TA1317AFG Datasheet, PDF (53/58 Pages) Toshiba Semiconductor – Deflection Processor IC for TV

Note
No.
Parameter
43 Parabola amplitude
adjustment (EW parabola)
change amount at PWM
TA1317AFG
SW6
OFF
SW7
B
SW8
ON
Test Condition
SW Mode
SW10 SW13 SW14 SW21 SW30
Test Method
(unless otherwise specified, V_CC = 9 V, Ta = 25 ± 3°C, data = preset values)
ON
A OFF A
A (1) Input vertical trigger pulse to pin V_IN.
Pulse level (VT) = 3.0 V
(2) Set PICTURE WIDTH (sub-address: 01) to maximum (data: 8C).
(3) Apply external power supply (DC voltage = 7 V) to pin 3 (EHT IN).
(4) Set EW PARABOLA (sub-address: 0A) to minimum (data: 00) and measure Pin 13
(EW FD) amplitude V_PP (00).
(5) Set EW PARABOLA (sub-address: 0A) to center (data: 20) and measure Pin 13
(EW FD) amplitude V_PP (20).
(6) Set EW PARABOLA (sub-address: 0A) to maximum (data: 3F) and measure Pin 13
(EW FD) amplitude V_PP (3F).
(7) Calculate change amount V_PP using the following formula.
Pin 13 (EW FD) waveform
V_PP = V_PP (3F) − V_PP (00)
53
2005-08-18