Victor 86 Series Digital Multimeter User Manual

1. Introduction

The Victor 86 Series Digital Multimeter is a high-performance, auto-ranging 4 1/2 digit instrument designed for precise electrical measurements. Featuring a clear LCD with 21mm high figures and a 22000-count display, it offers excellent readability. This multimeter includes a USB interface for PC connection, enabling convenient data transfer and analysis. It is an ideal tool for laboratories, factories, maintenance, and repair applications.

Key features include:

• High-resolution LCD with 22000 counts and analog bar graph display.
• Automatic and manual ranging for versatile measurements.
• Measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Temperature.
• Diode and Continuity test functions.
• Data Hold, Max/Min value recording.
• USB interface for computer communication.
• Auto Power Off function to conserve battery life.
• Full function protection and anti-high voltage circuit design.

Figure 1.1: Victor 86B Digital Multimeter

Figure 1.2: Victor 86D Digital Multimeter

2. Safety Information

This instrument complies with IEC61010 safety standards for double insulation, overvoltage CAT IV 600V, CAT III 1000V, and pollution level II. Please read this manual carefully before operation to ensure safe use.

2.1. General Safety Warnings

• To avoid electric shock, exercise caution when measuring voltages higher than 30V, currents higher than 10mA, AC power lines with inductive loads, and during power fluctuations.
• Before measuring, ensure the function knob is set to the correct range, test leads are connected reliably, and insulation is proper.
• Use only the provided test leads. If damaged, replace with test leads of the same type and electrical specification.
• Do not replace internal fuses or batteries with unconfirmed types. Use only specified replacements. Ensure no signal is present at the input terminal before replacement.
• When measuring electricity, avoid direct contact with ground and do not touch exposed metal terminals, output sockets, or lead clamps with ground potential. Use insulated materials like dry cloth, rubber overshoes, or rubber cushions.
• Do not store or use the instrument in high humidity, high temperature, combustible, explosive, or strong magnetic environments.
• Avoid measuring voltages beyond the specified range limits to prevent instrument damage and electric shock.
• Do not measure any voltage when connecting to the current terminal to avoid damaging the instrument.
• Do not attempt to calibrate or repair the instrument unless you are a specially trained or qualified professional.
• Do not switch the function/range selection knob while measuring.
• If the LCD displays a low battery indicator, replace the battery promptly to maintain measurement accuracy.
• Do not attempt to modify the internal circuit.

2.2. Safety Symbol Description

3. Package Contents

Carefully unpack the product and check for the following items:

• Digital Multimeter (1 PC)
• Holster (1 PC)
• Operation Manual (1 PC)
• Test Leads (1 SET)
• Crocodile Clip (1 pair)
• Temperature Probe (K Type Thermocouple) (1 PC)
• USB Interface Jack (1 PC)
• 1.5V AAA Battery (4 PCS)
• Color box
• Certificate of conformity
• Adapter (86D only)

Figure 3.1: Packaging Accessories (for VC 86D model)

4. Product Overview

The Victor 86 Series Digital Multimeter features a robust design with a large LCD for clear readings and intuitive controls.

4.1. Front Panel Description (VC 86D Model)

Figure 4.1: Front and Back Panel Components (VC 86D)

1. LCD display screen
2. Frequency/Duty Cycle button
3. Max/Min button
4. Select button
5. Range knob
6. 10A current socket
7. µA/mA current socket
8. NCV induction point
9. Data retention/backlight key
10. Automatic/manual range button
11. USB communication/relative value button
12. V/Ω and other sockets
13. Public Jack (COM)
14. Pen slot
15. USB jack
16. Support (kickstand)

4.2. LCD Display Screen

The LCD provides a comprehensive view of measurement data and instrument status.

Figure 4.2: Large Screen Backlight Display

Figure 4.3: Detailed Features

• Knob button design: Automatic range knob, clear gear, and strong sense of pause. Rubber buttons with comfortable and clear handwriting for easy operation.
• Measurement input port: Good insertion and removal, marked with maximum value display, quick response.
• Instrument bracket: The back of the instrument is equipped with a bracket design, allowing it to be placed on the desktop, freeing hands and making operation convenient.
• USB communication: The instrument is equipped with a USB interface, which can be connected to a computer for communication, facilitating data observation and storage.

5. Operation Instructions

5.1. Button Functions

• SELECT: When multiple measuring functions are compounded at one range, press this button to switch between functions.
• RANGE: Toggles between Auto Range and Manual Range. Default is Auto Range. Press once to switch to Manual Range; subsequent presses cycle through ranges. Long press (over 2 seconds) to return to Auto Range. Not applicable for Frequency and Capacitance ranges.
• MAX/MIN: Displays maximum and minimum measured values.
• HZ/DUTY REL:
  • In Frequency Range: Switches between Frequency and Duty Cycle.
  • In AC/DC Voltage or Current Range: Switches between Voltage/Frequency/Duty Circle or Current/Frequency/Duty Circle modes.
  • In Capacitor Range: Short press to measure relative value (REL). The relative value measurement will be locked in the current range. If it exceeds the range, "OL" will be displayed.
• HOLD: Data Hold button. Press once to hold the current LCD value. Press again to exit.
• BL/USB: Long press (over 2 seconds) to activate data transmission (USB symbol appears on LCD). Long press again to deactivate. Short press to toggle backlight.

