CEMB USA N500 - Manual (Page 41)

FFT analyzer mode 6 - 9
After pressing the threshold value can be preset in two ways, namely:
–
By typing, using the numeric keyboard (only after pressing , it is possible
to shift the broken line in the graph);
–
by using and to increase or decrease the value of a single digit,
which can be selected with
and
(the broken line in the graph is shifted
immediately, however at the end, pressing of is always necessary in order
to confirm).
N.B.
The trigger threshold should always be set in the unit of natural measurement of
the sensor. However, in the Measurement page, it is possible to supply the vibration
in other units even if this is not recommended when making measurements with
the trigger enabled.