Q: Why does the 'AutoAPO' display remain visible at startup of the LEXMAN LX-M-2000 multimeter?

On the LEXMAN LX-M-2000 digital multimeter, the AutoAPO display means Auto Power Off . This is a completely normal energy-saving safety feature that appears when the device is turned on to indicate that the automatic shutdown is activated. This feature automatically turns off the multimeter after a period of inactivity (usually 15 to 30 minutes depending on the model) to save battery. Therefore, the 'AutoAPO' display at startup does not indicate a malfunction, but simply that the device is ready to enter automatic shutdown mode if no measurements are taken during this time. The multimeter remains fully functional with this display. If you take a measurement, the device will stay on as inactivity then resets the timer. You can verify that the device is working correctly by measuring a known voltage or current. If the AutoAPO display disappears quickly during use or if you notice abnormal behavior (premature shutdown, low battery), check the battery status. According to the manufacturer's recommendations, you should replace the battery when the low battery symbol (downward arrow) appears on the screen. The multimeter uses two AAA 1.5 V batteries.

Question 1

What is the number of counts of the LEXMAN LX-M-2000 digital multimeter?

Accepted Answer

The LEXMAN LX-M-2000 digital multimeter has a display resolution of 6,000 counts (also known as display points). This means that the LCD screen can distinguish and display 6,000 different measurement levels, making it an entry-level multimeter capable of providing accurate readings without overwhelming the user with too many decimals.

This resolution of 6,000 counts allows the LX-M-2000 to effectively measure most common electrical quantities with good accuracy. For example, in the 6 V DC range, the device can distinguish variations on the order of 1 mV, and in the 600 Ω resistance range, it can detect variations of 0.1 Ω. The higher the number of counts, the more the display can distinguish small variations in the measured quantity.

The display combines several technologies: the True RMS (root mean square) system provides accurate measurements in alternating current, while the fast ADC converter ensures a refresh rate of 3 times per second, allowing for slow variations to be tracked for stable measurements in electronics and electrical maintenance.

The measurement ranges suitable for this number of counts include: in DC voltage (600 mV / 6 V / 60 V / 600 V), in resistance (600 Ω to 60 MΩ), in current up to 10 A, and even capacitance up to 10 µF. When a measurement exceeds the selected range, the display indicates OL (Overload) with an alert sound signal.

This resolution is well suited for electrical diagnostics, maintenance work, or testing electrical equipment in a professional environment. It is not designed for very high precision applications requiring more than 20,000 counts, but it offers an excellent compromise between ease of reading and sufficient accuracy for everyday needs.

Question 2

How to reset the LEXMAN 2 indoor surveillance camera to factory settings?

Accepted Answer

To reset your LEXMAN 2 indoor surveillance camera to factory settings, follow these simple steps:

Locate the reset button: It is usually found at the back or underneath the camera, often in a small hole marked "Reset".
Prepare a sharp object: Use a straightened paperclip, a pin, or a similar small tool to reach the button.
Press and hold the button: Press the reset button for about 10 to 15 seconds. You should see the indicator lights flashing, indicating that the reset is in progress.
Release the button: Once the lights are flashing, release the button. The camera will automatically restart and return to its factory settings.

After this operation, the camera will be like new, and you will need to reconfigure it, including connecting to the Wi-Fi network and custom settings.

Question 3

How to solve a Wi-Fi connection problem with the LEXMAN 2 surveillance camera when the box password does not work?

Accepted Answer

If you are having trouble connecting your LEXMAN 2 surveillance camera to your Wi-Fi network despite entering the password for your box, here are several steps to follow to resolve this issue:

1. Check the Wi-Fi password

Make sure the password is entered correctly, respecting uppercase, lowercase, and special characters.
Try entering the password on another device to verify its validity.

2. Proximity and signal quality

Place the camera close to the router during setup to avoid a weak or unstable connection.
Check that the Wi-Fi network is functioning properly with other devices.

3. Wi-Fi network compatibility

The LEXMAN 2 camera is generally compatible with 2.4 GHz Wi-Fi networks. Ensure that you are trying to connect it to a 2.4 GHz network and not a 5 GHz one.
Check that the router's security mode is compatible, ideally WPA2. Some modes like WEP may not be supported.

