The allowable amount of crosstalk between channels is 75 decibels minimum. To calculate whether your particular PowerLab meets this specification apply a signal to the Primary Channel, measure the amplitudes of the signals in the Primary and Crosstalk Channels, and use the following equation:
Crosstalk in decibels = 20 x log( Primary Channel / Crosstalk Channel )
If you have questions about the above, please contact one of your region's Technical Support representatives by filling out the web form located HERE.