TA0321 Просмотр технического описания (PDF) - STMicroelectronics

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TA0321

Lightning protection for LNB supply and control voltage regulator

STMicroelectronics 

TA0321

3 22kHz Tone and DiSEqC (Digital Satellite Equipment Control) Encoding

3.1 22 kHz Wave shape and details

Carrier frequency

Carrier amplitude

Modulation mark period

Modulation space period

22 kHz ±2 kHz over line and temperature

650 mVpp ±250 mV

500 µs ±100 µs

1 ms ±200 µs

3.2 Modulation method

Figure 3. Modulation scheme

Figure 4. Timing diagram for tone burst control signal

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