4.  Press Mode repeatedly to 
select the trigger mode, 
Auto or Normal. To select 
the Single trigger mode, 
press the Single key. 
5.  Press When repeatedly to 
select the pulse condition. 
Then use the Variable knob 
to set the pulse width. 
6.  Press Slope/Coupling to set 
trigger slope and coupling. 
7.  Press Slope repeatedly to 
select the trigger slope, 
which also appears at the 
bottom of the display. 
Rising edge, falling edge 
8.  Press Coupling repeatedly to 
select the trigger coupling. 
9.  Press Rejection to select the 
frequency rejection mode.