5.2. ACV/DCV Measurement

1. Turn the function/range selection knob to mV or V. The default is DCV measurement. To measure ACV, press the SELECT button.
2. Insert the red test lead into the VΩHz terminal and the black test lead into the COM terminal.
3. Connect the test leads in parallel to the circuit or power source. The polarity of the red test lead and the measured voltage value will be displayed.
4. In Manual Range mode, if "OL" is displayed, select a higher range.
5. Read the value from the LCD.

Note:

• Do not measure voltage higher than DC 1000V or AC 750V.
• When measuring high voltage, exercise extreme caution. Disconnect test leads immediately after measurement.

Figure 5.1: NCV Non-Contact Voltage Measurement (Available on 86B/86C/86D models)

NCV induction voltage range: 48V~220V. The stronger the induced AC voltage, the faster the indicator light flashes and the buzzer sounds.

5.3. DCA/ACA Measurement

1. Turn the function/range selection knob to µA, mA, or A range. Default is DCA. To measure ACA, press the SELECT button.
2. Insert the red test lead into the µA/mA or 10A terminal and the black test lead into the COM terminal.
3. Connect the test leads in series with the circuit or power source.
4. In Manual Range mode, if "OL" is displayed, select a higher range.
5. Read the value from the LCD.

Note:

• Do not measure current higher than 10A (for 10A range) or 220mA (for µA/mA range) to avoid burning out the fuse or damaging the instrument.
• When measuring high current, limit each measurement to under 10 seconds, with intervals longer than 15 seconds.
• Disconnect test leads immediately after measurement.

5.4. Resistance Measurement

1. Turn the function/range selection knob to Ω.
2. Insert the red test lead into the VΩHz terminal and the black test lead into the COM terminal.
3. Connect the test leads in parallel to the tested resistance.
4. In Manual Range mode, if "OL" is displayed, select a higher range.
5. Read the value from the LCD.

Note:

• When measuring in-circuit resistance, ensure the circuit power is off and all capacitors are fully discharged.
• If the tested resistance is not connected or exceeds the range, "OL" will be displayed.
• For resistances greater than 1MΩ, the reading may take a few seconds to stabilize.
• Do not input voltage when measuring resistance.
• Disconnect test leads immediately after measurement.

5.5. Diode and Continuity Test

Diode Test:

1. Turn the function/range selection knob to Ω.
2. Insert the red test lead into the VΩHz terminal and the black test lead into the COM terminal.
3. Press the SELECT button to choose the diode measurement function.
4. Connect the RED test lead to the positive pole of the diode and the BLACK test lead to the negative pole.
5. Read the value from the LCD.

Note:

• If the diode is open circuit or connected with reverse polarity, "OL" will be displayed.
• When measuring in-circuit diodes, ensure the circuit power is off and all capacitors are fully discharged.
• Disconnect test leads immediately after measurement.

Continuity Test:

1. Turn the function/range selection knob to Ω.
2. Insert the test leads into the VΩHz and COM terminals.
3. Press the SELECT button to choose the continuity test function.
4. Connect the test leads to the circuit under test.
5. If the resistance is less than (30±10)Ω, the buzzer will sound.

Note:

• If the circuit is open, "OL" will be displayed.
• When testing continuity, ensure the circuit power is off and all capacitors are fully discharged.
• Disconnect test leads immediately after measurement.

5.6. Capacitance Measurement

1. Turn the function/range selection knob to Capacitance Range.
2. Insert the red test lead into the VΩHz terminal and the black test lead into the COM terminal.
3. Connect the test leads in parallel to the tested capacitor.
4. For small capacitors, an excess base number may appear due to distributed capacitance. Press the REL button to measure the relative value.
5. In Manual Range mode, if "OL" is displayed, select a higher range.
6. Read the value from the LCD.

Note:

• When measuring in-circuit capacitance, ensure the circuit power is off and all capacitors are fully discharged.
• Measuring large capacitance (e.g., 220mF) may take up to 30 seconds.
• Disconnect test leads immediately after measurement.

5.7. Frequency / Duty Cycle Measurement

1. Turn the function/range selection knob to Hz Range.
2. Insert the red test lead into the VΩHz terminal and the black test lead into the COM terminal.
3. Connect the test leads in parallel to the tested signal source.
4. To switch between Frequency and Duty Cycle, press the Hz/DUTY button.
5. When measuring current or voltage, press the Hz/DUTY button to enter Frequency mode, then again for Duty Cycle mode, and a third time to return to current/voltage mode.

