อย่าหลงป่าเลยครับผม
ONE ship เขาออกแบบมา ใช้ 3.3v เป็นไฟเลี้ยงครับ Hor มันจะเกิด จาก 3.3v ส่วน 8v เป็นตัวสานต่อ หลังจาก Start ได้แล้ว ผมไม่ได้ไปอบรมอะไรกับเขาหรอก หาเอาจากตำรา ฝรั่งครับ แปลไม่ได้ก็เปิด Dic ครับ ไม่เก่งเหมือนกัน
แต่อ่านพอเข้าใจ
นี่คือสรุปการทำงานของ Hor ว่าเกิดจากที่ไหนกัน วันซิบเกือบทุกรุ่น
1.
When the 3.3 V supply is present and the -Controller is active a low-power start-up mode can be activated. When
all sub-address bytes have been sent and the POR and XPR flags have been cleared the
horizontal output can beswitched-on via the STB-bit (subaddress 24H). In this condition the horizontal drive signal has the nominal TOFF and
the TON grows gradually from zero to the nominal value. As soon as the 8 V supply is present the switch-on procedure
(e.g. closing of the second loop) is continued.
2. On set AGC.
3. This parameter is not tested during production and is just given as application information for the designer of the
television receiver.
4. Loop bandwidth BL = 60 kHz (natural frequency fN = 15 kHz; damping factor d = 2; calculated with top sync level as
FPLL input signal level).
5. The IF-PLL demodulator uses an internal VCO (no external LC-circuit required) which is calibrated by means of a
digital control circuit which uses the clock frequency of the -Controller as a reference. The required IF frequency for
the various standards is set via the IFA-IFC bits in subaddress 27H. When the system is locked the resulting IF
frequency is very accurate with a deviation from the nominal value of less than 25 kHz.
6. This parameter is not tested during production but is guaranteed by the design and qualified by means of matrix
batches which are made in the pilot production period.
7. Measured at 10 mV (RMS) top sync input signal.
8. Via this pin both the demodulated IF signal and the selected CVBS (or Y+C) signal can be supplied to the output.
The selection between both signals is realised by means of the SVO bit in subaddress 22H.
9. So called projected zero point, i.e. with switched demodulator.
