Question
Download Solution PDFThe bandwidth of CRO is the range of frequencies over which gain of _________________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFBandwidth of Cathode Ray Oscilloscope (CRO)
The bandwidth of an oscilloscope detects the range of frequencies that can be accurately reproduced on the CRT screen. The greater the bandwidth, the wider the range of observed frequencies.
The bandwidth of an oscilloscope is the range of frequencies over which the gain of the vertical amplifier stays within 3 db of the mid-band frequency gain, as shown in the below figure.
The amplifier stages used are generally wide-band amplifiers to pass faithfully the entire band of frequencies to be measured.
Rise time is defined as the time required for the edge to rise from 10–90% of its maximum amplitude. An approximate relation is given as follows:
tr × Bandwidth = 0.35
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