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Oscilloscope showing double peak-to-peak

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bilal_oct

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Hi all,

I have connected signal generator to the oscilloscope via amplifier with unity gain just for test. The oscilloscope is showing double peak-to-peak signal even without amplifier. Kindly let me know how this happen logically.
 

bilal_oct said:
Hi all,

I have connected signal generator to the oscilloscope via amplifier with unity gain just for test. The oscilloscope is showing double peak-to-peak signal even without amplifier. Kindly let me know how this happen logically.
Click to expand...

A typical signal generator requires to operate in a designed load. Most often, 50 Ohms.
Typical oscilloscope inputs are high-impedance, like 1 M Ohm, and to get a correct reading, you should load your generator in 50 Ohms, then oscilloscope reading should be closer to expected amplitude.
 
jiripolivka said:
A typical signal generator requires to operate in a designed load. Most often, 50 Ohms.
Typical oscilloscope inputs are high-impedance, like 1 M Ohm, and to get a correct reading, you should load your generator in 50 Ohms, then oscilloscope reading should be closer to expected amplitude.
Click to expand...

Or set the termination on the generator to Hi-Z and no termination is required.
 
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