110  
 
Chapter 3  Features and Functions
Burst Mode
3
Burst Count 
The burst count defines the number of cycles to be output per burst. 
Used in the triggered burst mode only (internal or external source). 
• Burst count: 1 to 50,000 cycles, in 1 cycle increments. You can also 
select an infinite burst count. The default is 1 cycle. 
•
When the 
Internal
 trigger source is selected, the specified
 number of 
cycles is output continuously at a rate determined by the burst period 
setting. The burst period defines the interval between bursts. 
•
When the 
Internal
 trigger source is selected, t
he burst count must be 
less than the product of the burst period and the waveform frequency 
as shown below. 
Burst Count < Burst Period  X  Waveform Frequency
• The function generator will automatically increase the burst period 
up to its maximum value to accommodate the specified burst count 
(but the waveform frequency will not be changed). 
•When the gated burst mode is selected, the burst count is ignored. 
However, if you change the burst count from the remote interface 
while in the gated mode, the function generator remembers the new 
count and will use it when the triggered mode is selected.
• Front-Panel Operation: To set the burst count, press the #Cycles 
softkey and then use the knob or numeric keypad to enter the count. 
To select an infinite count burst instead, press the #Cycles softkey 
a
gain to toggle to the 
Infinite
 softkey (press once to start the 
waveform, and a second time to stop it).
• Remote Interface Operation: 
BURSt:NCYCles {<# cycles>|INFinity|MINimum|MAXimum}