Dual Trace CRO
Block diagram of dual trace CRO is shown in the fig. there
are two separate vertical input channels A and B. These use two separate
attenuators and preamplifiers stages. Therefore the amplitude of each input as
viewed on the oscilloscope can be individually controlled. After
pre-amplification the two channels meet at an electronic switch. This has the
ability to pass one channel at time into the vertical amplifier, via the delay
line.
Pic 1