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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS7000 датащи(PDF) 43 Page - ams AG |
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AS7000 датащи(HTML) 43 Page - ams AG |
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43 / 92 page  ams Datasheet Page 43 [v1-12] 2018-Feb-26 Document Feedback AS7000 − Detailed Description Sync Demodulator Example LED1 and LED2 should be modulated with 2kHz Demodulated signal should be sampled with 20Hz for 1 second. Calculation of sequencer values: 1. Modulation Frequency = 2kHz. Period = 500us. 2. Set sequencer period to 250us. -> seq_div=0, seq_period=500 3. Operation of LEDs between 0us and 100us (depends on LED and Amp-settings) -> seq_led_start=1, seq_led_stop=100 4. Operation of photo-amplifier and synchronous demodulator multipl. by +1 between 50us and 100us -> seq_sdp_start=50, seq_sdp_stop=100 5. Operation of photo-amplifier and synchronous demodulator multipl. by -1 between 300us and 350us -> seq_sdm1_start=300, seq_sdm1_stop=350 6. Sampling position at 495us + settling -> seq_adc=490 7. ADC should only sample at 20Hz (50ms). This means sampling at every 50ms/500us = 100th sequencer run. sd_subs=100 8. ADC values should be stored for 1 second. This means 1s/50ms = 20 samples must be stored. ->seq_count=20 |
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