The manual for the B&K Model 3050 Audio Sine/Square Wave Generator provides detailed instructions on setting up and operating the device, including selecting frequencies, adjusting output voltage, and using the synchronizing input terminal. It also includes troubleshooting information, such as maintenance tips, adjustments, and precautions to ensure proper functionality and high stability of the generator.
Manual Overview
The B&K Model 3050 is an audio frequency generator using a Wien bridge circuit to produce sine and square wave outputs. It operates over a frequency range of 20Hz to 200kHz, with a sine wave output voltage of 10V RMS. The generator features solid-state circuitry for high stability and a quick warm-up time. It includes a frequency dial with a 4-position range selector and an attenuator for output voltage adjustment from 10V RMS down to zero. The output impedance is approximately 600 ohms. For troubleshooting, the manual emphasizes the importance of ensuring proper power connection and allowing a 3-minute warm-up period. Frequency selection involves setting the frequency dial and range selector to achieve the desired output. Output voltage is adjusted using the OUTPUT LEVEL control, with the attenuator set to the appropriate dB level. Synchronization with external signals is possible through the SYNC INPUT terminal, allowing the generator’s frequency to match an external source within a specified synchronization range. Calibration and adjustments focus on ensuring the correct settings for frequency and output voltage, with board-level guidance provided for maintaining stability and accuracy.
Quick Issues Covered
- Diagnose power-up failures with neon lamp indicator.
- Calibrate frequency using vernier adjustment and range selector.
- Trace circuits with detailed block diagram and schematics.
Overview
The B & K Model 3050 is an audio frequency generator that employs the Wien bridge circuit. It provides a sine wave output voltage of 10V RMS over a frequency range of 20Hz to 200kHz and can generate both sine and square waves. The device is designed for phase and time measurements, characteristic measurements using square waves, and as a low-distortion sine wave signal source for audio frequency measurements. Key features include all solid-state circuitry for high stability, a meter-type frequency dial scale, a 4-position range selector, a 40dB, 20dB, and 0dB attenuator, a low output impedance of 600 ohms, and a synchronizing input terminal. The manual covers general description and features, specifications, operating controls, applications, circuit description, maintenance, adjustments, precautions, block diagram, and warranty service instructions.
Specifications
- FREQUENCY:
- Frequency Range: X1 range: 20Hz-200Hz
- X10 range: 200Hz-2kHz
- X100 range: 2kHz-20kHz
- X1000 range: 20kHz-200kHz
- Frequency Accuracy: ±(3% + 2Hz)
- SINE-WAVE OUTPUT:
- Output Voltage: 10V RMS, ±10% at 1kHz
- Output vs. Frequency: ±1dB or less from 20Hz to 100kHz
- Characteristics (With respect to the level at 1kHz):
- Distortion: 0.5% or less from 50Hz to 100kHz
- 1% or less from 20Hz to 200kHz
- SQUARE-WAVE OUTPUT:
- Output Voltage: 10V p-p or more
- Tilt: 1% or less (at 20Hz)
- Rise and Fall Times: 0.5µs or less
- Overshoot: 3% or less
- Symmetry: Within ±5% (as measured at 1kHz max. output)
- OUTPUT (SINE AND SQUARE-WAVE):
- Output Impedance: Approx. 600 ohms
- Output Attenuator: 0dB, 20dB, 40dB (3 steps)
- Output Vernier: Continuously variable output adjustment (OUTPUT LEVEL); adjusts output from zero to maximum level selected by OUTPUT ATT switch
- EXTERNAL SYNCHRONIZATION:
- Range: Approx. 1% per 1.5V or more
- Max. Input Voltage: 10V RMS
- Input Impedance: Approx. 20,000 ohms
- EFFECT OF ±10% LINE VOLTAGE CHANGES:
- Frequency Drift: Less than ±0.5%
- Output Level Variation: Less than ±0.5dB
- OPERATING TEMPERATURE: 0-50°C at relative humidity of 90% or less
- POWER REQUIREMENTS: 117V AC, 50/60Hz (can be converted to 230V and 100V, 50/60Hz operation)
- Power Consumption: Approx. 7 watts
- DIMENSIONS (overall): 7-3/4"W x 9-5/8"D x 6"H
- WEIGHT: 6.5 pounds
- ACCESSORIES INCLUDED:
- (1) One red test cord with basket clip and banana plug
- (2) One black test cord with basket clip and banana plug
- (3) One 0.1 A fuse
- (4) One copy of instruction manual
Controls & Indicators
The front-panel controls and indicators for the Model 3050 Audio Sine/Square Wave Generator are as follows:
