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SI4835 Arkusz danych(PDF) 4 Page - Silicon Laboratories |
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SI4835 Arkusz danych(HTML) 4 Page - Silicon Laboratories |
4 / 40 page AN569 4 Rev. 0.3 3.2. FM Sensitivity 3.2.1. Description Determine input level in dBµVemf to result in 26 dB SINAD in mono RX mode. 3.2.2. Conditions/Procedure 1. Connect test equipment as shown in Figure 1. 2. Configure the tuner in standard configuration. 3. Configure the audio analyzer: a. Select Analyze. b. Set Function = THD+N/SINAD. i. Set Measurement Mode = SINAD. ii. Set Unit = dB. iii. Set Filter = A-weighting. iv. Set Frequency Limit Low = 300 Hz. v. Set Frequency Limit High = 15000 Hz. 4. Configure generator: a. Set carrier frequency = 98 MHz. b. Select FM Modulation. i. Set FM Deviation = 22.5 kHz. ii. Set Source = LFGEN. iii. Set LFGEN frequency = 1 kHz. c. Enable modulation. d. Enable carrier. 5. Adjust generator RF level, VRF0, until audio analyzer SINAD = 26 dB ±1 dB. 6. Sensitivity (dBμVemf) = VRF0. 3.2.3. Pass Criteria FM sensitivity should be below 10 dBµVemf. |
Podobny numer części - SI4835 |
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Podobny opis - SI4835 |
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