4. Restarting and resetting

Restart the camera to reset the connection.
If the problem persists, perform a factory reset according to the specific procedure for your model, then start the setup again.

By following these tips, you should be able to connect your LEXMAN 2 camera to your Wi-Fi network. If the problem continues, it may be helpful to check the advanced settings of your router or contact technical support.

Question 4

What is the reference for the 600 mA fuse for the LEXMAN LX-M-2000 digital multimeter?

Accepted Answer

The LEXMAN LX-M-2000 digital multimeter uses a 600 mA protection fuse referenced F 600mA H 600V in the D 6x32 mm format (or 6x32 mm). This reference corresponds to the F1 fuse of the multimeter, intended for the main input socket.

The precise characteristics of the fuse to be used are:

Rated value: 600 mA (0.6 A)
Characteristic: H (high voltage fuse)
Rated voltage: 600 V
Dimensions: D 6x32 mm (diameter 6 mm, length 32 mm)

If your multimeter is equipped with a 10 A socket, it uses a different fuse (F2: F 10A H 600V in the 6x25 mm format).

To replace the 600 mA fuse, you must first turn off the device by setting the dial to the OFF position. Then loosen the two screws of the back cover and remove the cover to access the fuse. This operation must be performed by a professional for safety reasons. Never use a fuse of a different value or dimensions, as this could damage the device or create an electrical hazard.

Question 5

How to measure a voltage of 220 V with the LEXMAN LX-M-2000 digital multimeter?

Accepted Answer

To measure a voltage of 220 V with the LEXMAN LX-M-2000 digital multimeter, follow these simple steps:

Preparation: Plug the black probe into the COM (common) socket and the red probe into the socket marked V A mA. The multimeter operates in auto range and will automatically recognize the value to be measured. Check that the AAA batteries are in good condition.

Mode selection: Turn the selector to the ACV (alternating current voltage) position. This position is essential as 220 V is an alternating mains voltage. The LX-M-2000 supports up to 600 Vrms, so your measurement of 220 V will be performed without issue.

Measurement: Place the black probe on the reference point (usually neutral) and the red probe on the phase conductor. Keep the probes firmly in contact with the measurement points. The high-resolution LCD display (6,000 counts) shows the voltage accurately. The multimeter has a frequency response of 40 Hz to 400 Hz, perfect for the 50/60 Hz mains.

Reading the result: The value is displayed in volts and refreshes 3 times per second. You should get a reading close to 220 Vms. The device has an input impedance of about 10 MΩ, allowing for very accurate measurement. If you first test a known voltage, you will verify that the multimeter is functioning correctly.

Safety: Never exceed 600 Vrms on this device. Avoid touching the metallic parts of the probes during measurement. Do not change the selector during measurement. After use, remove the probes and turn off the device to save the batteries. If you are not experienced in electricity, consult a qualified professional.

Question 6

Why does my LEXMAN LX-M-2000 digital multimeter display 0.22 V when measuring the voltage of a wall electrical outlet?

Accepted Answer

A reading of 0.22 V on a wall outlet is abnormal: a power outlet typically delivers 230 V AC (or 110-120 V depending on your region). This very low reading indicates a problem with the configuration of your LEXMAN LX-M-2000 multimeter or the measurement itself.

First, check the multimeter selector: The dial must be set to ACV (alternating current voltage) to measure a power outlet. The ACV symbol represents an alternating current voltage. If you have selected the DCV mode (direct current) or any other mode, the reading will be incorrect. Turn the dial to the ACV position.

Next, check the connection of the leads: Insert the red lead into the VΩmA terminal and the black lead into the COM terminal. This configuration is mandatory for measuring voltages. Then place the red lead on the phase (top hole of the outlet) and the black lead on the neutral or ground (bottom hole). If the leads do not make good contact with the outlet or are poorly inserted, the reading will show a very low value.

Test another outlet to confirm: Try measuring the voltage on another wall outlet in your home with the correct setting (ACV and properly connected probes). If this second outlet shows around 230 V, it confirms that the first outlet is not powered or is faulty.

