Victor 9808+ Digital Multimeter Instruction Manual

1. Introduction

The Victor 9808+ is a stable and high-performance digital multimeter powered by batteries. It features an LCD with a 20mm-high display for clear readings and convenient operation. This instrument utilizes a dual-integral A/D converter and offers a wide range of functions including DCV, ACV, DCA, ACA, resistance, capacitance, frequency, inductance, diode, triode, continuity testing, temperature measurement, electromagnetic induction, and live wire judgment. It also includes features such as power on/off, backlight, and a torch, making it an excellent tool for various electrical measurements.

Safety Notes

• Input of limit values beyond the specified range is prohibited.
• Voltages less than 36V are considered safety voltages. When measuring voltages higher than DC 36V or AC 25V, always check the connection and insulation of test leads to prevent electric shock.
• Ensure test leads are disconnected from the testing point when changing functions or ranges.
• Select the correct function and range to avoid incorrect operation.
• Do not use the meter for testing if the battery is not installed or the back cover is not tightened.
• When measuring resistance, capacitance, inductance, diode, or performing on-off tests, do not input voltage signals.
• Before replacing the battery or fuse, remove test leads from the test point and turn off the power switch.
• Always comply with local and national safety regulations. Wear personal protective equipment (approved rubber gloves, masks, and flame retardant clothing) to prevent electric shock and arc injury.
• Use only the correct measurement standard class (CAT), voltage, and current rated probe, test conductor, and adapter.
• The symbol "A" indicates high voltage. The symbol "GND" refers to ground. The symbol "A" indicates that the manual must be consulted. The battery symbol "" indicates low battery.

2. Package Contents

Upon opening the box, verify the presence of the following items. If any items are missing or damaged, please contact your supplier.

• Multimeter: 1 pc
• Color box: 1 pc
• Test pen: 1 pc
• Product manual: 1 pc
• Certificate of conformity: 1 pc
• Temperature probe: 1 pc
• K-type probe (-20℃~250℃): 1 pc
• 1.5V AAA Battery: 4 pcs
• Instruction Manual: 1 pc
• Test leads: 1 pair
• Crocodile clip: 1 pair
• Cloth bag: 1 pc

3. Parts and Controls

1. LCD display screen
2. Data retention/backlight
3. Power button/Function switching
4. Range knob
5. 20A current socket
6. µA/mA current socket
7. Alarm indicator light
8. Max/min
9. Relative value/flashlight lighting
10. Triode Jack
11. Voltage/resistance/capacitance jack
12. Public Jack (COM)
13. Flashlight
14. Pen slot
15. Battery compartment/bracket

4. Specifications

Accuracy: ± (a% x reading + digit), at (23±5)°C, relative humidity <75%. One year guarantee since production date.

Performance (Note: "A" indicates that the meter has this range; "*" means the meter does not have this range.)

General Characteristics

Measurement Ranges and Accuracy

DC Voltage

AC Voltage TRUE RMS Measurement

Accurate measurement range: 10%-100% of the range; Frequency response: 40Hz-1KHz. For signals below 50Hz, the measurement accuracy increases by 2% on the original basis. Measurement mode (sine wave): True RMS. Crest factor: CF≤3, adding an additional error of 1% to the reading at CF≥2. When the test voltage value is greater than 20% of the range, the accompanying frequency can be displayed.

DC Current (DCA)

20A (test within 10 seconds); Recovery time is 15 minutes.

AC Current (ACA)

Frequency response: 40Hz-1000Hz; Measurement mode (sine wave): true RMS; Crest factor: CF≈3, adding an additional error of 1% to the reading at CF≥2. 20A (test within 10 seconds); Recovery time is 15 minutes. When the test current value is greater than 40% of the range, the accompanying frequency can be displayed.

Resistance (Ω)

Overload protection 250VDC/AC RMS. The measured error doesn't include lead resistance.

Capacitance (C)

Accurate measurement range: 10%-100%. Large capacitance response time: 1mF About 8s. The measured error doesn't include lead capacitance. Unit: 1mF=1000uF, 1uF=1000nF, 1nF=1000pF.

Frequency (Hz)

Note: For signals below 3Hz, the reading is zero. Input sensitivity: 3.0V. Duty cycle display: (0.1%-99.9%). Frequency input amplitude requirement: 10Hz-10MHz: 3Vrms < input amplitude < 10Vrms. 10MHz-20MHz: 11Vrms < input amplitude < 20Vrms. Duty cycle: 10%-90% range, suitable for square waves of 10Hz-1kHz; 30%-70% range, suitable for square waves of 1kHz to 10kHz. This frequency range is an automatic range test, which can be measured from 10Hz to 20MHz. Instrument sub-display can synchronously display duty cycle.

