The manual for the Bk Model 9120, 9121, 9122, and 9123 single output programmable DC power supplies covers setup, operation, and troubleshooting, including local and remote control modes, constant voltage/current operation, and overvoltage protection. It provides detailed instructions on using the front panel, storing and recalling operating states, configuring remote interfaces like RS-232 and GPIB, and handling error messages.
Manual Overview
The Bk Manual for Models 9120, 9121, 9122, and 9123 Single Output Programmable DC Power Supplies provides detailed guidance on troubleshooting, error diagnostics, calibration, and board-level adjustments. The manual emphasizes the use of error codes and diagnostics, which are stored in a 20-location FIFO queue, accessible in both local and remote modes. Calibration procedures are outlined for voltage and current, including zero scale and full gain adjustments, with a focus on maintaining accuracy and reliability. The manual also details the use of SCPI and IEEE 488.2 commands for remote interface operations, highlighting the importance of proper configuration for RS-232 and GPIB/488 interfaces. For troubleshooting, the manual provides a systematic approach to identifying and resolving issues, with specific error messages and self-test errors documented for efficient problem-solving. Calibration security is addressed with procedures for securing and unsecuring the calibration process, ensuring the integrity of the power supply’s performance.
Quick Issues Covered
- Diagnose power-up failures using stored state recall procedures.
- Access error codes via local or remote operation for troubleshooting.
- Use schematics for circuit tracing and detailed diagnostics.
Overview
The product is a single output programmable DC power supply available in four models: 9120, 9121, 9122, and 9123. Each model offers different output voltage and current specifications. The power supplies can be controlled locally or remotely, with interfaces including RS-232 and optionally GPIB/488. They support SCPI, IEEE 488.2, and IEEE 488 bus commands. Key features include constant voltage/current modes, overvoltage protection, output on/off functionality, storage for 100 operating states, and error message handling. The manual covers various aspects such as operation modes, calibration procedures, remote interface configuration, and error management.
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
- Interfaces: RS-232 Standard for all models
- Interfaces: GPIB/488 Optional for Models 9120, 9121, 9122
- Interfaces: GPIB/488 Standard for Model 9123
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
The manual describes the operation of the single output programmable DC power supply models 9120, 9121, 9122, and 9123. These power supplies can operate in either constant voltage or constant current modes, with automatic switching between the two. The active mode is indicated by CV (constant voltage) or CC (constant current) indicators. The power supplies feature overvoltage protection, which can be activated locally or remotely, and an output on/off function that allows for zero output voltage without turning off the power supply. The devices can store up to 100 operating states, identified by location number and name, and include parameters like voltage limit, current limit, and overvoltage protection level. Upon powering on, the power supply defaults to state 0, named “power up.” Error messages are stored in a 20-location 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-9120-instruction MANUAL PDF: Guide for technicians to troubleshoot and calibrate the Bk-precision 9120 model. File size: 554.8 KB.
- Brand: Bk-precision-9120-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-9120-instruction MANUAL Overview
The Bk-precision-9120 is a versatile and reliable piece of test equipment designed for precise electrical measurements and diagnostics. Ideal for both laboratory and field applications, this device offers accurate voltage, current, and resistance readings, making it an essential tool for engineers, technicians, and hobbyists working with electronic circuits and components.
Main Features and Specifications
- High-accuracy digital display with clear readout
- Measurement ranges for voltage, current, and resistance
- Auto-ranging capability for ease of use
- Compact and durable design suitable for portable use
- Overload protection to safeguard internal components
- Data hold function to freeze readings on the display
- Low battery indicator for timely power replacement
Basic Usage and Operation Tips
Before operating the Bk-precision-9120, ensure the device is properly calibrated and the batteries are fully charged. Connect the test leads securely to the device and the circuit under test. Select the appropriate measurement mode and range for your application. When measuring voltage or current, always start with the highest range and work downwards to avoid overload. Use the data hold feature to capture readings for later analysis. After use, turn off the device to conserve battery life.
Troubleshooting and Maintenance
If the device does not power on, check the battery condition and replace if necessary. In case of erratic readings, verify that the test leads are intact and properly connected. Clean the device regularly with a soft, dry cloth and avoid exposure to moisture or extreme temperatures. For persistent issues, refer to the detailed troubleshooting section in the manual or contact authorized service centers.
Safety Reminder
Always observe standard electrical safety precautions when using the Bk-precision-9120. Do not exceed the specified input limits to prevent damage or personal injury. Avoid contact with live circuits and use insulated test leads. Ensure the device is powered off before connecting or disconnecting test leads. Proper use and maintenance will ensure safe and reliable operation.