If all outlets in your home display very low voltages even in ACV position with the leads correctly connected, this may indicate a problem with the multimeter itself. Check that the batteries (2 x AAA 1.5 V) are in good condition and properly installed. If the multimeter continues to display abnormal values, test it on a known voltage source (like another outlet you are sure is working) or consult customer service.

The LEXMAN LX-M-2000 is designed to measure voltages up to 600 V RMS in ACV mode, with a response range of 40 Hz to 400 Hz for household applications. A normal power voltage always generates a reading close to 230 V (50 Hz) in continental European countries.

Question 7

Why does the 'AutoAPO' display remain visible at startup of the LEXMAN LX-M-2000 multimeter?

Accepted Answer

On the LEXMAN LX-M-2000 digital multimeter, the AutoAPO display means Auto Power Off. This is a completely normal energy-saving safety feature that appears when the device is turned on to indicate that the automatic shutdown is activated.

This feature automatically turns off the multimeter after a period of inactivity (usually 15 to 30 minutes depending on the model) to save battery. Therefore, the 'AutoAPO' display at startup does not indicate a malfunction, but simply that the device is ready to enter automatic shutdown mode if no measurements are taken during this time.

The multimeter remains fully functional with this display. If you take a measurement, the device will stay on as inactivity then resets the timer. You can verify that the device is working correctly by measuring a known voltage or current.

If the AutoAPO display disappears quickly during use or if you notice abnormal behavior (premature shutdown, low battery), check the battery status. According to the manufacturer's recommendations, you should replace the battery when the low battery symbol (downward arrow) appears on the screen. The multimeter uses two AAA 1.5 V batteries.

Question 8

How to unclip the battery compartment cover of the LEXMAN LX-M-2000 multimeter?

Accepted Answer

To access the battery compartment of the LEXMAN LX-M-2000 digital multimeter, follow these steps:

Remove the cover: Start by removing the casing or cover located on the underside of the device.
Locate the cover screw: Identify the single screw that holds the battery compartment cover in place.
Loosen the screw: Using a small suitable screwdriver, loosen this screw by turning it counterclockwise until it is completely free.
Remove the cover: Once the screw is loosened, gently remove the cover to access the AAA 1.5 V batteries.
Check the poles: Before replacing the batteries, make sure to correctly identify the positive and negative poles to avoid any malfunction.

After replacing the batteries, tighten the screw securely to properly close the compartment and reposition the cover.

Question 9

Where is the battery compartment of the LEXMAN LX-M-2000 digital multimeter?

Accepted Answer

The battery compartment of the LEXMAN LX-M-2000 digital multimeter is located at the back of the device. To access it, follow these steps:

Turn the multimeter over by placing it on a flat surface with the screen facing down.
Locate a rectangular or square cover, usually secured by one or more screws or clips.
Remove the cover by unscrewing the screws or gently unclipping the panel to access the battery compartment.
Replace the batteries if necessary, then put the cover back in place.

This compartment is often identified by a battery symbol or a label indicating the battery. Handle the cover carefully to avoid damaging the device.

Question 10

Can the indoor screen of the LEXMAN SOLAR PANEL WIRELESS VIDEOPHONE operate independently without being connected to the electrical network?

Accepted Answer

No, the indoor screen (the monitor) of the LEXMAN SOLAR PANEL WIRELESS VIDEOPHONE cannot operate independently without electrical power. Unlike the outdoor unit, which has a rechargeable battery and a solar panel, the indoor screen must be connected to the electrical network to function.

Monitor operation: The indoor screen operates exclusively from mains power and requires a power cable to be connected. It does not have a built-in battery or the ability to operate on backup battery. The manual clearly states that if the monitor does not turn on, the first check to make is to ensure that the power supply is properly connected and powered on.

Energy saving: Although the monitor does not operate without being plugged in, it has an automatic standby function. After 20 seconds of inactivity when the device is plugged in but inactive, it enters standby mode. This function reduces power consumption to a maximum of 0.5 W, allowing for energy savings while keeping the device ready for use.

Battery autonomy: Only the outdoor unit (the external unit with camera) has a rechargeable lithium-ion battery associated with a solar panel. This battery can operate independently, but the indoor screen is entirely dependent on mains power. For optimal use, the monitor should remain continuously plugged in.

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