The manual for the Dual Display LCR Meter Model 878A/879 provides detailed instructions for setting up and operating the meter, including selecting measurement functions, testing frequencies, and using features like data hold and auto/manual ranging. It also includes troubleshooting tips, such as ensuring the circuit is de-energized before testing and calibrating the meter for optimal precision.
Manual Overview
The Bk Manual for the Dual Display LCR Meter Models 878A and 879 provides detailed instructions for troubleshooting, diagnostics, calibration, and board-level guidance. The manual emphasizes the importance of safety precautions, such as de-energizing circuits and discharging capacitors before testing. For troubleshooting, the manual outlines a flow for identifying and resolving issues, including checking for short or open connectors and damaged fuses. Error codes and diagnostics are displayed on the LCD, with indicators for auto-ranging, maximum/minimum readings, and tolerance modes. Calibration is crucial for accurate measurements, and users are advised to calibrate the meter before testing to ensure precision. The manual provides step-by-step instructions for measuring inductance, capacitance, and resistance, highlighting the use of the L/C/R function selector and test frequency selection. The meter supports both parallel and series mode measurements and can transfer test data to a PC via an optional RS232C interface. The manual also includes maintenance guidelines to ensure the meter’s longevity and accuracy.
Quick Issues Covered
- Diagnose power-up failures with auto/manual ranging settings.
- Calibrate using relative mode and calibration selection button.
- Trace circuits with detailed schematics in the manual.
Overview
The Dual Display LCR Meter, models 878A and 879, is a hand-held, battery-operated instrument designed for measuring inductance, capacitance, and resistance. It features a microprocessor-controlled system that allows for both parallel and series mode measurements and offers direct and accurate readings with selectable testing frequencies. The meter supports both auto and manual ranging and includes functions such as data hold, maximum, minimum, and average recording, relative mode, tolerance sorting, and frequency selection. It also has an optional RS232C interface for data transfer to a PC and a backlit display for easy reading in low-light conditions. The device can be powered by a 9V battery or an optional 12V AC to DC adaptor.
Specifications
- General Specification
- Electrical Specification
Controls & Indicators
LCD display
Power ON/OFF button
RS232 and Backlit button
Dissipation factor, Quality factor and Phase angle selection button
Test frequency selection button
Inductance, Capacitance and Resistance function selection button. Parallel and series mode selection button
Tolerance mode selection button
Data hold, Maximum, Minimum and Average reading selection button
Range selection button
Relative mode and Calibration selection button
DC 12V adaptor input
Input sockets and Terminals
Installation / Setup
Refer to the PDF for details.
Operation
The manual provides detailed instructions on how to operate the Dual Display LCR Meter, Model 878A/879. To measure inductance, capacitance, or resistance, the user should first turn on the meter by pressing the “POWER” button. For inductance measurement, press the “L/C/R” button to select inductance, insert the inductor into the socket or connect the test clip, select the testing frequency with the “FREQ” button, and use the “D/Q” button to select the Q factor for the secondary display. The display will show the inductance value and quality factor.
For capacitance measurement, follow a similar procedure: select capacitance with the “L/C/R” button, insert the capacitor or connect the test clip, choose the testing frequency, and select the D factor for the secondary display. The display will show the capacitance value and dissipation factor. It is important to discharge the capacitor before testing to avoid electrical hazards.
For resistance measurement, select resistance with the “L/C/R” button, insert the resistor or connect the test clip, and choose the testing frequency. The manual emphasizes the importance of calibrating the meter before testing to achieve optimum precision, especially at the highest or lowest ranges. Additionally, the manual advises against exposing the instrument to direct heat or using it in a dusty environment without regular cleaning.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Read “SAFETY INFORMATION” before using this meter. The meter is for indoor use, at altitudes up to 2,000 m. Use the device only as specified in the manual to ensure protection. De-energize circuits before connecting test leads and discharge capacitors before testing. The meter complies with EN61010 (EC 1010-1) Installation Category II (CAT. I) 50 V, Pollution Degree 2 environment. Use a 9V battery or a 12V AC to DC adaptor that meets IEC safety standards.
Download MANUAL Manual (PDF – 667.0 KB)
Bk-precision-878a-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision-878a model. File size: 667.0 KB.
- Brand: Bk-precision-878a-instruction
- Model: MANUAL
- Type: Manual
- File size: 667.0 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-878a-instruction MANUAL Overview
The Bk-precision-878a is a versatile digital multimeter designed for accurate measurement of electrical parameters in various applications. Ideal for both professional technicians and hobbyists, this device provides reliable readings of voltage, current, resistance, and continuity, making it an essential tool for troubleshooting and testing electronic circuits and electrical systems.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD for clear readings in low-light conditions
- Auto and Manual Range Selection for flexible measurement options
- Data Hold and Relative Mode for convenient data analysis
- Overload Protection to safeguard the device during incorrect connections
- Compact and ergonomic design for comfortable handheld use
- Battery Operated with low battery indicator
Basic Usage and Operation Tips
Before starting measurements, ensure the multimeter is set to the correct function and range. Connect the test leads securely to the device and the circuit under test. For voltage measurements, place the probes parallel to the component, while for current measurements, connect them in series. Use the data hold feature to freeze readings for easier observation. Always start with the highest range if unsure of the expected measurement to prevent damage.
Troubleshooting and Maintenance
If the multimeter displays erratic readings or does not power on, check the battery and replace it if necessary. Inspect the test leads for any signs of wear or damage, and replace them if faulty. Clean the device regularly with a dry cloth, avoiding any liquids or solvents. If the device experiences frequent overload warnings, verify the correct measurement settings and ensure proper connection to the circuit.
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 if the device casing is cracked. Disconnect power before changing test leads or settings to prevent electric shock or damage to the multimeter.