1. NEON LAMP: Lights up when the POWER switch is turned ON.
2. POWER: Slide switch that turns the unit ON and OFF.
3. OUTPUT ATT (dB): Output attenuator with positions for 0dB, 20dB, and 40dB attenuation.
4. GND: Grounding terminal.
5. OUTPUT = 600 O: Output terminal with approximately 600 ohms impedance.
6. WAVE FORM: Output signal waveform selector for sine or square wave output.
7. FREQ RANGE: Range selector switch that serves as a multiplier for frequency setting indicated on the dial scale.
8. OUTPUT LEVEL: Used to continuously vary output voltage from 0-10 volts RMS (sine wave).
9. FREQUENCY: Vernier frequency adjustment dial.
10. SCALE PLATE: Dial scale with graduations of 20-200.
11. POINTER: Indicates frequency setting.
Installation / Setup
Refer to the PDF for details.
Operation
The operation of the Model 3050 involves several basic usage steps:
1. Turning the Unit On:
– Connect the power cord to a power source and turn the power switch to ON. The neon lamp will light up, and a warm-up stabilization period of 3 minutes is recommended.
2. Selection of Desired Frequency:
– Use the FREQUENCY dial with the FREQ RANGE selector switch set at the appropriate position. The pointer on the frequency dial scale should be positioned to the desired frequency setting. The frequency is calculated as the product of the frequency dial scale reading and the frequency range factor.
3. Adjustment of Output Voltage:
– The output voltage can be adjusted using the OUTPUT LEVEL control to any desired voltage within a range of 0 to 10V RMS. The output voltage increases when the control is turned clockwise. The attenuator settings (-20dB or -40dB) affect the output voltage proportionally.
4. Use of Synchronizing Input Terminal:
– Connect an external synchronizing signal source to the SYNC INPUT terminal. The oscillating frequency can be synchronized with the external sine wave signal within a specified synchronizing range.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 1.2 MB)
Bk-precision-3050-instruction manual: Troubleshoot and calibrate the Bk-precision 3050 model efficiently. File size: 1.2 MB.
- Brand: Bk-precision-3050-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-3050-instruction Overview
The Bk-precision-3050 is a versatile and reliable piece of test equipment designed for precise electrical measurements and diagnostics. Ideal for both professional technicians and hobbyists, this device offers accurate readings and robust performance in various testing environments. Whether you are troubleshooting circuits, verifying component functionality, or performing routine maintenance, the Bk-precision-3050 ensures dependable results every time.
Main Features and Specifications
- High-accuracy digital display with clear readouts
- Wide measurement range for voltage, current, and resistance
- Auto-ranging capability for ease of use
- Compact and durable design for field and lab use
- Data hold function to freeze readings for convenience
- Low battery indicator to ensure uninterrupted operation
- Overload protection to safeguard the device and user
Basic Usage and Operation Tips
Before using the Bk-precision-3050, ensure the device is properly calibrated and the batteries are fully charged. Select the appropriate measurement mode based on your testing requirements. Connect the test leads securely to the device and the circuit under test. Use the auto-ranging feature to simplify measurement selection, or manually set the range for more control. Always start with the highest range if unsure of the expected measurement to prevent damage. After completing measurements, turn off the device to conserve battery life.
Troubleshooting and Maintenance
If the device fails to power on, check the battery status and replace if necessary. Inconsistent or erratic readings may indicate worn test leads or poor connections—inspect and replace leads as needed. Clean the device regularly with a soft, dry cloth; avoid using harsh chemicals or solvents. Store the Bk-precision-3050 in a dry, dust-free environment to prolong its lifespan. For persistent issues, refer to the detailed troubleshooting section in the full manual or contact authorized service centers.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-3050. Avoid measuring voltages beyond the device’s specified limits to prevent electric shock or damage. Use insulated test leads and never touch exposed metal parts during operation. Disconnect power from circuits before connecting or disconnecting the device. Follow all local electrical safety regulations and guidelines to ensure safe and effective use.