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OPERATING INSTRUCTIONS 
        
 
                                                                                                                                         
           
 
                                                                         
 
 
14
 
 
 
 
 
 
 
3. Varying the duty cycle setting results in a slight change in 
frequency. Adjust the COARSE and FINE frequency controls 
as required. 
 
BURST OPERATION 
In gated burst mode of operation, the generator output is switched 
on and off (gated), either by an internally generated signal or by an 
externally applied signal. Both the repetition rate and the duty cycle 
are variable. Fig. 5 illustrates the type of waveform generated and 
summarizes the control settings used to obtain the desired waveform. 
 
Internal Triggering 
 
1. Select the waveform to be gated by pushing in the appropriate 
FUNCTION switch. Display the output of the generator on an 
oscilloscope. 
2. Adjust the frequency, amplitude, symmetry, and dc offset of the 
signal by using the main generator controls. 
3. Enable the burst mode by pushing in the BURST ON switch. 
4. Set the repetition rate of the burst with the SWEEP TIME 
control. 
5. Adjust the tone burst duty cycle, or adjust the tone burst width 
to a specific time period, with the BURST WIDTH control. 
 
External Triggering 
 
1. Select the waveform to be gated by pushing in the appropriate 
FUNCTION switch on the front panel. 
2. Adjust the frequency, amplitude, symmetry, and dc offset of the 
signal by using the main generator controls. 
 
Figure 5. Tone burst generator output 
waveform.