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Installation Requirements
4-8 C141-E163
(5) Noise filter
To eliminate AC line noise, a noise filter should be installed at the AC input terminal on the IDD
power supply unit. The specification of this noise filter is as follows:
• Attenuation: 40 dB or more at 10 MHz
• Circuit construction: T-configuration as shown in Figure 4.8 is recommended.
Figure 4.8 AC noise filter (recommended)