Can the calculated channel limit using ProFilter on another channel such as distance, etc.?
Yes. ProFilter converts a calculated channel to even increments. The data must have been recorded at a minimum data rate of 100 lines/sec (100 Hz). ProFilter assumes a calculation of Speed = Freq/Spec*60 where Freq is the frequency channel (7–12) that has the raw speed pickup, Spec is the specification channel that holds the conversion factor for translating the raw frequency measurement into rpm, and Speed is the even-incremented channel. You must give ProFilter the Freq and Spec channel numbers so it can convert back and forth between the raw frequency data and the calculated rpm value (calculated channel values are not stored in the SFD file, and ProFilter needs to convert both directions to determine what raw freq values equate to the desired calculated even-increment values). The limitations are: • The raw measurement must be on a freq channel (7–12). • The data must be recorded at 100 Hz (or faster). • The conversion from the freq channel data to the calculated data must be const
