If your Bietrun Wireless Microphone is not playing any sound you need to make sure you're using the correct adapter to plug it into your computer. You also need to make sure that the transmitter and receiver are synchronized and that you aren't getting interference on the frequency your transmitter it set to. Follow this guide for help with any of these issues.  There are specific instructions for Dell Latitude 3410 laptops at the bottom. Also included here is a copy of the user manual.

Download User Manual

 

Choosing the correct adapter

• If you're using an older desktop computer, in most cases the blue 1/4" to 3.5mm adapter that came with the wireless mic will be the one to use. Newer desktops may have a dedicated headset jack in which case use the black phone adapter.
• If you're using the blue line-in jack on the back of the desktop then use the blue adapter
• If you're using a laptop computer try the 1/4" to 3.5mm black phone adapter. 
• Plug the appropriate adapter into the microphone jack or line in port on your system. If you're still unable to hear yourself continue with steps in the next section.

To Resync Wireless Transmitter and Receiver

If you're using the correct adapter and still have trouble you may need to resync the transmitter and receiver. The translated instruction sheet that came with the microphone has this information, but the wording can be a little confusing. Follow these steps

• Make sure both units are charged and turned off
• Turn on the transmitter
• Simultaneously press the Power, Volume up and Volume Down buttons on the transmitter until the  display starts blinking.

• Turn on the receiver
• The RF/AF light on the receiver will blink repeatedly and then go dark.
• Turn off the transmitter and then turn it back on
• You should now be synced and the RF/AF light on the receiver will be lighted blue while the transmitter is powered on. It will also flash green when you speak into the microphone.

Make sure Zoom is using the correct microphone

In your zoom settings, go to the audio section and make sure you have chosen the input that the wireless mic is connected to. It may be that you still have your webcam mic selected. Below is an example of what a typical desktop computer would be set to. Your system may be different. You can try all the options listed in the dropdown menu to see if one of them works.

Change Frequency to Eliminate Interference

If someone else too near you is operating on the same frequency your unit may pickup some of their transmissions. in order to fix this you or they will need to change the transmitter frequency.

• Press both buttons on the front of the transmitter simultaneously to rotate through the available channel frequencies. Find one that isn't being used by someone near you.

Sound is too quiet

If the audio produced by the microphone isn't loud enough you can press the right arrow button to turn up the volume of the mic. The maximum setting is V20 (looks like U20)

Dell Latitude 3410

The Dell Latitude 3410 will use the black phone adapter. It also needs to have the Waves MaxxAudio Pro for Dell app installed if it doesn't already have it.

• Install the Waves MaxxAudio Pro app from the Microsoft Store - Install MaxxAudio Pro
• When you plug in the wireless receiver with the black phone adapter choose headset in the window that comes up.

• In zoom you may need to switch your mic to "Jack Mic". You may also need to change your speaker setting in order to hear sounds. It's usually going to be something like "Speakers (Realtek High Definition Audio)"