106  
 
Chapter 3  Features and Functions
Triggering
3
Triggering 
Applies to sweep and burst only. You can issue triggers for sweeps or 
bursts using 
internal
 triggering, 
external
 triggering, or 
manual
 triggering. 
• Internal or “automatic” triggering is enabled when you turn on the 
function generator. In this mode, the function generator outputs 
continuously when the sweep or burst mode is selected. 
• External triggering uses the rear-panel Trig In connector to control 
the sweep or burst. The function generator initiates one sweep or 
outputs one burst each time Trig In receives a TTL pulse. You can 
select whether the function generator triggers on the rising or falling 
edge of the external trigger signal. 
• Manual triggering initiates one sweep or outputs one burst each time 
you press from the front-panel. Continue pressing this key to 
re-trigger the function generator. 
• The key is disabled when in remote and when a function other 
than burst or sweep is currently selected. 
Trigger Source Choices 
Applies to sweep and burst only. You must specify the source from which 
the function generator will accept a trigger. 
• Sweep trigger source: Internal, External, or Manual. The default 
is Internal. 
• The function generator will accept a manual trigger, a hardware 
trigger from the rear-panel Trig In connector, or continuously output 
sweeps or bursts using an internal trigger. At power-on, internal 
trigger is selected. 
33210A users guide.book  Page 106  Wednesday, July 16, 2008  11:16 AM