User manual

page 45
Analog System Lab Kit PRO
7.3 Measurements to be taken 7.5 Exercise Set 7
7.4 What you should submit
experiment 7
Table 7.1: Output Phase as a function of Input Frequency
Table 7.2: Control Voltage as a function of Input Frequency
Figure 7.3: Block Diagram of Frequency Optimizer
Measure the lock range of the system and measure the change in the phase of
the output signal as input frequency is varied within the lock range.
Vary the input frequency and obtain the change in the control voltage and plot
the output. A sample output characteristic of the PLL is shown in Figure 7.2.
Design a Frequency Synthesizer to generate a waveform of 1MHz frequency from a
100kHz crystal as shown in Figure 7.3.
Simulate the circuits and obtain the characteristics of the system.
Take the plots of characteristics from oscilloscope and compare it with
simulation results.
Measure the change in the phase of the output signal as input frequency is
varied within the lock range.
Vary the input frequency and obtain the change in the control voltage. Use
Table 7.2 to record your readings.
1
1
2
3
4
2
S.No. Input Frequency Control Voltage
1
2
3
4
S.No. Input Frequency Output Phase
1
2
3
4
Notes on Experiment 7: