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The 3627 Dual channel Programmable filter frequency range with cut off frequency 0.01Hz to 1.59MHz for LPF, HPE, BPF and BEF(option).The use of the 3620 series is not limited to electronics; it also covers a wide field of physical experiments, studies on physical properties and other related areas. Its attenuation slope is 48dB/oct, and phase linear response is also available in the LPF mode.