Temperature (°C/°F)

Sensor: K type thermocouple (Ni-Cr-Ni-Si) banana plug.

Inductance (L)

Accuracy measurement range: 5%-100% of the range. Do not input voltage at this range.

Transistor hFE Data Test

5. Operating Modes

Before operation, ensure the battery level is sufficient. If the battery level is at 30%, replace it. Always place the knob in the required position for measurement. Pay attention to the "A" symbol next to the test leads socket, which warns not to exceed the indicated voltage and current.

5.1. Key Functions Overview

• POWER SELECT: Short press to turn on, long press to turn off. In AC/DC voltage and current ranges, short press to switch between AC/DC. In diode/on/off mode, short press to switch between diode and on/off tests. In electromagnetic induction/live wire detection mode, short press to switch between these tests.
• Data Hold (HOLD B/L): Short press to hold the current measured value on the LCD. Press again to exit. Long press for more than 2 seconds to turn on/off the backlight. Warning: Do not use HOLD to measure unknown potential to avoid electric shock and fire.
• Maximum/Minimum Value Measurement (MAX/MIN): Available in voltage/current/resistance/temperature/on/off/diode range. Short press to enter MAX/MIN mode. "MAX" or "MIN" will appear on the LCD. Long press for more than 2 seconds to exit.
• Relative Value Measurement/Torch (REL/): Available in voltage/current/resistance/capacitance/temperature/inductance range. Short press "REL" to enter relative value measurement mode. Long press "REL/" for more than 2 seconds to turn on/off the flashlight.
• Automatic Power Off (APO): The meter automatically shuts down after 15 minutes of inactivity. To cancel, press and hold "POWER" and "REL/" simultaneously when turning on the device. The "APO" symbol will disappear.

5.2. AC/DC Voltage Measurement

1. Turn the knob to the voltage gear. Short press the POWER SELECT key to switch between AC and DC voltage tests. If the voltage is unknown, start with a larger range and gradually reduce.
2. Insert the red test lead into the "VΩHz" jack and the black test lead into the "COM" jack.
3. Connect the test leads to the testing point. The screen will display the measured voltage value. For DCV, the voltage and polarity of the red test lead connection will be shown. For AC voltage, the secondary display area shows the accompanying frequency.

Note: If "OL" is displayed, the value is beyond the current range. Select a higher range. When measuring high voltage (above 36V), wear personal protective equipment. Input voltage must not exceed DC1000V or AC750V. Disconnect test leads and circuit after measurement.

5.3. AC/DC Current Measurement

1. Turn the knob to the current gear. Short press the SELECT key to switch between AC and DC current tests.
2. Insert the red test lead into the "µA/mA" jack (Max. 200mA) or "20A" jack (Max. 20A), and the black test lead into the "COM" jack.
3. Connect the test leads in series with the power supply or circuit under test. The measured current value and polarity will be displayed.

Note: Turn off circuit power before connecting. If the range is uncertain, start with the max range. Max input current is 200mA or 20A; larger currents will blow the fuses. Test for less than 10 seconds when testing 20A current. When measuring large current (above 10A), wear personal protective equipment. Do not input more than DC 36V or AC 25V to the current jack and "COM" jack.

5.4. Resistance Measurement

1. Set the knob to a proper resistance range.
2. Input the red test lead to "Ω" terminal and the black one to "COM" terminal.
3. Connect the test leads across the resistance to be tested.

Note: "OL" indicates an open circuit or over range. Adjust the knob to a proper range. For values over 1MΩ, readings may take a few seconds to stabilize. For low resistance, short-circuit probes and press "REL" to measure relative value. When measuring online resistance, ensure power is off and capacitors are discharged. Do not input any voltage at resistance range.

5.5. Capacitance Measurement

1. Switch to a proper capacitance range.
2. Input the red test lead to "F" terminal and the black test lead to "COM" terminal.
3. Connect the test leads to the two sides of the tested capacitor (red test lead is "+").

Note: "OL" indicates over range. For capacitance below 20nF, residual reading may appear due to distributed capacitance; use "REL" key for relative value measurement. For serious leakage or breakdown, values may be unstable. For large capacitance, readings may take a few seconds to stabilize. Discharge the capacitor sufficiently before testing.

5.6. Transistor hFE Measurement

1. Set the knob to "hFE" range.
2. Verify the transistor type (NPN or PNP) and insert the emitter, base, and collector into the proper jack.

