plug-in is used to increase the sensitivity of the counter, providing
measurement of signals as small as 1 millivolt. It is capable of amplifying
both sinusoidal as well as pulsed signals.
Four functional circuits
comprise the plug-in; a preamplifier, attenuator, video amplifier and output
You should now be prepared to complete the lesson exercise.
miss any of the questions or do not fully understand, re-study the portion
of the lesson about which you are in doubt before going on to the next