The manual for the Bk 1685B, 1687B, and 1688B Switching DC Power Supply provides detailed instructions for setup, operation, and troubleshooting, including safety precautions, control modes, and remote control options. It also covers fault protection mechanisms like overvoltage, overtemperature, and overload protection, as well as fuse replacement procedures.
Manual Overview
The Bk MANUAL for the 1685B, 1687B, and 1688B Switching DC Power Supplies provides detailed guidance on troubleshooting, diagnostics, and maintenance. The troubleshooting section focuses on common issues such as overvoltage (OVP), overtemperature (OTP), and overload protection (OLP), offering specific steps for each. Error codes are explained to aid in diagnostics, with emphasis on identifying and resolving faults efficiently. Calibration and adjustments require careful attention to detail, with instructions provided for ensuring accurate output and maintaining device integrity. Board-level guidance is restricted to qualified personnel, emphasizing the importance of safety and proper handling of electrostatic discharge (ESD)-sensitive components. The manual advises against substituting parts or unauthorized modifications, recommending that all service and repairs be conducted by B&K Precision to maintain safety standards. Proper grounding and adherence to safety precautions are critical to prevent electrical shock and equipment damage.
Quick Issues Covered
- Diagnose OVP, OTP, and OLP protection faults.
- Calibrate using control modes: Normal, Preset, SQ.
- Trace circuits with detailed schematics for troubleshooting.
Overview
The product is a Switching DC Power Supply, with models 1685B, 1687B, and 1688B. The manual covers safety precautions, installation, operation, service, and repair instructions. It includes sections on safety summary, controls and indicators, operating instructions, remote control, faults and troubleshooting, specifications, certification, and service information.
Specifications
Refer to the PDF for details.
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
The following safety precautions are explicitly present in the manual:
1. Ground the Instrument: The instrument chassis and cabinet must be connected to an electrical ground to minimize shock hazard. The instrument is grounded through the ground conductor of the supplied three-conductor AC power cable, which must be plugged into an approved three-conductor electrical outlet. Altering the ground connection can result in electric shock.
2. Do Not Operate in an Explosive Atmosphere: The instrument should not be operated in the presence of flammable gases or fumes as it constitutes a safety hazard.
3. Keep Away from Live Circuits: Instrument covers must not be removed by operating personnel. Component replacement and internal adjustments should be made by qualified maintenance personnel. The power cord should be disconnected before removing instrument covers and replacing components. Dangerous voltages may exist even with the power cable removed.
4. Do Not Service or Adjust Alone: Internal service or adjustment should not be attempted unless another person capable of rendering first aid and resuscitation is present.
5. Do Not Substitute Parts or Modify the Instrument: Unauthorized modifications or installation of substitute parts should not be performed. The instrument should be returned to B&K Precision for service and repair to maintain safety features.
Warnings and cautions are provided throughout the manual to denote hazards. A warning statement highlights procedures, practices, or conditions that could result in injury or death if not followed correctly. A caution statement highlights procedures, practices, or conditions that could result in damage to parts or the entire product if not followed correctly.
Specific warnings include:
– Do not alter the ground connection to avoid electric shock.
– Disconnect the power cord before removing covers to avoid electrical shock hazard.
Specific cautions include:
– Check the rear panel AC line voltage indicator before connecting the line cord to the AC mains to avoid destroying AC line fuses. Replace fuses only with those of specified voltage and current ratings for continued fire protection.
– Follow proper procedures for handling, storing, and transporting parts and subassemblies containing ESD-sensitive components to avoid damage.
Download MANUAL Manual (PDF – 1.2 MB)
Bk-Precision 1685B/1678B/1688B Manual: Provides instructions for troubleshooting, calibration, and assembly of power supply units.
- Brand: Bk-precision-1685b-1678b-1688b-instruction
- Model: MANUAL
- Type: Manual
- File size: 1.2 MB
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-1685b-1678b-1688b Instruction Manual Overview
The Bk-precision-1685b-1678b-1688b series are versatile digital multimeters designed for accurate electrical measurements in both professional and hobbyist settings. These instruments provide reliable readings for voltage, current, resistance, and other key electrical parameters, making them essential tools for troubleshooting, testing, and maintenance of electronic circuits and devices.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Temperature
- Large backlit LCD display for clear readings in low-light conditions
- Auto and manual ranging capabilities
- Data hold and relative measurement functions
- Overload protection on all ranges
- Low battery indication
- Compact and ergonomic design for easy handling
- Includes test leads, thermocouple probe, and user manual (PDF)
Basic Usage and Operation Tips
Before using the multimeter, ensure the device is powered on and the correct measurement mode is selected. Connect the test leads to the appropriate input jacks and probe the circuit carefully. For voltage measurements, use parallel connection; for current, connect in series. Always start with the highest range to prevent damage and switch to a lower range for more precise readings. Utilize the data hold function to freeze readings when necessary.
Troubleshooting and Maintenance
If the multimeter displays erratic readings or fails to power on, check the battery and replace it if necessary. Ensure test leads are intact and properly connected. Clean the device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the device experiences frequent overloads, verify the measurement settings and circuit conditions to prevent damage.
Safety Reminder
Always follow standard electrical safety practices when using the multimeter. Do not exceed the specified input limits to avoid electric shock or damage to the instrument. Use insulated test leads and avoid contact with live circuits. Disconnect power before making resistance or continuity measurements. Keep the device away from flammable materials and store it in a safe, dry place.