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/current operation, and overvoltage protection. It also provides troubleshooting information with error messages, calibration procedures, and remote interface configurations such as RS-232 and GPIB/488.
Manual Overview
The manual for the Bk Model 9120, 9121, 9122, and 9123 Single Output Programmable DC Power Supply provides detailed instructions for troubleshooting, diagnostics, calibration, and board-level guidance. Troubleshooting involves identifying error codes stored in a 20-location FIFO queue, accessible in both local and remote modes, with errors announced by a beep and the “err” indicator. Calibration procedures include voltage and current calibration, with specific steps for zero scale and full gain adjustments. The manual outlines the use of SCPI and IEEE 488.2 commands for remote interface configuration, supporting both RS-232 and GPIB/488 interfaces. The power supply operates in constant voltage or constant current modes, with automatic switching and indicators for each mode. Overvoltage protection can be activated locally or remotely, and the device allows storage of up to 100 operating states, which include parameters like voltage and current limits. The manual emphasizes the importance of the memory key for storing and recalling states, with specific instructions for using memory locations during power-up.
Quick Issues Covered
- Diagnose power-up failures using memory location recall procedures.
- Identify and resolve calibration errors for accurate output.
- Trace circuits with detailed schematics for Model 912x.
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 and supports interfaces such as RS-232 and GPIB/488. It operates in constant voltage or constant current modes and features overvoltage protection, output on/off control, and storage for 100 operating states. The manual covers general information, features, 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
Refer to the PDF for details.
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-9121-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision 9121 model.
- Brand: Bk-precision-9121-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-9121-instruction Overview
The Bk-precision-9121 is a versatile digital multimeter designed for accurate electrical measurements in both professional and hobbyist environments. This device provides reliable readings of voltage, current, resistance, and continuity, making it an essential tool for troubleshooting and testing electrical circuits.
Main Features and Specifications
- Measurement Types: AC/DC Voltage, AC/DC Current, Resistance, Continuity
- Display: Large backlit LCD for easy reading in low-light conditions
- Auto-ranging capability for quick and precise measurements
- Data hold function to freeze readings on the display
- Overload protection to safeguard the device during improper use
- Compact and ergonomic design for comfortable handheld operation
- Battery-powered for portability and convenience
Basic Usage and Operation Tips
Before using the Bk-precision-9121, ensure the device is powered on and the battery is sufficiently charged. Select the appropriate measurement mode using the rotary dial. Connect the test leads to the circuit or component under test, observing correct polarity when measuring DC voltage or current. Use the data hold feature to capture readings for later reference. Always start with the highest range setting if the expected measurement value is unknown to prevent damage to the meter.
Troubleshooting and Maintenance
If the device displays erratic readings or fails to power on, check the battery status and replace if necessary. Inspect test leads for damage or wear and replace them if faulty. Clean the exterior of the multimeter regularly with a soft, dry cloth; avoid using solvents or abrasive cleaners. Store the device in a dry, dust-free environment to prolong its lifespan. If problems persist, consult the full manual for detailed troubleshooting guidance.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-9121. Avoid measuring voltages beyond the device’s specified limits and never touch exposed metal parts during operation. Use insulated test leads and wear appropriate personal protective equipment when working with high voltages. Disconnect power from circuits before testing resistance or continuity to prevent damage and ensure user safety.