The manual for the 1689 and 1690 DC Regulated Power Supplies provides detailed instructions for setup, operation, and troubleshooting, emphasizing safety precautions, proper grounding, and avoiding use with equipment requiring high surge currents. It also covers features such as overload protection, variable output voltage, and a temperature-sensitive cooling fan, while advising on correct connection procedures and handling of the unit to prevent damage or injury.
Manual Overview
The Bk 1689 and 1690 DC Regulated Power Supplies are designed for various DC-operated equipment, particularly radio devices. They provide a variable voltage output from 1V to 15V with a maximum current of 28A at 13.8V. Key features include overload protection through a current foldback circuit, high RFI stability, and a variable speed cooling fan. For troubleshooting, the overload indicator lights up when the unit is overloaded, requiring immediate disconnection of the load to prevent damage. Calibration is achieved using the voltage adjustment knob, which allows precise voltage settings. The units have multiple DC output terminals, including two pairs of 3A snap-in connections and a 28A screw-on terminal. Proper installation involves grounding the unit and ensuring it is placed in a well-ventilated area away from high humidity and direct sunlight. The power supply should be turned on before the connected equipment and turned off after the equipment to ensure safe operation.
Quick Issues Covered
- Diagnose overload with indicator light for protection circuit activation.
- Calibrate voltage using adjustment knob for 1-15V output range.
- Trace circuit using schematics for troubleshooting power-up failures.
Overview
The 1689 and 1690 DC Regulated Power Supplies provide a variable voltage output from 1V to 15V and up to 28A (at 13.8V) of continuous operation. They are designed for use with DC-operated radio equipment and feature overload protection, high RFI stability, a variable speed cooling fan, and multiple DC output terminals. The manual includes safety precautions, installation instructions, and operational guidance to prevent misuse and ensure proper functioning.
Specifications
- OUTPUT VOLTAGE DC 1-15V Variable
- OUTPUT CURRENT 28A (at 13.8V/)
- RIPPLE & NOISE smvV (peak to peak)
- LINE REGULATION 5mvV (+2% Load)
- LOAD REGULATION SOmV (0-100% Load)
- POWER SOURCE 120V / 60Hz
- VOLTMETER TYPE Precision Analog Digital LED
- AMMETER TYPE Precision Analog Digital LED
- COOLING FAN Temperature Sensitive Variable Speed Cooling Fan
- DIMENSION (WxHxD) 9.84" x 5.5" x 8.86" (250mm x 140mm x 225mm)
- WEIGHT 19.9 Ibs. (9 Kg)
- ACCESSORIES Wavetek Model 278
Controls & Indicators
The front-panel controls and indicators include:
– Power Switch: Switches the unit on and off.
– Power LED: Lights up when the unit is turned on.
– Meter: Indicates current and voltage.
– Overload Indicator: Lights up when the overload protection circuit is activated.
– Voltage Adjustment Knob: Adjusts the output voltage from 1-15V, with a one-touch 13.8V setting at the clicking point.
– 3A Output Terminal: Two pairs of easy snap-in output terminals for 3A maximum output, with red as positive (+) and black as negative (-).
– 28A Output Terminal: Screw-on high capacity output terminal, with red as positive (+) and black as negative (-).
Installation / Setup
Ensure the unit is properly grounded to prevent electric shock from high voltage caused by leakage or lightning. Do not place the unit in high humidity, dusty, or sunny areas. Place the unit in a location that allows free air circulation and do not place it close to TV sets or CRT monitors. Connect the unit directly to an AC outlet; using distribution cables may heat plugs and cables. Place the unit horizontally for accurate meter readings.
Operation
The 1689 and 1690 DC Regulated Power Supplies are designed for use with DC operated radio equipment. They provide a variable voltage output from 1V to 15V and can deliver up to 28A of continuous operation at 13.8V. The power supplies feature overload protection, high RFI stability, a variable speed cooling fan, and multiple DC output terminals.
To operate the unit, ensure it is properly grounded and placed in a location that allows free air circulation. Connect the unit directly to an AC outlet, avoiding extension cords. Use the power switch to turn the unit on or off. Adjust the output voltage using the voltage adjustment knob, which has a one-touch 13.8V setting. Connect the output terminals to the equipment, ensuring correct polarity. Turn on the power supply before turning on the equipment, and turn off the equipment before turning off the power supply.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
The manual provides several safety warnings and precautions:
1. Do not use the unit for equipment that requires higher current than the unit can provide.
2. Do not use the unit for equipment that requires high current at start-up, such as lamps and motorized equipment, as it may damage the unit.
3. Do not replace the fuse before determining why it opened, and replace it with the correct value only.
4. Never remove the metal cover of the power supply while AC power is connected.
5. Never touch the power supply with wet hands.
6. Never operate the power supply if foreign materials such as metallic objects, water, or other debris have fallen inside.
7. Never operate a unit that has been damaged, as the voltage regulation circuitry may be disabled, potentially causing high DC voltage that could result in damage or injury.
8. Never allow foreign objects to touch across the DC Power Output terminals.
9. If inspecting the interior of the power supply, ensure it has cooled down completely as some components may be very hot.
10. Ensure the unit is properly grounded to prevent electric shock from high voltage caused by leakage or lightning.
11. Do not place the unit in high humidity, dusty, or sunny areas.
12. Place the unit in a location that allows free air circulation and not close to TV sets or CRT monitors.
13. Connect the unit directly to an AC outlet, as using distribution cables may heat plugs and cables.
14. Place the unit horizontally for accurate meter readings.
Download MANUAL Manual (PDF – 112.7 KB)
Bk-precision-1689-instruction manual: Guide for troubleshooting and calibrating the Bk-precision 1689 model. File size: 112.7 KB.
- Brand: Bk-precision-1689-instruction
- Model: MANUAL
- Type: Manual
- File size: 112.7 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-1689-instruction Overview
The Bk-precision-1689 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 continuity, making it an essential tool for troubleshooting electrical circuits, testing components, and performing routine maintenance on electronic equipment.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD with clear numeric readout
- Auto and Manual Range Selection for flexible operation
- Data Hold and Relative Measurement modes for convenience
- Overload Protection to safeguard the device and user
- Battery Powered with low battery indicator
- Compact and lightweight design for portability
Basic Usage and Operation Tips
Before use, ensure the multimeter’s battery is fully charged or replaced if low. Select the appropriate measurement mode using the rotary switch. Connect the test leads securely to the device and the circuit under test, observing correct polarity. For voltage measurements, connect the probes in parallel with the circuit; for current measurements, connect them in series. Use the data hold function to freeze readings when needed. Always start with the highest range if unsure of the measurement level to avoid damage.
Troubleshooting and Maintenance
If the multimeter 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 device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the device does not respond correctly, reset by turning off and on, or consult the detailed manual for calibration procedures.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-1689. Do not exceed the maximum input limits specified in the manual to prevent electric shock or damage. Use insulated test leads and avoid contact with live circuits during measurements. Disconnect power before opening the device or performing maintenance. Proper handling ensures safe and reliable operation.