111
Chapter 3  Features and Functions
Triggering
3
Trigger Output Signal
A “trigger out” signal is provided on the rear-panel Trig Out connector 
(used with sweep and burst only). When enabled, a TTL-compatible 
square waveform 
with either a rising edge (default) or falling edge is 
output from the rear-panel 
Trig Out
 connector
 at the beginning of the 
sweep or burst. 
• When the Internal (immediate) trigger source is selected, the function 
generator outputs a square waveform with a 50% duty cycle from 
the Trig Out connector at the beginning of the sweep or burst. 
The period of the waveform is equal to the specified sweep time or 
burst period.
• When the External trigger source is selected, the function generator 
automatically disables the “trigger out” signal. The Trig Out 
connector cannot be used for both operations at the same time (an 
externally-triggered waveform uses the same connector to trigger the 
sweep or burst). 
• When the Bus (software) or manual trigger source is selected, the 
function generator outputs a pulse (>1 µs pulse width) from the 
Trig Out connector at the beginning of each sweep or burst. 
• Front-Panel Operation: After enabling sweeps or burst, press the 
Trigger Setup softkey. Then select the desired edge by pressing the 
Trig Out softkey. 
• Remote Interface Operation: 
OUTPut:TRIGger:SLOPe {POSitive|NEGative}
OUTPut:TRIGger {OFF|ON}
Ext Trig
>1µs
Rising edge shown.
+3 V
0 V
33210A users guide.book  Page 111  Wednesday, July 16, 2008  11:16 AM