Users Manual

consequence. But in the case that distortion cannot be tolerated, consider that the
minimum frequency separation between two filters to avoid this problem is 1.25
times the semi-sum of their bandwidths. For instance, two filters width
bandwidths 90KHz and 30KHz respectively, must be separated apart by 1.25·(90 +
30) / 2 = 75 KHz.
Nevertheless, there are certain conditions under which filters can be set closer to
make up a single filter with wider bandwidth:
o The frequency separation must be 93.75 KHz.
o All of them must have the same bandwidth setting of 90 KHz.
o All of them must have the same fine gain setting.
The Filter Info window shows the frequency response of the combination of up to
five filters: