The manual for the Model 9120, 9121, 9122, and 9123 Single Output Programmable DC Power Supply provides detailed instructions on setup, operation, and troubleshooting, including descriptions of local and remote mode operations, memory storage, and error handling. It covers features such as constant voltage/current modes, overvoltage protection, and the use of SCPI and IEEE 488 commands for remote interface configuration.
Manual Overview
The manual for the Bk Model 9120, 9121, 9122, and 9123 Single Output Programmable DC Power Supplies provides detailed instructions on troubleshooting, error diagnostics, calibration, and board-level guidance. Troubleshooting involves identifying error messages stored in a 20-location FIFO queue, which can be accessed in both local and remote modes. Error codes are announced by a beep and an “err” indicator, with detailed definitions available in remote mode. Calibration procedures include voltage and current adjustments, with specific steps for zero scale and full gain calibrations. Calibration security is managed through a security code and unsecure procedures. The power supplies support both constant voltage and constant current modes, automatically switching between them, and feature overvoltage protection that can be activated locally or remotely. Remote control is facilitated through RS-232 and optional GPIB/488 interfaces, supporting SCPI and IEEE 488.2 commands. The manual also describes storing and recalling up to 100 operating states, ensuring consistent performance across sessions.
Quick Issues Covered
- Diagnose power-up failures using memory location settings.
- Error codes for calibration and device-specific issues.
- Schematics for circuit tracing and troubleshooting.
Overview
The product is a single output programmable DC power supply available in models 9120, 9121, 9122, and 9123. It features an output voltage range of 0 to 30.0 V for model 9120, 0 to 20.0 V for model 9121, 0 to 60.0 V for model 9122, and 0 to 30.0 V for model 9123. The output current ranges are 0 to 3.00 A for model 9120, 0 to 5.00 A for model 9121, 0 to 2.50 A for model 9122, and 0 to 5.00 A for model 9123. The power supply can be controlled locally or remotely, with available interfaces including RS-232 and optional GPIB/488 for certain models. It supports SCPI commands, IEEE 488.2 commands, and IEEE 488 bus commands for remote interface mode. The manual covers features such as constant voltage/current modes, overvoltage protection, output on/off functionality, and storage for 100 operating states. Additionally, it provides information on error messages and local mode operation.
Specifications
- Output voltage is: 0 to 30.0 V for Model 9120
- 0 to 20.0 V for Model 9121
- 0 to 60.0 V for Model 9122
- 0 to 30.0 V for Model 9123
- Output current is: 0 to 3.00 A for Model 9120
- 0 to 5.00 A for Model 9121
- 0 to 2.50 A for Model 9122
- 0 to 5.00 A for Model 9123
- Available interfaces for 912x power supply models:
- RS-232 Standard
- GPIB/488 Optional for 9120, 9121, 9122; Standard for 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-9122-instruction manual for troubleshooting and calibrating the 9122 model. File size: 554.8 KB.
- Brand: Bk-precision-9122-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-9122-instruction MANUAL Overview
The Bk-precision-9122 is a versatile digital multimeter designed for precise electrical measurements in both professional and hobbyist environments. This device offers accurate readings of voltage, current, resistance, and other electrical parameters, making it an essential tool for troubleshooting, testing, and maintenance of electronic circuits and equipment.
Main Features and Specifications
- Model: -9122-
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD for clear readings
- Auto-ranging capability for ease of use
- Data Hold and Min/Max recording functions
- Input protection to prevent damage from overloads
- Battery-powered for portable operation
- Compact and ergonomic design for comfortable handling
Basic Usage and Operation Tips
Before using the Bk-precision-9122, ensure the device is powered with fresh batteries. Select the appropriate measurement mode using the rotary switch. Connect the test leads securely to the device and the circuit under test. For accurate readings, observe polarity when measuring DC voltage or current. Utilize the data hold function to freeze readings for easier analysis. Always start measurements at the highest range if unsure of the expected value to protect the device.
Troubleshooting and Maintenance
If the device displays erratic readings or fails to power on, check the battery condition and replace if necessary. Inspect test leads for damage or wear and replace if faulty. Clean the exterior with a soft, dry cloth and avoid exposure to moisture or extreme temperatures. If the multimeter does not respond correctly, refer to the manual’s troubleshooting section for detailed diagnostics or contact authorized service centers.
Safety Reminder
Always observe safety precautions when working with electrical equipment. Do not exceed the maximum input limits specified in the manual. Avoid measuring live circuits with damaged test leads or a malfunctioning device. Disconnect power before changing measurement settings or test leads to prevent electric shock or damage. Use the Bk-precision-9122 only as intended and follow all instructions carefully to ensure safe operation.