Note:

• Input sensitivity: 1.5V RMS.
• Overload protection: 250V DC/AC peak value.
• When measuring high voltage frequency, select the ACV Range first, then press "Hz/duty".
• Do not input signals greater than 60V to avoid damage.
• Disconnect test leads immediately after measurement.

5.8. Temperature Measurement

1. Turn the function/range selection knob to Temperature Range (°C or °F).
2. Insert the temperature sensor (K-type thermocouple) into the µA/mA and COM input terminals.
3. Connect the sensor to the surface or object to be measured.
4. Read the value from the LCD.

Note:

• Without signal input, the LCD will display the instrument's internal temperature.
• Do not input any other signal to the temperature terminals to avoid damage.

5.9. USB Communication

1. Open the USB cover on the multimeter.
2. Connect the multimeter to your computer using the USB cable.
3. Install the provided PC software.
4. Open the PC software and set the COM terminal.
5. Long press the BL/USB key on the multimeter to activate the communication function (USB symbol appears on LCD).
6. The multimeter can now transmit data to the PC software for recording, analysis, processing, and printing.
7. To close communication, long press the BL/USB key again.

6. Technical Specifications

6.1. General Specifications

• Display: Dual display of digital and analog bars (46 segments for 86B/86C/86D, 46 segments for 86E).
• Max Display: 22000 (4 1/2) digits with automatic polarity and unit display.
• Measuring Method: Dual-integral A/D converter.
• Sampling Rate: 2 times/second (3 times/second for 86B/86C).
• Over Range Indication: "OL"
• Low Battery Indication: Battery symbol appears when voltage is approx. 4.1V.
• USB Serial Data Transmission: Yes.
• Auto Power Off: After about 15 minutes of inactivity (can be cancelled by pressing SELECT during power-on).
• Operating Environment: 0 - 40 °C, relative humidity < 80%.
• Storage Environment: -10 - 50 °C, relative humidity < 80%.
• Power: 4 x 1.5V AAA batteries.
• Dimensions: 189mm x 88mm x 56mm.
• Weight: Approx. 435g (including batteries).
• Product Color: Black+Orange
• Certification: CE, RoHS
• DIY Supplies: Electrical
• Usage: Household, industry, outdoor, indoor
• Standard Accessories: Test leads, Manual, TP01 temperature probe, USB cable, Software CD.

6.2. Electrical Specifications (Accuracy at 23 ± 5°C, relative humidity < 75%)

Note: The table above combines information from the OCR text and the technical parameter image. Specific ranges and accuracies may vary slightly between models (86B, 86C, 86D, 86E).

7. Maintenance

This is a high-precision instrument. Do not attempt to modify its internal circuit.

• Cleaning: Clean the instrument surface with a damp cloth and gentle detergent. Do not use strong solvents, abrasive cleaners, or alcohol.
• Repair: If any abnormalities are found, stop using the instrument immediately and send it for repair. Calibration or repair should only be performed by qualified professional maintenance personnel or designated service centers.
• Battery Replacement: The instrument uses 4 x 1.5V AAA batteries. When the low battery symbol (🔋) appears on the LCD, replace the batteries immediately to ensure accurate measurements.
• Fuse Replacement:
  • Input fuse "FS1": 5 x 20mm, 200mA, 250V
  • 10A input fuse "FS2": 5 x 20mm, 10A, 250V
  Only replace with fuses of the same type and electrical specification. Ensure test leads are disconnected from any tested points before replacing fuses.

8. Troubleshooting

If the instrument does not function properly, try the following tips. If problems persist, contact the maintenance center or distributor.

9. User Tips

• REL Measurement: The Victor 86E model supports REL (Relative Value) measurement, which is useful for zeroing out lead resistance or comparing measurements against a reference.
• Battery Type: The multimeter uses 4x 1.5V AAA batteries. Ensure you have spares for continuous operation.
• USB Port: The USB port is located at the rear and connects to a PC for data transfer. Some versions may use a removable IR LED for this connection.
• Capacitor Range: The maximum capacitance range is 220mF. For accurate readings, especially with large capacitors, ensure they are fully discharged before testing.

10. Warranty & Support

RuoShui (Victor) instruments are 100% genuine original products. All products sold under the VICTOR or RuoShui logo are supplied with a 1-year warranty (excluding item damaged and/or misused after receipt). Accessories come with a 3-month warranty.

Defective items must be reported and returned within the warranty period in their original packaging, if possible.

This instruction manual is subject to change without further notice. The content is considered correct, but if any errors or missing parts are found, please contact the manufacturer.

For further assistance or inquiries, please contact your distributor or the manufacturer's support team.

PDF User Manual: A detailed user manual in PDF format is available for download. Please refer to the official product page or contact support for the direct link: View User Manual (PDF)