7.Demonstration
65
Figure 7-1 Measure Frequency and PK-PK value for a given signal
Example 2: Gain of an Amplifier in a Metering Circuit
The purpose of this example is to work out the Gain of an Amplifier in a Metering
Circuit. First we use Oscilloscope to measure the amplitude of input signal and output
signal from the circuit, then to work out the Gain by using given formulas.
Set the probe menu attenuation coefficient as
10X
and that of the switch in the probe
as
10X
(see "
How to Set the Probe Attenuation Coefficient
Connect the oscilloscope CH1 channel with the circuit signal input end and the CH2
channel to the output end.
Operation Steps:
(1)
Press the
Autoset
button and the oscilloscope will automatically adjust the
waveforms of the two channels into the proper display state.
(2)
Press the
Measure
button.
(3)
Select
Add
in the bottom menu.
(4)
Select
Source
in the right menu; select
①
in the left menu.
(5)
Select
Type
in the right menu; select
PK-PK
in the left menu.
(6)
Select
Add
in the right menu.
(7)
Select
Source
in the right menu; select
②
in the left menu.
(8)
Select
Add
in the right menu.
(9)
Read Vp of Channel 1 and Channel 2 from the measure window at the bottom left
of the screen (see
(10)
Calculate the amplifier gain with the following formulas.
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