Duty Cycle Control - BK Precision 4017A Manual De Instrucciones

10mhz generador de barrido
Tabla de contenido
Idiomas disponibles

Idiomas disponibles

6. Remember that the output signal swing of the generator is limited
to ±10 volts open circuited or ±5 volts into 50 Ω, and applies to
the combined peak-to-peak signal and DC offset. Clipping occurs
slightly above these levels. Fig. 3 illustrates the various operating
conditions encountered when using the DC offset. If the desired
output signal is large or if a large DC offset is required, an
should be used to make sure that the desired
oscilloscope
signal is obtained without undesirable clipping.

DUTY CYCLE CONTROL

The DUTY CYCLE control can be used to alter the symmetry
of the output waveform, to produce waveshapes such as those
shown in Fig. 4. For a square wave, symmetry variation amounts
to changing the duty cycle (ratio of "high" to "low" time),
effectively converting the instrument into a pulse generator. For a
triangle wave, the result is a ramp, and with a sine wave, a
distorted waveshape called a slewed sine is produced. The Model
4017A provides for symmetry variation from 15% to 85%.
1. Select the waveform desired either SINE, SQUARE or
TRIANGLE.
2. Engage the DUTY CYCLE switch (17) and adjust the DUTY
CYCLE control (10) for the desired waveshape. Clockwise
rotation from center results in an increase in square wave duty
cycle, and changes the sine and triangle waves as shown in
the top waveform of each pair of Fig. 4. Counter-clockwise
rotation results in the bottom waveform in each pair.
3. Varying the duty cycle setting results in a slight change in
frequency. Adjust the COARSE and FINE frequency
controls as required.
OPERATING INSTRUCTIONS
11
Figure 4. Effects of Symmetry
Variation.

Hide quick links:

Capítulos

Tabla de contenido
loading

Tabla de contenido