User`s guide
Table Of Contents
- Agilent U8030A Series Triple Output DC Power Supply
- Table of Contents
- List of Figures
- List of Tables
- Introduction
- Operation and Features
- Constant Voltage Operation
- Constant Current Operation
- 5 V Operation
- Track Mode Operation
- Output On/Off Operation
- Memory Operations
- Memory Output Operations
- Programming the Overvoltage Protection
- Programming the Overcurrent Protection
- Keylock Operation
- System-Related Operations
- Extending the Voltage and Current Range
- Characteristics and Specifications

Operation and Features 2
System-Related Operations
U8030A Series User’s Guide 59
System-Related Operations
Reset to the factory defaults
To reset to factory defaults, press and hold the [All On/Off]
button when powering on the unit until the display shows
dOnE.
• The OVP and OCP are disabled, and their trip levels are
set to maximum (i.e., 10% above the CV and CC rated
values).
• All memory storage locations are cleared.
• The voltage limit value is set to 0, while the current limit
value is set to the maximum rated value.
• The calibration data are not affected by the factory
default reset.
Power-on self-test
A power- on self- test occurs automatically when the power
supply unit is turned on. This test ensures the unit is
operational. The power- on self- test checks for flash data
memory and checks the voltage and current outputs when
the unit is turned off.
NOTE
If the test fails, the display will show Err along with the error code. For
more information, refer to the “List of Error Codes” on page 35.