The manual for the BK Precision Adapter Model CR-21 provides detailed instructions on the assembly, wiring scheme, and compatibility with various CRT models, including specifications for pin spacing and keyway dimensions. It also offers information on subscribing to a chart mailing service for updates on CRT types and provides contact details for the B & K-Precision Factory Service Department for further assistance.
Manual Overview
The Bk MANUAL for the BK Precision Adapter Model CR-21 provides detailed instructions for troubleshooting, error diagnostics, and calibration for technicians. The manual outlines a wiring scheme for the assembly with specific pin color assignments, crucial for ensuring correct connections. Troubleshooting flow involves verifying the wiring scheme and checking for continuity across the specified pins. The manual includes error codes related to incorrect voltage or connection issues, guiding technicians to diagnose faults effectively. Calibration and adjustments are necessary for maintaining optimal performance, with emphasis on verifying tube heater voltages, which are standardized at 6.3 volts for various tube types. Board-level guidance includes ensuring the correct fit of the CRT dimensions, with precise measurements for pin spacing and keyway dimensions. Technicians are advised to keep their setup charts updated by subscribing to the B & K-Precision chart mailing service, which provides updates on new CRT types biannually. For further assistance or subscription services, contact information for the B & K-Precision Factory Service Department is provided.
Quick Issues Covered
- Diagnose power-up failures in B&K-Precision Models 467, 470, 480, 490.
- Troubleshoot error codes related to CRT heater voltage issues.
- Use wiring schematics for circuit tracing in CRT adapters.
Overview
Refer to the PDF for details.
Specifications
- CRT dimensions: 25-5/7°
- Pin spacing: 11.5
- Pin circle diameter: 20.32 mm/0.800" nom.
- Keyway width: 3.4 mm/0.135" max.
- Keyway depth: 1.77 mm/0.070" max.
- Outer keyway radius: 26.24 mm/1.033" min.
- Used with B & K-Precision Models: 467, 470, 480, 490
- Tube heater type and voltage: 24VABP22 6.3, 960 CXB22 6.3, 260 EZB22 6.3, 560K CB22 6.3, 660 AB22 6.3, 660CB22 6.3, A51-500X 6.3, A51-510X 6.3, A51-540X 6.3, AS53JDHO0X01 6.3, A56-500X 6.3, A56-510X 6.3, A56-540X 6.3, A66-500X 6.3, A66-501X 6.3, A66-510X 6.3, A66-540X 6.3, A67-260X 6.3, A67-560X 6.3
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
The source provides a wiring scheme for the BK Precision Adapter Model CR-21, including pin color and receptacle information. It also specifies the dimensions and keyway details for fitting CRTs, and lists compatible B & K-Precision models and tube heater types with their voltages. Additionally, it mentions a subscription service for keeping setup charts up-to-date.
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 – 260.6 KB)
Bk-precision-cr-21-instruction manual: Guide for troubleshooting and calibrating the CR-21 model. File size: 260.6 KB.
- Brand: Bk-precision-cr-21-instruction
- Model: MANUAL
- Type: Manual
- File size: 260.6 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-cr-21-instruction Manual Overview
The Bk-precision-cr-21-instruction Model -21- is a versatile and reliable piece of technical equipment designed for precise measurement and testing applications. Ideal for both professional technicians and hobbyists, this device offers accurate readings and robust performance in various electrical and electronic diagnostic tasks.
Main Features and Specifications
- High-precision digital display for clear and accurate readings
- Wide measurement range suitable for voltage, current, and resistance
- Compact and durable design for easy portability and long-term use
- Automatic range selection to simplify operation
- Data hold function to freeze readings for convenience
- Low battery indicator to ensure uninterrupted performance
- Overload protection to safeguard the device and user
Basic Usage and Operation Tips
Before using the Bk-precision-cr-21-instruction Model -21-, ensure the device is properly calibrated and the batteries are fully charged. Select the appropriate measurement mode using the function dial, then connect the test leads securely to the circuit or component under test. Avoid touching the metal parts of the probes during measurement to prevent inaccurate readings. Use the data hold feature to capture and review readings without needing to keep the probes connected continuously.
Troubleshooting and Maintenance
If the device fails to power on, check the battery level and replace batteries if necessary. In case of erratic or inconsistent readings, inspect the test leads for damage and ensure all connections are secure. Clean the device regularly with a soft, dry cloth, avoiding the use of solvents or abrasive materials. Store the equipment in a cool, dry place to prevent moisture damage and extend its lifespan.
Safety Reminder
Always follow proper safety protocols when operating the Bk-precision-cr-21-instruction Model -21-. Avoid using the device on live circuits without appropriate protective gear. Never exceed the specified input limits to prevent damage or injury. Keep the device away from water and high humidity environments to reduce the risk of electric shock or malfunction.