The manual for the Single Output Programmable DC Power Supply models 9120, 9121, 9122, and 9123 covers setup and operation details, including local and remote control modes, constant voltage and current operation, and overvoltage protection. It also provides troubleshooting guidance through error messages and calibration procedures, with remote interface configuration options such as RS-232 and GPIB/488 for advanced programming and control.
Manual Overview
The manual for the Model 9120, 9121, 9122, and 9123 Single Output Programmable DC Power Supplies focuses on troubleshooting, diagnostics, calibration, and board-level guidance. Troubleshooting involves identifying error messages stored in a 20-location FIFO queue, accessible in both local and remote modes, with errors announced by a beep and an “err” indicator. Calibration procedures are detailed for voltage and current, including zero scale and full gain calibrations, with security codes required for access. The manual provides guidance on using the Errors/Calibrate key for diagnostics and error resolution. Calibration security can be bypassed through specified unsecure procedures. The power supplies operate in constant voltage or constant current modes, with automatic switching and indicators for active modes. Overvoltage protection can be activated locally or remotely. Remote interface options include RS-232 and optional GPIB/488, supporting SCPI and IEEE 488 commands. The manual emphasizes the importance of storing and recalling operating states, which include parameters like voltage limits and trigger values, ensuring consistent performance across power cycles.
Quick Issues Covered
- Diagnose power-up failures using memory location recall procedures.
- Calibrate voltage and current with detailed step-by-step instructions.
- Trace circuits using comprehensive schematics for troubleshooting.
Overview
The product is a single output programmable DC power supply, available in models 9120, 9121, 9122, and 9123. Each model offers different output voltage and current specifications. The power supply can be controlled locally or remotely, with interfaces including RS-232 and optional GPIB/488. It features constant voltage and current modes, overvoltage protection, and the ability to store up to 100 operating states. The manual covers various aspects such as operation modes, calibration procedures, remote interface configuration, and error handling.
Specifications
- Output voltage: 0 to 30.0 V for Model 9120
- Output voltage: 0 to 20.0 V for Model 9121
- Output voltage: 0 to 60.0 V for Model 9122
- Output voltage: 0 to 30.0 V for Model 9123
- Output current: 0 to 3.00 A for Model 9120
- Output current: 0 to 5.00 A for Model 9121
- Output current: 0 to 2.50 A for Model 9122
- Output current: 0 to 5.00 A for Model 9123
- RS-232: Standard for all models
- GPIB/488: Optional for Models 9120, 9121, 9122; Standard for Model 9123
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
The operation of the single output programmable DC power supply includes modes such as constant voltage and constant current. The transition between these modes is automatic, and the active mode is indicated by CV (constant voltage) or CC (constant current) indicators. The power supply can be controlled locally or remotely, with interfaces such as RS-232 and GPIB/488 available. It features overvoltage protection, which can be activated locally or remotely, and has an output on/off function that allows for zero output voltage without turning off the power supply. Additionally, it can store up to 100 operating states, which include parameters like voltage limit, current limit, and overvoltage protection level. Errors are stored in a FIFO queue and can be read in both local and remote modes.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 554.8 KB)
Bk-precision-9123-instruction manual: Guide for technicians to troubleshoot and calibrate the Bk-precision 9123 model. File size: 554.8 KB.
- Brand: Bk-precision-9123-instruction
- Model: MANUAL
- Type: Manual
- File size: 554.8 KB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Bk-precision-9123-instruction MANUAL Overview
The Bk-precision-9123 is a versatile and reliable piece of test equipment designed for accurate electrical measurements and diagnostics. Ideal for both professional technicians and hobbyists, this device provides precise readings for voltage, current, resistance, and other key electrical parameters. Its robust build and user-friendly interface make it suitable for a wide range of applications, including troubleshooting circuits, testing components, and verifying system performance.
Main Features and Specifications
- High-accuracy digital display with clear readouts
- Measurement ranges covering voltage, current, resistance, and continuity
- Auto-ranging capability for ease of use
- Data hold function to freeze readings for analysis
- Overload protection to safeguard the device and user
- Compact and portable design with durable casing
- Battery-powered operation with low battery indicator
Basic Usage and Operation Tips
Before using the Bk-precision-9123, ensure the device is properly calibrated and the battery is sufficiently charged. Select the appropriate measurement mode and range based on the parameter you intend to test. Connect the test leads securely to the device and the circuit under test. Use the data hold function to freeze readings when needed. Always start with the highest measurement range to prevent damage from unexpected high values, then adjust downward for more precise readings.
Troubleshooting and Maintenance
If the device fails to power on, check and replace the batteries as necessary. Ensure test leads are intact and properly connected. In case of inconsistent or erratic readings, verify the calibration and consider recalibrating the unit according to the manual’s instructions. Keep the device clean and store it in a dry environment to prevent damage. Avoid exposing the instrument to extreme temperatures or moisture.
Safety Reminder
Always observe standard electrical safety precautions when using the Bk-precision-9123. Avoid measuring voltages or currents beyond the specified limits. Disconnect power sources before connecting or disconnecting test leads. Use insulated gloves and tools when working with high voltages. Failure to follow safety guidelines may result in electric shock, injury, or damage to the device.