RIGOL DS1000B - Manual (Page 79)

RIGOL
User’s Guide for DS1000B Series 2-49
5. Adjustable trigger sensitivity
To avoid the influence of noise from the physical world, and get the stable trigger,
the trigger circuit has adopted Stickiness. In DS1000B series, the stickiness is
adjustable from 0.1div-1.0div, which means when it sets to 1.0div; the trigger
circuit will not affect any signal with peak-peak amplitude less than 1.0div, so as
to avoid the influence of the noise.