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3.4 FIRST TIME OPERATION
The following exercise will familiarize the operator with most functions of the Model 4013 function
generator. Preset the controls as follows:
WAVEFORM ...................SINE
DUTY CYCLE .................OFF
OFFSET .........................OFF
ATTENUATOR................OFF
AMPLITUDE ...................CENTERED
Connect a 50
coaxial cable, terminated into a 50
feedthrough, to the vertical input of an
oscilloscope (set vertical to 2V/Div and horizontal to 1 ms/Div). The oscilloscope should display a
triangle waveform.
1.
Alternately press the sine, square and triangle pushbuttons and observe the different wave
shapes. Return to the sine function.
2.
Rotate the frequency knob and press up and down range switches while observing the change
in frequency of the displayed waveform.
3.
Push the DUTY CYCLE ON button. Select the SQUARE wave. Rotate the control while
observing the change in the duty cycle of the waveform
4.
Alternately press the 20 dB attenuator button and rotate the AMPLITUDE control to verify
that the waveform amplitude changes. Return these controls to the preset condition.
5.
Push the OFFSET ON button and rotate the OFFSET control. Notice the change in DC
level of the displayed waveform. Return these controls to the preset condition.
3.5 DETAILED OPERATING INSTRUCTIONS
3.5.1 Frequency Setting
The frequency of the generator is changed by turning the FREQUENCY control. The frequency
range is selected by pressing the up or down range pushbuttons. The waveform output frequency is
shown on the LCD display.
3.5.2 Variable Symmetry
The symmetry of the Square waveform can be changed by pushing the DUTY CYCLE ON button
and rotating the DUTY CYCLE knob. A change of symmetry from 15% to 85% can be obtained.
3.5.3 Output Attenuation
The pushbutton attenuator of 20 dB attenuates the waveform by a factor of 10.. In order to achieve
low noise waveforms at low levels, use proper attenuation and keep the amplitude control far from
its maximum CCW position.
3.5.4 Offset Output
Summary of Contents for 4013DDS
Page 1: ...1 Model 4013DDS 12 MHz Sweep Function Generator...
Page 13: ...13...
