(1) General Maintenance

Do not store or put the instrument under direct sunlight for a long time, especially the LCD display panel. Caution: Sprays, liquids or solvents are not allowed for the instrument or probe to avoid damage to the instrument or the probe.

(2) Cleaning

Check the instrument and probe frequently according to the operating conditions. Fellow the steps to clean the surfaces of the instrument.

Please use a soft cloth to wipe dust on the surface of the instrument and probe. When cleaning the LCD panel, be careful not to scratch the transparent protective film.

Power off the instrument first and wipe the instrument with a soft cloth.Use a mild detergent or water to clean if necessary.

Do not use any abrasive chemical cleaners as they may damage the instrument or the probe.

Warning: Make sure the instrument is completely dry before rebooting. Moisture may cause electrical short-circuit or even personal injury!

Correct settings but no waveform output

1) Check whether the BNC cable is properly connected to the channel output.

2) Check whether the key CH1 or CH2 is turned on.

3) Save the current settings of the instrument to a USB flash drive and "restore factory settings", then restart the instrument.

4) If the instrument still can't work normally, please contact your UNI-T dealer or local offices for support.

1) Check whether the USB flash drive device is working properly.

2) Make sure you are using Flash type USB flash drive device, this instrument does not support hard disk type USB flash drive device.

3) Restart the instrument and insert the USB flash drive again to see if it works properly.

4) If the USB flash drive still can not be recognized, please contact UNI-T dealer or local office and let us serve you.

If the generator still remains blank screen when power on.

1) Check whether the power supply is connected properly.

2) Check whether the power switch on the rear panel is set to "I".

3) Check whether the power switch on the front panel is connected .

4) Restart the instrument.

5) If the instrument still can't work normally, please contact your UNI-T dealer or local offices for support.

The UTL8500X series support ripple waveform measurement and waveform display functions, while the UTL8500 series does not have such functions.

The error message that pops up after the device has been used for a period of time may be due to missing or unregistered SN code information, so it is necessary to register the last 16-digit serial number of the machine.

Due to the voltage difference between the power supply output and the electronic load, abnormal output may occur when the electronic load voltage is higher than the source voltage. To ensure proper operation, the electronic load voltage should be set lower than the power supply’s output voltage. Taking line loss into account, the load voltage should be strictly less than the output voltage—it must not be equal to or greater than it.