TYPICAL PERFORMANCE CURVES
15
12.l
10
u
l.O
2.5
o
Narrow- Band Dynamic Control
Voltage Characteristics
...... CO~~ECTION CONTROl Vy
...........
I 'A' Z5C
VI\ • lSnv
/ REF. A
"\
i5' 01 VIO
~ /
/ ~ I
"" REF. B
/ 25' of VIO
-- Ii
-O.OlD -0.020 -0.010 45.150 0.010 0.020 O.OlD
Test Circuit 1
Correction Voltages
INPUT FREQUENCY DEVIATION - ~,Hz
See Test Circuit 1
15
12.l
:::- 10
t:l
<
~ 7.5
~
~ S.O
2.5
Wide-Band Dynamic Control
Voltage Characteristics
/
I
CO~I~ECTl1 COJ~OL
r-~Tr-r I\..
REF·illO'Yo 0; VIO
~
REF. ill." .l V 0 l2
\ /
"'--I----' "--V
'A' 2l'C
VIN 'limV
1\
o
-2.0 -1.5 -1.0 -0.5 45.150 0.5 1.0 1.5 2.0
INPUT FREQUENCY DEVIATION - MHz
RJ R6 Rl
3kU OOOllJF 10 15kU
REF. AU-~"""'Mr----o,O:--'W''''''''-'''''''Mr---'30V
REF C
REF. 0
~~I!
R3
9k!1
J
r----r-----,
COIL FORM BASE TERMINAL DIAGRAM
REF. B
NOTE:
°r~
CONTROL VOLTAGE OUTPUT
Parts placement is critical. Use P.C. board
layout on last page for best results.
+---t---t--:*""+-~*7 T
30 0
1--J.
60 0 /
2 TYP.
1---
connections shown for metal can only
L, is aligned for symmetrical bandwidth on
either side of 45.750 MHz.
L, tertiary winding wound on L, coil form
La is aligned· for zero differential output between
terminal·s 4 and 5 at fa = 45.750 MHz
8-37