5.7. Diode and Continuity Test

1. Input the black test lead to "COM" terminal and the red one to "" terminal (red lead is "+").
2. Turn the knob to "" range. It defaults to on/off range. Press SELECT to convert to diode testing. If the buzzer sounds and the continuity alarm light is on, resistance is less than (50 ± 20) Ω.
3. For diode range, connect test leads to the diode. Readings of 500mV to 800mV are normal for silicon PN junctions. "OL" indicates an open circuit or incorrect polarity.

Note: Do not input voltage at this "" function.

5.8. Frequency Measurement

1. Set the knob to frequency range.
2. Input the red test lead to "Hz" terminal and the black test lead to "COM" terminal.
3. Connect test leads or a shielded cable to the signal source or load.

Note: Frequency input amplitude requirements: 10Hz-10MHz: 3Vrms < input amplitude < 10Vrms. 10MHz-20MHz: 11Vrms < input amplitude < 20Vrms. Strictly follow amplitude requirements. Using a shielded cable is better for small signals in noisy environments. Do not input voltage exceeding 36V DC or AC peak. This range is automatic (10Hz to 20MHz). Sub-display shows duty cycle.

5.9. Inductance Measurement

1. Input the black test lead to "COM" terminal and the red test lead to "mA" terminal.
2. Turn the knob to the corresponding inductance range, then connect the test leads to the inductance to be tested.

Note: "OL" indicates the measured inductance exceeds the range. For 2mH or 20mH range, short circuit test leads and press "REL" for relative value measurement. Do not input voltage at this range.

5.10. Temperature Measurement

1. Insert the negative pole of the thermocouple sensor into the "COM" socket and the positive pole into the "℃/℉" socket.
2. Place the thermocouple working end (measuring temperature end) above or inside the object to be measured. The temperature value will be displayed directly in Celsius.

5.11. Non-Contact Voltage (NCV) / Live Wire Recognition

1. Turn the knob to the "NCV/Live" position (defaults to NCV function).
2. For NCV, place the upper part of the instrument close to the tested live AC power line. When AC voltage is sensed, the red indicator light will flash and the buzzer will sound. The closer to the AC power line, the stronger the induced AC voltage and faster the flashing/buzzing.
3. For Live wire recognition, input the red test lead to "VΩHz" terminal. Short press SELECT to switch to Live function. Use the red test lead to contact the tested position or socket. An audible and visual alarm indicates a live wire. No change indicates a zero wire or no power.

6. Maintenance

6.1. General Care

• Do not attempt to modify the electric circuit.
• Keep the meter away from water, dust, and shock.
• Do not store or operate the meter under conditions of high temperature, high humidity, combustible, explosive, or strong magnetic fields.
• Wipe the case with a damp cloth and detergent; do not use abrasives or alcohol.
• If the meter will not be used for a long time, remove the batteries to avoid leakage.

6.2. Replacing Battery or Fuse

1. Remove the test leads from the circuit under test and from the input jacks. Long press the POWER button to turn off the meter.
2. Remove the screws on the battery door with a screwdriver and remove the battery door and bracket.
3. Remove the old battery or blown fuse and replace it with a new 1.5V battery or new fuse.
4. Cover the battery door and install the screws.
5. Battery specification: Four 1.5V AAA batteries.
6. Fuse Specification: mA input fuse "FS1": 5x20mm 200mA 250V. 20A input fuse "FS2": 5x20mm 20A 250V.

Note: When the battery symbol "" is displayed, the battery level is 30%. Replace the battery immediately to maintain measurement accuracy.

7. Troubleshooting

If your meter is not working properly, the following methods can help you quickly solve the problem. If the fault persists, please contact the repair center or dealer.

8. User Tips

• The multimeter requires 4 AAA batteries for operation.
• For precise maintenance work, consider using needle-type test leads.
• When measuring inductance in the 0-2mH or 0-20mH ranges, a 100uH base error may occur. To correct this, short-circuit the probes and press the 'REL' button to zero out the reading for each measurement.
• Capacitance measurements in the 100mF range may have lower resolution (only one decimal place) and can take several seconds to complete (e.g., 2,200uF in 3 seconds, 10,000uF in 5 seconds).
• The continuity buzzer has a hold time of approximately 1 second, which might be longer than desired for rapid short-circuit detection.
• Be aware that the multimeter may shut down if the input voltage exceeds 2V RMS when measuring frequencies.

9. Warranty and Support

This manual is subject to change without notice. The contents are considered correct. If you find any errors or omissions, please contact the manufacturer for assistance.

The company does not bear responsibility for accidents or harm caused by incorrect user operation. The functions described in this manual are not intended as a reason to use the product for a special purpose.

For further support or warranty claims, please refer to the contact information provided at the point of purchase or visit the official RuoShui website.

Product Video