Measuring frequency and period:

Reminder

We recall that the frequency f=1/T where T is the period of the signal.

Note

As give the following assembly:

Method

  • Do the same work, for an alternative generator.

  • From the GBF, choose a sinusoidal signal, then complete the following table 2:

  • Measure the amplitude (Ucàc), the maximum value Umax, the period T and the frequency f ?

  • What does the value measured by the voltmeter (or multimeter) mean in the three cases?

  • Put the oscilloscope in the AC position,

  • Vary the generator output voltage, observe and draw the signal obtained.

  • Complete table 2 :

Table 2

Sinusoidal

Triangular

Square

The Signal

\(S_h\)=5 ms/div

\(S_v\)=2 v/div

\(S_h\)= 5 ms/div

\(S_v\)= 2 v/div

\(S_h\)= 5ms/div

\(S_v\)= 2 v/div

\(U_{voltmeter}\)

3.37

2.75

6.76

\(U_{c-t-c}\)

8

8

8.4

\(U_{Max}\)

4

4

4.2

\(U_{eff}\)

2.82

2.3

4.2

\(T\)

0.02

0.02

.02

\(f_1/T\) (Hz)

0.02

50

47.61

\(f_{GBF}\) (Hz)

50

50

49.99