ANENG AN9002 Digital Multimeter User Manual

LIMITED WARRANTY AND LIMITATION OF LIABILITY

Customers enjoy one-year warranty from the date of purchase.

This warranty does not cover fuses, disposable batteries, damage from misuse accident, neglect, alteration, contamination, or abnormal conditions of operation or handling, including failures caused by use outside of the product's specifications, or normal wear and tear of mechanical components.

Introduction

This product is a battery-powered, true-rms, auto-ranging digital multimeter with a 6000 counts LCD display and a backlight.

Safety Information

To avoid possible electrical shock, fire, or personal injury, please read all safety information before you use the product. Please use the product only as specified, or the protection supplied by the product can be compromised.

• Examine the case before you use the product. Look for cracks or missing plastic. Carefully look at the insulation around the terminals.
• The measurement must be made with correct input terminals and functions and within the allowable measuring range.
• Do not use the product around explosive gas, vapor, or in damp or wet environments.
• Keep fingers behind the finger guards on the probes.
• When the product has already been connected to the line being measured, do NOT touch the input terminal that is not in service.
• Disconnect the test leads from the circuit before changing the mode.
• When the voltage to be measured exceeds 36V DC or 25V AC, the operator shall be careful enough to avoid electric shock.
• Misuse of mode or range can lead to hazards, be cautious. "OL" will be shown on the display when the input is out of range.
• Low level of a battery will result in incorrect readings. Change the batteries when battery level is low. Do not make measurements when the battery door is not properly placed.

Instrument Overview

LCD Display

The LCD display shows various readings and indicators. Below is a description of the key elements:

Front Panel Description: The multimeter features a central rotary switch for selecting measurement functions, surrounded by several buttons: RANGE, RELA, MAX/MIN, Hz %, SEL/NCV, and HOLD/*. It also has input terminals labeled 10A, mA/µA, COM, and VΩHz+/°C°F. The display area is prominent, showing readings and indicators.

Function Buttons

Detailed descriptions of the function buttons:

1. HOLD/* Button: Push once to hold the current reading on the display; push again to continue normal operation. Push for more than 2 seconds to turn on the backlight; long-push again to turn off or the backlight automatically turns off after 2 minutes.
2. SELECT/NCV Button: Short press to toggle between AC/DC, Voltage(V,mV) / Current(A,mA,µA) / Resistance / Continuity / Diode /Capacitance or °C/°F. Keep pushing this button to enter the NCV testing mode.
3. RANGE Button: Push this button once to enter the manual range mode. In manual range mode, each push increases the range; when the highest range is reached, the next push will lead to the lowest range. To exit the manual range mode, turn the rotary switch.
4. RELA Button: Push this button to enter the relative mode. The product will store the present reading as a reference for subsequent readings. The display is zeroed, and the stored reading is subtracted from all subsequent readings. Push again to exit the relative mode.
5. MAX/MIN Button: Push to toggle between the MAX and the MIN mode. To exit MAX/MIN mode, push the button for more than 2 seconds.
6. Hz % Button: 1. Push this button when the rotary switch is at the position of [Frequency/Duty Cycle], the product will enter Frequency/Duty Cycle (only applies to low frequency with low voltage) measuring mode. 2. Press and hold the button for 2 seconds to turn on / off the Bluetooth function. After the APP is downloaded, you can connect to the phone.

Rotary Switch

The rotary switch is used to select measurement functions. The OFF position turns off the product.

• The product automatically powers off after 15 minutes of inactivity.
• The built-in beeper beeps 5 times 1 minute before auto power off.
• To restart the product from auto power off, press the SEL button or turn the rotary switch back to the OFF position and then to a needed position.
• To disable the Auto Power Off function, hold down the SEL button when turning on the product; you will hear five beeps if you have successfully disabled the function.

AUTO Position: Rotate the dial to AUTO position. Put probes correctly to recognize Voltage/Resistance/Continuity automatically. Only when the voltage is higher than 0.8V, this data will be shown on the display. Voltage/Resistance/Continuity can also be measured by switch dial to function position manually.

Input Terminals

Description of the input terminals:

Measurements Instruction

AUTO Mode

1. Auto mode can recognize Voltage/Resistance/Continuity automatically. Only when the voltage is higher than 0.8V, this data will be shown on the display.

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to AUTO position.
3. Touch the probes to the correct test points of the circuit to measure the voltage.
4. Read the measured voltage on the display.

Measure AC/DC Voltage

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Hz V or to HzmV.
3. Press SELECT to toggle between AC/DC.
4. Touch the probes to the correct test points of the circuit to measure the voltage.
5. Read the measured voltage on the display.

