Overall Block Diagram - Agilent Technologies 4339B Service Manual

Overall Block Diagram

Figure 4-2 shows the overall block diagram of the 4339B.
Figure 4-2. 4339B Overall Block Diagram
The voltage source applies dc voltage which is set from the keyboard or by an GPIB command.
The I-V converter which is directly connected to the input converts the current owing into to
a voltage ramp of which slope is proportional to the input current. The CPU calculates the
current from the voltage ramp slope, then calculates the DUT resistance by dividing the source
voltage by the current.
4-4 T roubleshooting