IQ Signal Master™ MX280005A Vector Signal Analysis Software Help : Filter Definition Settings : User Defined Filter Definition
 
User Defined Filter Definition
The User Defined Filter is defined as shown below. When the Measuring Object is Frame Formatted or Non-Formatted.
There must be a FIR filter coefficient string expressing the 8 times oversampling time response (as real number) for the symbol rate.
The filter coefficient tap number must be an odd number in the range 1 to 501.
The filter coefficient center must match the symbol timing.
The FIR filter coefficient must be expressed by time response (as real number) at sampling rate of 5 MHz.
The filter coefficient tap number must be an odd number in the range 1 to 10001.
The delay of the filter that removes adjacent waves must be “(Filter coefficient tap number – 1) /2”.
Because the analysis software does not adjust the gain of filter coefficient, the gain adjustment must be made to the filter coefficient.