Service manual

8 167
Theory of Operation
TRANSDUCER THEORY
8. Theory of Operation
TRANSDUCER THEORY
The transducer group balances the range resistor current with the DUT current to maintain
a zero potential at the low terminal(Lp) and transforms the DUT impedance, or admittance,
into two AC signals (“Edut” and “Err”).
Figure 8-5 Transducer Group Simplified Block Diagram
The transducer group consists of the following assemblies:
• A3 Hp Amp.
•A4 Lc Amp.
• A5 IV Converter & Lp Amp.
• A6 Vector Generator