7-3
(5) Pin 5 is terminal of SHIFT GAIN CONTROL.
Range of control voltage is 0 to 2.5V. When control voltage
is 2.5V, phase of FBP become most delayed condition to hor
sync signal. The hor phase shift controlled by this terminal
is decided by time constant connected to pin 6. And since
phase control by this terminal synchronizes to hor osc
frequency, uses the same value of capacitor as that connected
to pins 6 and 11.
On the assumption that FBP width which is input to pin 18
always constant, when voltage of this terminal is turned to
0V, phase difference does not change with the change of hor
osc frequency.
And when the voltage of this terminal is turned to 2.5V,
phase of FBP is controlled to the delayed tendency comparing
to hor osc frequency input at pin 1: Longer the period of hor
osc frequency is, more delayed the tendency is.
(6) Time constant of pin 6 decides the phase shift controlled
by pin 5.
5
2.5K
Fig. 6
6
100
100
43K
Fig. 7
H.SYNC [ PIN]
1st DELAY [ PIN]
2nd DELAY [ PIN]
Ts
Ts
Tdelay
1/10Th
Tfbp
Tf
1/10Th
Tst
1
4
6
INT.SYNC [ PIN]
FBP [ PIN]
FBP DELAY [ PIN]
SAW [ PIN]
H.OUT [ PIN]
H.OSC [ PIN]
10
18
20
11
15
22
Fig. 8 Timing chart of hor phase control
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