Hello Roby,
You can configure the loss of the feeder line (cable loss) from the ATU to the antenna.
See the documentation of configuration cell 34:
"34 ¡ª cell for setting a feeder power loss ratio, the first number ¡ª integer part of?
decibell, second number ¡ª ten¡¯s parts of decibell. Velue by default ¡ª 1.2 (12 writen?
in the cell). this value uses for counting the power delivered to antenna. The loss?
value can be found in the reference data for the used cable or you can measure the exact value yourself.
?If it is not necessary to take into account feeder losses, the value 00 should be
written into the cell, then the calculations will correspond only to the mismatch
losses."
73, Joerg - DB2OO