1.8 Microprocessor ControlThe bold arrows in Fig. 1-2 indicate microprocessor control path in theVP-7721A. Benefits from the use of a microprocessor are describedlater. One inconvenience was the interference that might be caused byclock signals, which the VP-7721A has successfully overcome by ceasingclock signals during measurement.1.9 Floating InputThe input terminals of the measurement section in the VP-772LA can bearranged for both floating and non-floating connection. The floatingconnection permits measurement of amplifiers with floating outputconfiguration such as so-called BTL (balanced, transformer-less) typeamplifier.1-5

Panasonic VP-7721A Manual