Allen-Bradley MicroLogix 1200, User Manual, Page: 42 / 144

Publication 1762-UM002A-EN-P - July 2002
3-12 Module Data, Status, and Channel Configuration
Channel Cut-Off Frequency
The filter cut-off frequency, -3 dB, is the point on the frequency
response curve where frequency components of the input signal are
passed with 3 dB of attenuation. The following table shows cut-off
frequencies for the supported filters.
All input frequency components at or below the cut-off frequency are
passed by the digital filter with less than 3 dB of attenuation. All
frequency components above the cut-off frequency are increasingly
attenuated as shown in the graphs on page 3-13.
Table 3.3 Filter Frequency versus Channel Cut-off Frequency
Filter Frequency Cut-off Frequency
10 Hz 2.62 Hz
50 Hz 13.1 Hz
60 Hz 15.7 Hz
250 Hz 65.5 Hz
500 Hz 131 Hz
1 kHz 262 Hz