Dc Voltage Source Section; Dc Voltage Source Section Block Diagram - Agilent Technologies 4339B Service Manual

DC Voltage Source Section

The voltage source generates a dc voltage ranging from 0 V to 1,000 V. The voltage setting
resolution is 0.1 V when the output is less than and equal to 200 V, and 1 V when the output
is greater than 200 V. The current limit function controls the source output voltage so that the
current owing through the DUT is within the user speci ed range.
Figure 4-4 shows the DC Voltage Source Section block diagram.
Figure 4-4. DC Voltage Source Section Block Diagram
The Main Ampli er ampli es the reference voltage generated by DAC 1 so that the output
voltage is between 0 V and 1,000 V. The Pre-regulator supplies a voltage to the Main Ampli er.
The Pre-regulator voltage varies according to the output voltage in order to minimize energy
consumption of the Main Ampli er. The Current Detector detects the over current to reduce
the output voltage so that the current is within the speci ed range.
4-6 T roubleshooting