Brand: HP
Category: Power Supply
Document Type: Manual
Language: EN
Manual for 6112A
Uploaded: Nov. 21, 2025, 6:08 p.m.
Manual Publish Date: 1966-11-01
Warranty Information
Refer to the Warranty section for details on claims and service.
The STB Series power supplies are designed for applications requiring extreme stability, regulation, and insensitivity to ambient temperature variations. They are transistorized (all-silicon) and suitable for bench or rack mounting. The supplies can be used as constant voltage or constant current sources, with controls for both voltage and current limit.
Key features include:
- Front and rear terminals
- Single meter for output voltage or current
- Remote programming and sensing capabilities
- Series and parallel operation options
- Auto-tracking for multi-voltage systems
- Overload protection
Installation involves unpacking, mechanical and electrical checks, and connecting to a power source. Operation requires setting controls for the desired mode (constant voltage or constant current) and connecting the load.
Troubleshooting and error codes
| Common Troubles | Possible Cause | Remedy |
|---|---|---|
| No Output Voltage | Line switch OFF | Push Line Switch to ON |
| No Output Voltage | No Input Power | Check AC power source, fuse |
| No Output Voltage | Incorrect strapping | Check strapping for desired operation |
| Low Output Voltage | Voltage control set too low | Adjust Voltage Controls |
| Low Output Voltage | Poor load regulation | Check load leads, use remote sensing |
| Low Output Voltage | Calibration error | Refer to Calibration section |
| Low Output Current | Current limit set too low | Adjust CURRENT control |
| Low Output Current | Incorrect strapping | Check strapping for desired operation |
| Output Fluctuates | Poor line voltage regulation | Check line voltage stability |
| Output Fluctuates | Instability due to load | Refer to load considerations |
| Output Fluctuates | Loose connections | Check all connections |