A N 9 3
298
Rev. 1.4
Power Line Related Noise
Figure 70. Odd Harmonics of 50 Hz Manifest as Horizontal Lines Spaced at 100 Hz
Causes:
Unbalanced phone line
High ac leakage supply
Poor CMR in modem
Solutions:
Fix the telephone line.
Ground the system to earth or float completely using a battery.
Use an analog supply with lower ac Leakage
Summary of Contents for Si2404
Page 2: ...AN93 2 Rev 1 4 ...
Page 200: ...AN93 200 Rev 1 4 Figure 31 TAM Handset and Speakerphone Voice Paths ...
Page 201: ...AN93 Rev 1 4 201 Figure 32 Si3000 Codec Gain and Signal Selection Options ...
Page 290: ...AN93 290 Rev 1 4 Figure 57 256 Band Spectral Display Figure 58 2048 Band Spectral Display ...
Page 305: ...AN93 Rev 1 4 305 Figure 76 Parallel or SPI Port Interrupt Service Flowchart ...