*The measured voltage should not exceed the rated maximum test value, otherwise it may damage the product and endanger personal safety.

*Do not touch high voltage circuit during measurements.

Measure AC/DC Current

1. Connect the black test lead to the COM Terminal and the red lead to the mA, µA, A Terminal (MAX.600mA) or the 10A Terminal(MAX.10A).
2. Turn the rotary switch to mA, µA, or A.
3. Press SELECT to toggle between AC/DC mode.
4. Cut off the circuit path to be measured. Then connect the test leads across the circuit and power supply.
5. Read the measured current on the display.

* The measured current should not exceed the rated maximum test value, otherwise it may damage the product and endanger personal safety.

* Use the 10A Terminal and the Mode to judge range and choose the right function position when measure an unknown current.

* It is strictly forbidden to input voltage in this measuring state.

Measure Resistance

1. Connect the black test lead to the COM Terminal and the test lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Ω, and the display will show "OL".
3. Touch the probes to the desired test points of the circuit to measure the resistance.
4. Read the measured resistance on the display.

* Disconnect circuit power and discharge all capacitors before you test resistance.

* Do not input voltage at this setting.

Test Continuity

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Ω, press SELECT to toggle to the Continuity Mode.
3. Touch the probes to the desired test points of the circuit.
4. The built-in beeper will beep when the resistance is lower than 50Ω, which indicates a short circuit.

*Do not input voltage at this setting.

Test Diodes

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Ω, press SELECT to toggle to the Diode Mode.
3. Connect the red probe to the anode side and the black probe to the cathode side of the diode being tested.
4. Read the forward bias voltage value on the display.
5. If the polarity of the test leads is reversed with diode polarity or the diode is broken, the display reading shows "OL".

*Do not input voltage at this setting.

*Disconnect circuit power and discharge all capacitors before you test diode.

Measure Capacitance

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Ω, press SELECT to toggle to the Capacitance Mode.
3. Connect the red probe to the anode side and the black probe to the cathode side of the capacitor being tested.
4. Read the measured capacitance value on the display once the reading is stabilized.

* Disconnect circuit power and discharge all capacitors before you test capacitance.

Measure Frequency

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Hz V, press SELECT to switch to AC Voltage and press Hz % to toggle to the Frequency Mode (Voltage≥10V, 1~100KHz); or turn the rotary switch to HzmV press SELECT to switch to AC Voltage and press Hz % to toggle to the Frequency Mode (Voltage ≤10V, 1~10MHz); or turn the rotary switch to Hz press SELECT to switch to AC Voltage and press Hz % to toggle to the Frequency Mode(Voltage≤10V,1~10MHz).
3. Touch the probes to the desired test points.
4. Read the measured frequency value on the display.

Measure Duty Cycle

1. Connect the black test lead to the COM Terminal and the red lead to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to Hz V or HzmV and press Hz % to toggle to the Duty Cycle Mode; or turn the rotary switch to Hz press Hz % to toggle to the Duty Cycle Mode.
3. Touch the probes to the desired test points.
4. Read the measured duty cycle value on the display.

Measure Temperature

1. Connect the black thermocouple probe to the COM Terminal and the red probe to the VΩHz+/°C°F Terminal.
2. Turn the rotary switch to °C/°F, press SELECT twice to toggle to the Temperature Mode and the display will show the room temperature, to toggle between °C/°F, press SELECT button.
3. Touch the probes to the desired test points.
4. Read the measured temperature on the display.

*Do not input voltage at this setting.

Maintenance

Beyond replacing batteries and fuses, do not attempt to repair or service the product unless you are qualified to do so and have the relevant calibration, performance test, and service instructions.

Clean the Product

Wipe the product with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect readings.

*Remove the input signals before you clean the product.

Replace the Batteries

When "?" is shown on the display, batteries shall be replaced as below:

1. Remove the test leads and turn off the product before replacing the batteries.
2. Loosen the screw on the battery door and remove the battery door.
3. Replace the used batteries with new batteries of the same type.
4. Place the battery door back and fasten the screw.

Replace the Fuses

When a fuse is blown or do not work properly, it shall be replaced as below:

1. Remove the test leads and turn off the product before replacing the fuse.
2. Loosen the four screws on the back cover and the screw on the battery door, then remove the battery door and the back cover.
3. Replace the fuse with a new fuse of the same type.
4. Place the back cover and the battery door back and fasten the screws.

Specifications

General Specifications

Mechanical Specifications

Environmental Specifications

Electrical Specifications